170 MEMOIRS ON THE COLEOPTERA. 



last pointed and as long as the two preceding; prothorax very moderately 

 transverse, a third wider than the head and as wide as the elytra, the sides 

 feebly converging and slightly arcuate from near the apex to the base, the 

 latter rounded; surface with a moderate rounded and feeble impression at 

 base, the hypomera feebly inflexed, flat and wholly visible from the sides; 

 elytra short, with just visibly diverging straight sides, the apices subtruncate 

 laterally, the suture equal in length to the prothorax; abdomen large, very 

 broad, parallel, fully as wide as the widest part of the elytra, the fifth tergite 

 distinctly longer than the fourth; male sexual characters not observable. 

 Length 1.65 mm.; width 0.48 mm. California (San Francisco) to Vancouver 

 Island (Victoria). 



Distinguishable at once by the very stout form and pale colora- 

 tion. 



Ousipaliaturpiculan. sp. Stout, rather convex, narroweranteriorly, shining, 

 the reticulation somewhat coarse, the punctures fine and sparse, the vestiture 

 sparse but rather long and coarse; color piceo- testaceous, the head piceous, 

 the abdomen black, paler at apex, the legs pale; head rather large, orbicular, 

 slightly wider than long, parallel and subevenly rounded at the sides, the 

 eyes not at all prominent, elliptic and coarsely faceted, at nearly twice their 

 length from the base, the carinje obsolete; antenna pale, nearly as in the 

 preceding, the fourth joint more strongly transverse; prothorax moderately 

 transverse, evidently though not much wider than the head, as wide as the 

 elytral base, widest well before the middle, the sides somewhat strongly and 

 subevenly rounded, not visibly impressed; elytra short, with slightly diverg- 

 ing sides which are feebly and subevenly arcuate, the suture slightly shorter 

 than the prothorax; abdomen broad, parallel, fully as wide as the widest 

 part of the elytra, the fifth tergite much longer than the fourth. Length 

 1.5-1.62 mm.; width 0.37 mm. Colorado (Boulder Co.). 



Allied to pacifica but much less stout, with the head not inflated at 

 base but parallel and evenly rounded at the sides and with much 

 less prominent eyes. 



Group HOPLANDRI/E. 



This is a distinctly American group of the Myrmedoniini and 

 distinguished from all others, as the Aleochane are among the 

 Aleocharini, by having a distinct supplementary appendage or false 

 segment at the apex of the slender fourth palpal joint. It includes 

 Hoplandria Kr., Platandria Csy.,and Tetrallus Bernh.,at present. 

 All of the genera have distinct male sexual characters in the form 

 of dorsal crests and tubercles on the abdomen. Tetrallus is allied 

 more closely to Platandria, but differs in the contiguous middle 

 coxae, with short and acute mesosternal process and in having the 

 first four joints of the hind tarsi equal or subequal as in Hoplandria; 



