NORTH OF MEXICO. 369 



A LPHITOB1 IS. Sleph. 



Alphitobius, Stephens, Must. Brit. Ent. V. p. 11. 



A. diaperiuus, Pnnzer, Teuebrio); Wollaston, Alphitobius). 

 A. piceus, Oliv., Helops ; Mills., (Alphitobius). 



These two insects are not natives of onr country, and therefore require no special men- 

 tion. For full description, both of genus and species, the student is referred to the works 

 nil the species ol the various European local fauna?. Large numbers are occasionallj 

 brought in vessels from various parts of the world. A few years since a vessel arrived at 

 Philadelphia from Sierra Leone, the c irgo of which was plentifully overrun by the latti c 

 species. A.s far as I can discover, all the specimens found arc direct importations, and 

 they (In not appear to propagate. 



I 5 VKI S, Lee. 



Cynseus, Lee, Gen. Col. X. A., p. 



The eyes are rather large and convex, deeplj emarginate in front, slightly behind ; 

 inferior portion of the eye large. Antenna; with the third joint nearly equal to fourth 

 and fifth ; joints five tn ten transverse, last joint oval. Hind tarsi slender, first joint long. 



C. anguatua, Lee, (Plalydema Ann. Lye. V. 149. 



Thorax broad, equalling one-and-a-half times the length, emarginate in front, sides 

 strongly rounded, not narrowing in front, as broad as the elytra. Elytra feebly striate. 

 stria- punctured, interstices feeblj convex, densely and finely punctured. 



Length .20-.22 inch. 



Found in the Colorado Desert of California, probably near Vallecito. 



C. ilc p it S S il S, II. sp. 



Differs from the preceding as follows: Thorax less transverse, nearly truncate at apex. 

 sides very feebly rounded, narrowing in front. Base narrower than the base of elytra. 

 Striae of elytra not deep, more evident at apex, interstices more sparsely punctured. In 

 both species the head and thorax are rather densely, but not coarsely punctured. 



Length .22-.30 inch. 



Occurs in the southern Coast Range ol California. 



METACLISA, Duoal. 



Metaclisa, Duval, Gen. Col. Europe. Ill, p. 200. 



In this genus the mentum is distinctly trilobed in front, the middle lobe prominent, 

 lateral lobes inflexed. The anterior tibite are slender, the epipleurae short and the Hist 

 joint of the hind tarsi not longer than the two succeeding joints together. 



M. marginalia, piceoua 1 «1 1 ek, shining, elongate oval, sub-parallel. Head slightly broader than long, feebly 

 emarginate in front, coarsely but not densely punctured, cpiatoiua paler and the mora finely and densely punctured. 



AM Kit I. PIULOSO. sue. — VOL. XIV.- 



