32 [March, 



Description of a new Bulimus. 



B. lineolatus. Oblong-ovate, thin, slightly umbilicated ; whorls 6, smooth ; 

 columella reflected, very narrow ; lip reflected, very thin and acute ; color white 

 and fulvous, variegated, with dark brown stripes , aperture more than half the 

 length of the shell ; spire conical. 



Inhabits Volcano of Cartago, Costa Rica. t 



This species approximates B. paziantis of D'Orbigny, but is more ventricose, 

 has a shorter spire, broader bands, narrower columella, and the lip is somewhat 

 reflected, which is not a character of the allied species. That shell has the 

 aperture less than half the length of the shell, whilst the other has it more 

 than half its length. 



Description of a new Alasmodonta. 



Subovate, thin, slightly contracted medially; umbonal slope rounded, slightly 

 ventricose ; ligament margin elevated ; posterior margin obliquely truncated, the 

 extremity subangulated and much above the line of the base ; epidermis oliva- 

 ceous, with a few obscure rays ; cardinal tooth single in the right valve, long, 

 compressed, elevated, triangular ; in the left valve widely trind, the posterior 

 lobe obsolete, and situated posterior to the apex; within bluish. Length If, 

 nearly ; height f. 



Locality. J. G. Anthony. 



Exteriorly this shell closely resembles 77. eolliuus, Con., when young and 

 without spines. 



N<ote ou the genus Amblychila, Say. 



By John L. Le Conte, M. D. 



In a small bottle of specimens of Coleoptera, collected in New Mexico by 



Major Sibley, U. S. A., recently sent me through my kind friend Prof. Baird, 



was fortunately contained a specimen of Amblychila; as some confusion seems 



-still to exist with regard to this very rare insect, a few remarks may not be out 



of place. 



Fort Union is about seventy miles E. N. E. from Santa Fe, and consequently 

 ear the base of the Rocky Mountains; it will be remembered that Say's speci- 

 men was also obtained near the same chain, although at a point farther north. 

 This fact, as well as the complete agreement of the specimen with Say's de- 

 scription, fixes it as an authentic type of A. cylindriformis. The outline (Plate 1) 

 wood cut appended to this note was made by Mr. W. Van Ingen, from a 

 drawing by G. G. White, and is very accurate in form. It will readily enable 

 'the necessary comparison to be made wilh the Californian specimen described by 

 Mr. Reiche, which I believe was afterwards purchased by Baron Chaudoir. 



On comparing the New Mexican specimen with Mr. Reiche's figure, (Am. 

 Ent. Sue Tr., vol. S, pi. 19, also copied into Chenus. Encyc. Hist. Nat.) several 

 important differences may be perceived: the head and thorax of his is propor- 

 tionally narrower, and in the enlarged figure of the head, the labium is repre- 

 sented as having a quite prominent tooth each side of the emarginate medial pro-? 

 longation, and the lateral angles are rounded; in mine, the labrum each side of 

 the prolongation is merely slightly sinuous, and the lateral angles are rectangu- 

 lar, so that the general outline each side of the middle is decidedly concave. The 

 'large punctures in the side figure seem to form a regular series between the 

 -costa and the suture, w T hile in mine they are distributed irregularly. 



In comparison with the description given by Mr. Reiche (1. c. p. p. 560), I 

 have only to say, that my specimen shows a quite decided brownish tinge on the 

 elytra, while the Californian specimen is described as entirely black; and that 

 the smaller punctures of the elytra are by no means obsolete. Mr. Reiche's re- 

 mark in the generic description, that the basal tooth of the mandibles is bifid, ap- 

 plies only to the right mandible : that of the left side has, it is true, a correspond- 

 ing prominence, but it is so small and so far back, as not to alter rhe outline in 

 any way, and therefore Mr. Reiche's observation tends to produce confusion. 



