10 Messi i'. ' STewlon a?icl G. C. Crick on some 



NerincBa, an d as having close affinities with N. des- 



voidyi from llian (Sequanian) rocks of France. It 



measures 12. length and consists of rather more than 



six whorls oi ^ A^idth than height, each one showing an 



oblique central depression which is parallel with a well- 

 marked suture. The general form is narrow and elongate, 

 the whorls very gradually enlarging with age, and appearing 

 to exactly correspond with P. de LorioFs figures of a cast 

 from Normandy (pi. vi. figs. 3, 4) which exhibits a similar 

 rate of increase in the volutions and the same obliquity at 

 the median depression. A small patch of original shell- 

 structure is still to be seen on the basal whorl, although not 

 included in our illustration, showing some obscure lines of 

 growth, which, however, are less sinuous than those depicted 

 by Orbigny in his original figure. 



The present specimen shows also considerable resemblance 

 to Homer's N. gosce, as interpreted by Goldf uss {' Petrefacta 

 Germaniae,' 1844, vol. iii. pi. clxxv. fig. 9, p. 41), from the 

 German Portlandian ; but the whorls appear to be higher and 

 the suture more oblique. 



A very similar cast of this genus has been figured and 

 described by Coquand under the name of N. pauli from the 

 Lower Cretaceous (Barremian) deposits of the Province of 

 Constantine in Northern Africa (' Geologic et Paleontologie 

 Constantine,' 1862, pi. iv. fig. 3), but it is capable of separa- 

 tion from the present form by its taller volutions and their 

 more deeply excavated sides. 



Messrs. J. F. Blake and W. H. Hudleston acknowledge 

 this species in the Corallian strata of Weymouth. 



The blackish limestone containing this specimen has also 

 produced a few casts of naticoid and bivalve shells ; but 

 these are of no scientific importance, as their determination 

 is quite impossible. 



Loc. Near Nobat. 



CEPHALOPODA. 

 By G. C. Ckick. 



As has already been explained, Major Hazelgrove's collec- 

 tion was obtained at two localities in S.W. Arabia — (1) in 

 the neighbourhood of Nobat Dakim, about 50 miles north of 

 Aden, and (2) from the neighbourhood of the villages of Al- 

 Kura and Samma, to the N.E. of Dihala, about 100 miles 

 N. of Aden. In a letter accompanying the specimens Major 

 Hazelgrove writes : — " I have marked the seven dark speci- 

 mens ' Nobat,^ though I found them about seven miles from 



