LeConte.] 



CRYPTOKHYNCHINr. 247 



as the prothorax, nearly smooth at tip, punctured and feeljlj' striate at base; 

 head punctured. Prothorax wider tlian long, narrowed from tlie base for- 

 wards, sides nearly straight, convex; not denselj'' punctured, with a median 

 stripe and a small spot each side, smooth. Elytra with striaj composed ot 

 large, distant punctures, with an irregular basal fascia, and a large, com- 

 mon spot behind the middle white; the latter prolonged backwards along 

 the suture nearly to the tip. Beneath thinly clothed with yellowish scales; 

 ventral segments 2-4 nearly smooth; fifth with a few large punctures; 

 thighs obtusely toothed. Length 4.G mm. ; .18 inch. 



South Carolina and Georgia; Dr. Zimmermanu. I have adopted the spe- 

 cific name given hy Dejean in his Catalogue. 



2. Ps. sedentarius (Say), Cure. 30 (Cleogonus); ed. Lee. i, 298; Boh., 

 Sch. Cure, iv, 267. 



Florida; unknown to me. Differs from the preceding l.iy the unarmed 

 thighs, and diftereutly formed posterior elj'tral spot. ". cio^^.x r>.^/a 



TYLODERMA Say. (1831.) 

 Analcu Sch. (1837.) 



In this genus tlie beak is rather short and stout, and the mesosternum, 

 while very prominent, and forming a sharp edge which limits the pectoral 

 groove, is very feebly emarginate, resembling in this respect Acalles jiecto- 

 ralu. From Accdles it differs evidently, besides many other characters, by 

 the more elongate form; the very distinct postocular lobes, the prothorax 

 prominent and rounded in front; the longer metasteruum, with distinct, 

 though narrow side pieces. From Cryptorhynclms it is distinguished by the 

 form of body, the feebly emarginate mesosternum, and the 6-jointed funic- 

 ulus, as well as by the stouter beak, with niore suddenly declivous anten- 

 nal grooves. The first ventral suture is nearly obliterated. 



Tlie species fall naturally into two divisions already indicated by Dr. 

 Horn, Proc. Am. Ent. Soc. 1873, 467; the first contains the type of Tylo- 

 derma, the second that of Analcis; I have, therefore, restored the former 

 name to the conjoined genus. 



Division I. 



In the first division the color is not metallic; the pubescence is in distinct 

 si)Ots, and sometimes scaly; the abdomen is coarsely punctured, and the 

 punctures of the elytra are large. These species resemble in appearance 

 Mcemactes, but differ very greatly in structural characters. 



I have nothing to add to the characters of the four species of this group, 

 as given by Dr. Horn, but to say that T. foceolatum varies greatly in size, 

 some specimens being no lai-ger than T. variegatum, from which it is at once 

 distinguished by the foveate rather than punctate prothorax. 



1. T. morbillosum. Analcu morb. Lee. Pac. R. R. Exj)!. insects, p. o8; 

 Horn, Proc. Am. Phil. Soc. 1873, 467. 

 One specimen, San Francisco, California. 



