June, i8 9 s.] Casey : North American Coleoptera. 93 



Sphindus Chev. 



The species of this genus are small and oblong, with duller surface 

 lustre and moderately long, rather sparse pubescence, serial in arrange- 

 ment on the elytra. The three species before me may be thus sepa- 

 rated : — 



Antennal club 2 jointed 2 



Antennal club purely 3-jointed 3 



2 — Pronotum minutely and rati er closely punctured, more or less rufo-piceous in 



color. Atlantic regions to Iowa americanus Lee. 



Pronotum more coarsely and quite sp rsely punctured. Body black, stouter, dull in 

 lustre ; head and eyes moderate in size, the epistoma polished ; antenna; a little 

 longer than the width of the head, the club only moderately stout, the tenth joint 

 twice as long as the ninth ; prothorax nearly twice as wide as long, the sides just 

 visibly convergent from base to apex, feebly arcuate ; apex broadly arcuate ; ely- 

 tra scarcely a fourth longer than wide, barely wider than the prothorax and two 

 and one-half times as long ; serial punctures rather fine, the intervals dull and 

 minutely shagreened. Length 1.9 mm.; width 0.9 mm. Colorado (Buena 



Vista — 8000 feet) crassulus, sp. nov. 



3 — Narrowly oblong, more shining, piceous black, the elytra, legs and antennae pale 

 testaceous ; head moderate, the eyes large and convex, separated by about three 

 times their own width ; antennae moderate in length, the last three joints forming 

 a compact subcylindric club; prothorax; much smaller than in the two pre- 

 ceding species, transverse, the sides subparallel ; surface evenly convex, very 

 minutely and not very closely punctulate ; elytra two-fifths longer than wide, 

 about a fifth wider than the prothorax and three times as long ; serial punctures 

 feeble but distinct, the intervals smooth and alu'aceous; apex obtusely rounded 

 as usual. Length 1.7 mm.; width 0.7 mm. Canada (Toronto). 



trinifer, sp. nov. 



Americanus varies greatly in size as usual in this and neighboring 

 families ; it is quite abundant and occurs in fungi of various species. 



