250 H. C. FALL. 



48. C simile Lee. — Very closely related to consobrinum, and it is quite pos- 

 sible that these two are only geographical races of one species. The few speci- 

 mens seen differ constantly in being of less slender form, the ratio of width to 

 length varying from .58-. 61, while in consobrinum it is very close to .56 in each 

 of the five examples seen. The coarser punctures of the head are much less 

 distinct in simile, and the finer punctuation of the metasternum is quite evident, 

 heiug almost entirely obsolete in consobrinum. Length 2.7-3 mm. 



Hab. — Florida (Biscayne and Key Largo). 



The region inhabited by simile is thus seen to be identical with 

 that occupied by abbreviation, to which both this and consobrinum 

 are closely related. Abbreviation is distinctly stouter than either; 

 in several measured specimens the rate of width to length varying 

 from .63-.65 ; the head is practically devoid of coarser punctures, 

 while those of the pronotum are much finer and less numerous, 

 being confined to the vicinity of the front angles; the lateral stria? 

 of the elytra reach only the apex of the second ventral segment, 

 while in both simile and consobrinum the lateral striae or one of 

 them at least reaches the base of this segment, the grooves of front 

 tibiae while somewhat variable are never so completely developed as 

 in simile and consobrinum. 



49. C pingue u. sp. — Brown, moderately pubescent, broadly ovate, a little 

 more less than three-fifths as wide as long, distinctly gibbous in profile. Coarser 

 punctuation distinct on the anterior portion of the head, becoming obsolete pos- 

 teriorly ; distinct but rather inconspicuous at the sides of the pronotum ; a little 

 stronger on the elytra. Metasternum punctate at middle, nearly or quite smooth 

 at sides. Eighth antenual joint fully one-half longer than wide, subparallel ex- 

 ternally, apical angle feebly obtuse. Front tibiae bisulcate; middle tibiae not 

 sulcate. Length 2.2-3.1 mm. 



Hab. — Arizona (Santa Rita Mountains, Oracle, Bright Angel, 

 Pinal Mountains, Williams, Ash Fork). 



There is some variation in the distinctness of the intermixed 

 coarser punctures, these being scarcely detectable in the single 

 specimen from Ash Fork. 



50. C vacuuin n. sp.— Closely related in most respects to pingue, but seem- 

 ingly distinct by its narrower (not over three-fifths as wide as long) and more 

 parallel form, and much coarser intermixed punctuation. In both species the 

 posterior groove of the front tibiae is deep and not strictly marginal, leaving the 

 intermediate area narrow and quite strongly convex. The anterior groove is 

 less deep and abbreviated basally in pingue, but is somewhat better developed in 

 vacuum. Length 2.25-2.5 mm. 



Hab. — Tucson, Arizona, four examples ; Brownsville, Texas, 

 numerous examples (Dury and Barber). 



