In this paper is given a revision of all but one of the corals in the Rev. W. B. Clarke's first collection of fossils from New South Wales; the collection was placed by him in the Woodwardian Museum at Cambridge in 1844, and was described by M'Coy (1847). The types are still preserved at the Sedgwick Museum, Cambridge. A description is also given of the holotype of Amplexus arundinaceus Lonsdale, which was collected from New South Wales by Strzelecki in 1842, and is now in the British Museum (Natural History), London. The species are distributed as follows: 1? Permian, 1 Lower Carboniferous, 1 Devonian, and 1 Silurian or Lower Devonian.

The structure of the Jurassic area of north-east Leicestershire has been discussed by several writers, and markedly different opinions have been held. In the present paper fresh informationabout the variation of the Jurassic beds is brought forward to show the true position and orientation of the fold axes active in Jurassic times, and the history of the fold is discussed in more detail than has previously been attempted.

The specific name of this form is not in doubt, but its authorship is less securely determined. The species Terebratula cuneata was proposed by both Dalman (1828, 141, Tab. vi, figs. 3a–c)and Hisinger (1828, 220, 239, Tab. vi, fig. 5) in the same year, and the first time each author mentions the name, he ascribes it to the other. Each account is accompanied by figures, and there appears to be no ruling of the International Commission on Nomenclature that would settle the authorship in such a case. Dalman's account, however, appears in the volume for 1827, though the title page bears the imprint 1828, and such a choice of authorship agrees with alphabetical priority and with the usage of most subsequent palaeontologists.

Evidence from Mull and Ardnamurchan is brought forward to show that the injection of cone-sheets is accompanied by a vertical lifting of the upper wall. This confirms Anderson's explanation. It is argued that the fracturing and injection are of a quite sudden character and that it is in the nature of the process that no evidence from recent volcanoes has yet been obtained of contemporary cone-sheet injection.

A Remarkable little fossil fish, Eucenturus paradoxus, was described by Traquair (1905) from a single specimen from the Calciferous Sandstone Series of Ardross, Fifeshire. Traquair's description is as follows: “This extraordinary little organism measures 2⅜ inches in length, of which ½ inch may be allotted to the head, and ¾ inch to the body, and 1⅛ inch to the tail. The head is a mass of calcareous matter, in which something suggestive of a broad curved mandible can be seen, but admits of no further description. The body, ⅜ inch broad in front, is composed of a greyish film, which, when examined by a strong lens, is seen to consist entirely of minute, slender, slightly-curved and sharp-pointed spinelets. The tail is tapering in form, consisting of amorphouslookingcalcareous matter, but on each side (assuming that the creature is crushed vertically) is a conspicuous row of double spinelets arranged exactly opposite each other. From a common base arise two spinelets, which are placed close together, and nearly parallel to each other; one of them, the anterior, being only half the length of the posterior one, which just behind the body may attain a length of 1/16 inch, though towards the end of the tail they become smaller; both spinelets are slender, slightly curved, round in transverse section, smooth externally, sharply pointed, and traversed internally by a central tubular pulp cavity. No trace either of internal skeleton, or of limbs, or of fins of any sort can be seen.”