Geological Society. 147 



sides the longitudinal stria? mentioned, there are some others, but 

 these are short and confined to the base of the elytra ; in the males 

 about five or six longitudinal grooves may be seen at the base of each 

 elytron, and all of these grooves are more or less wavy. The sides 

 of the prosternum present distinct longitudinal sulci, and narrow 

 longitudinal sulci are observable on the abdominal segments. 



Three specimens of this new species were brought from Port De- 

 sire by Mr. Darwin. 



Genus Callyntra, Solier. 



Callyntra vicina, Solier. One specimen of this species was brought 

 from Valparaiso by Mr. Darwin. 



Genus Cerostena, Solier. 



Cerostena punctulata. Cer. atra, elongato-ovata ; capite crebre 

 punctato et transversim impresso ; thorace transverso, antice pro- 

 fundi emarginato, supra fere piano, punctato ; marginibus latera- 

 libus reflexis, disco foveis duabus impresso; elytris oblongo-ovatis, 

 paulb convexis, suprh punctulatis, singulis costis duabus dorsali- 

 bus subobliteratis ; carina laterali paulb prominente. 



Long. corp. 8| lin. ; lat. 4J lin. 



Hab. St. Cruz. 



In general appearance the present species resembles the Blaps ob- 

 tusa, but the thorax is much shorter and the body more depressed. 

 On the hinder part and sides of the elytra is an ashy pubescence, 

 and I think it probable that small hairs have originally been scat- 

 tered over the whole upper part of the elytra and have been rubbed 

 off the most exposed parts. On the under side of the head and body 

 small hairs are also perceptible in the less exposed parts. The pro- 

 sternum is very rugose beneath on the fore-part, and has distinct 

 longitudinal furrows at the sides, as has also the mesothorax ; the 

 abdominal segments are thickly punctured, and there are longitudi- 

 nal rugae on the basal segments. The legs and tarsi are moderately 

 well clothed with small yellowish hairs. 



Unfortunately the antennae are not perfect in the only specimen 

 which Mr. Darwin brought home of this species ; in the characters 

 afforded by other parts, however, it agrees with M. Solier's genus 

 Cerostena : the absence of sulci on the upper surface of the thorax 

 would serve to distinguish it from the species of that genus hitherto 

 described. 



Psectrascelis pilipes, Solier. Nyctelia pilipes, Guerin. Numerous 

 specimens of this species were brought fromCoquimbo by Mr. Darwin. 



Entomoderes Erebi, Solier. Mr. Darwin's collection contains one 

 specimen of this curious insect, and this was found at Mendoza. 



GEOLOGICAL. SOCIETY. 



Dec. 15, 1841. — A paper was read, "On the occurrence of the 

 Bristol Bone-Bed in the Lower Lias near Tewkesbury," by Hugh 

 Edwin Strickland, Esq., F.G.S. 



After alluding to the occurrence of the bone-bed at various places 

 between Westbury and Watchett, also at Golden Cliff and St. Hilary 



L2 



