STAPHYLINID^:. 123 



which are strongly upturned and separated by less than twice the deeply 

 sinuate interval between them and the moderate lateral processes. Length 

 1.2 mm.; width 0.22 mm. New York (Catskill Mts.). 



Differs from schematica in its smaller size and rather more slender 

 form, and more especially, in the male sexual characters, there 

 being no trace of the discal spicule of the fifth tergite in that species. 



Datomicra incumbens n. sp. Stouter and more depressed than any of 

 the preceding, shining, the reticulation everywhere distinct, the punctures 

 anteriorly extremely minute and rather sparse, closer but only faintly as- 

 perulate on the elytra, sparse and extremely fine on the abdomen; color 

 piceous-black throughout; head rather transverse, rounded at the sides, 

 the eyes at notably less than their own length from the base, the carinae very 

 fine, far from entire; antennae dark, short, moderately incrassate, the basal 

 joints of normal form, the outer very moderately transverse, the last as long 

 as the two preceding; prothorax strongly transverse, much wider than the 

 head, as wide as the elytral base, parallel and strongly rounded at the sides, 

 having a very small basal impression; elytra large, very moderately ab- 

 breviated, with straight and slightly diverging sides, truncate at the apices, 

 the suture fully one-half longer than the prothorax; abdomen much narrower 

 than the elytra, perfectly parallel, the sixth tergite feebly sinuato-truncate 

 in the type, the sixth ventral plate produced and strongly rounded, both 

 relatively small in size. Length 1.28 mm.; width 0.35 mm. Nevada (Reno) . 



This species is certainly not a true Datomicra, but, if placed else- 

 where, a special subgenus would have to be erected for it and this 

 would be inadvisable at present. 



Datomicra stilla n. sp. Rather slender, fusiform, black, the elytra dark, 

 the legs paler, piceous, somewhat shining, the close-set punctures strongly 

 asperate, becoming less so only toward tip of the more shining abdomen; 

 head wider than long, flattened medially, parallel, the convex eyes at nearly 

 two-thirds their length from the base, the carinse entire; antennae rather short, 

 moderately incrassate, the third joint shorter than the second, gradually 

 narrowed basally, the outer joints not quite twice as wide as long, the last 

 pointed, longer than the two preceding ; prothorax rather large and transverse, 

 much wider than the head and fully as wide as the elytral base, parallel and 

 nearly straight at the sides, rounding anteriorly, the median line finely and 

 feebly impressed except at apex; elytra moderately transverse, the suture 

 nearly a third longer than the prothorax; abdomen narrower than the elytra, 

 gradually but very feebly tapering from base to apex, the sixth tergite (cf) 

 with the lateral slender processes unusually long, separated from each of 

 the small and rather acute but porrect and tumescent medial teeth by but 

 little less than the distance separating the latter. Length 1.5 mm.; width 

 0.35 mm. Rhode Island (Boston Neck). 



A typical Datomicra of the schematica and vacans type, but larger 

 and with a broader prothorax. The fifth tergite of the male is 

 wholly unmodified. 



