WORTH OF MEXICO. : > 19 



1 1 .1 ciculatus, Lee, Proc. A.cad 



Differs from the preceding in having the elytra distinctlj striate, striae with large punc- 

 tures, interstices moderatelj convex. Thorax more strongly rounded than the preceding, 

 witli the Bides distinctly reflexed, and with the disc more convex. 



( )ccurs abundantly in Texas. 



Length . 10 inch. 



O. > a y i . oblong, parallel, brownish opaque. Head finely and densely punctured; clypeus rather deeply emargi- 

 Thorax feebly convex, one-fifth broader than long, sides moderately rounded in front, nearly straigbl and 



Blightly divergent toward the base; apex feeblj ite, base bisinun paque, very finelj and densely 



punctured, Lateral margin slightly thickened. Elytra sub-parallel, feebly convex, opaque, no) deeply Btriate, and 

 with punctures neither approximate nor deeply impressed; interstices slightl] convex and very minutely punctured. 

 Body beneath ferruginous, shining. Length .40 inch; 11.5 mm. 



One specimen from Kansas, kindly given me by Mr. P. S. Sprague, of Boston. 

 Our species ofOpatrinus may be known as follows: 

 Thorax very finely punctured; inner side of male anterior tibiae distinctly 



sinuate. s ay i . 



Thorax coarsely punctured; anterior tibiae of male slightly arcuate only. 



Elytra not striate, but with rows of large deeply impressed punctures, notus. 

 Elytra striate ; sides of thorax slightly reflexed. a ciculatus. 



GROUP II — BLAPSTINI. 



This group differs from the preceding in having the eyes entirely divided. A.s in the 

 previous group, the anterior and sometimes the middle tarsi are dilated in the male, and 

 the anterior tibia; are also somewhat curved in the same sex ; in some of the genera, how- 

 ever, the dilatation is but little apparent. The tibiae and femora of both sexes in all the 

 genera are entirely unarmed. Notwithstanding the number of genera proposed by Mul- 

 sant in this group, it has been found necessary to add several new ones. 



The following table will give their differences: 

 Anterior tibiae with the outer angle obliquely truncate. 



[ntercoxal process of abdomen triangular, acute or oval at tip. 



Antenna' long, slender. MR fSMUS. 



Antenna' stout, joints 1-s broader than long. CONIBIUS. 



Antenna' stout, joints j-s longer than broad. Bl \r-;i\i s. 



[ntercoxal process broad truncate al tip. notibii 5. 



Anterior tibiae with the apex emarginate, outer angles prolonged. 



Tibiae broad, nol linear. DLOS. 



MEC1 SMI S, n. g. 

 This name is proposed for a sp cies differing from the other Blapstini bj its eloi 

 depressed form, thorax sub-quadrate, narrower at base than the elytra. The antenna' are 



AMKRI. PBI1 -Vol.. XIV.- 38 



