NORTH OF MEXICO. 3 i 1 



CIBDELIS, 1/ 

 Cibdelis, Mann . Beitrag 



The mentuin is trapezoidal, narrower behind, strongly (blaschkii) or feebly (bachei) 

 rounded in front, convex at middle, with a faint groove on each side, supported by a gular 

 peduncle. Head rounded in front, trui i tlaschkii) or em i (bachei) at middle 



ofepistoma. Thorax truncate in front, rounded behind, hind angles distinct, not promi- 

 nent, anterior angles obtuse. The metasternum i-- short and the body apterous. The 

 mandibles of both species are very feebly emarginate. 



Two species from California arc known. 



C. blasckkii, Mann., Beitr. 284. 



The thorax is densely and rather coarsely punctured. The elytra have faint striae of 

 punctures, and small rounded tubercles placed in more or less regular rows. Tliis 

 species is more convex and elongate than the next, and differs also in the form of the 

 front and the greati r prominence of the fronl of the mentum. 



Length .52— .56 inch. 



Occurs from San Francisco southward, under hark and stones. 



C. bachei, Lee, Proc. A.cad. L861, p. 353 



The thorax is here grauulose, less convex and proportionately broader than blaschkii. 

 The thorax and elytra are also more opaque, and the tubercles of the latter rather smaller 

 and more closely and regularly placed. The elytra are rather more depressed and more 

 broadly oval than the preceding species, and differs also in the characters mentioned 

 above. 



Length .56 inch. 



Occurs only at Santa Barbara and on the Island of San C'lemente. 



GLYPTOTUS, Lee. 

 Qlyptotus, Lee, Proc. Acad. IX. ]>. 75. 



With this genus commences a series of genera in which the antenna' are longer than 

 the head and thorax, tin- outer joints not being transverse bill more or less triangular and 

 closely articulated. This form is somewhat similar to that seen in many Efelopides, and 

 it may be considered doubtful whether these genera (excepting Rhinandrus) should nol 

 outer that tribe or form a now one closely allied to it. The vestiture of the tarsi of these 

 genera, with the exception noted, is intermediate between the previous group of gen ra 

 and the Tenebriones which follow. In two genera the males have the anterior tarsi 

 slightly dilated. 



The mentum ofGlyptotus is small, rhomboidal, narrowing behind, very prominent al 

 middle, and with prominent angles; supported on a very narrow gular peduncle. The 

 eyes are larger on the front than other of our genera. On each sid< of the head abo* - 



A.MKRI. PHILOSO. I . XIV- 



