Geological Society. 165 



carapace is much more tumid, especially on the branchial and 

 gastric regions ; the surface of the anterior half of the carapace 

 is nearly smooth, and that of the posterior half finely granu- 

 lated. The rostrum is short and very obtusely tricuspidate ; the 

 orbits shallow and rounded ; the hepatic margin bluntly toothed, 

 with a stronger tooth at the epibranchial angles ; the divisions of 

 the regions of the carapace faintly indicated ; and there is a slightly 

 roughened line on the sides of the gastric intumescence. The cha- 

 racters of the jaw- feet and of the chelae are described by the author ; 

 of the latter the right is considerably larger than the left hand. 

 The specimen was a female. For this species the author proposed 

 the name of Harpactocarcinus tumidus. 



Dr. Hector explained the sequence of formations in the locality 

 from which the above Crab was derived, and stated that the Ototara 

 series is the upper member of his Cretaceo-Tertiary formation, con- 

 taining some fossUs of decidedly Cretaceous type, such as Saurian 

 bones and fragmentary Inocerami, and other forms that are asso- 

 ciated with decidedly Mesozoic fossils in the underlying strata. 

 On the other hand, the occurrence of Tertiary forms such as Nautilus 

 ziczac (or a nearly allied form) connects it with the Eocene, while' 

 the gigantic Penguin {Palceeiidi/ptes antarcticus, Huxl.) and a Turtle 

 indicate a fauna not unlike that at present existing in adjoining areas. 



" On a remarkable fossil Orthopterous Insect from the Coal- 

 measures of Britain." By Henry Woodward, Esq., F.R.S., F.G.S. 



The author commenced by indicating the importance of the ex- 

 amination of the Clay-ironstone nodules of the Coal-measures, in 

 which so many valuable fossils have been discovered, including the 

 remarkable insect described in the present paper. The specimen 

 displays the characters of the four wings, only two of which, how- 

 ever, are nearly perfect ; and these measure 2| inches in length and 

 1 inch and I5 inch in breadth, the hind wing being the broadest. 

 The author described in detail the characters presented by the vena- 

 tion of the wings, which includes three straight veins running 

 parallel to the fore margin, the third bifurcating near the apex, a 

 fourth much curved vein giving origin to six branches, and having 

 at its base a triangular space, from which arise the other veins of 

 the wing. The body appears to have been about 5 lines broad be- 

 tween the bases of the wings. In front of the wings is the protho- 

 rax in the form of two large, rounded, dilated, and veined lobes ; 

 it measures 14 lines across and 6 lines in length. In front of these 

 lobes is the head with its eyes, produced in front into a slender pro- 

 cess 3 lines long. This insect is considered by the author to be most 

 nearly related to the Mantidae, the characters of the head and thorax 

 especially being to some extent paralleled in the existing genus 

 Blephai-is. The author proposed to name the species Lithomantis 

 carbonarius, and suggested that Gryllacris {Coiydcdis) Brongniarti 

 probably belongs to the same genus. 



