STAPHYLINID/E. 125 



slender, only feebly incrassate, the second joint but very slightly longer than 

 the third, the outer joints moderately transverse, the last unusually long, 

 gradually and finely pointed and much longer than the two preceding; 

 prothorax moderately transverse, perfectly parallel, the sides very evenly 

 and rather strongly, circularly rounded, much wider than the head and very 

 evidently narrower than the elytral base, the median line very finely and 

 obsoletely impressed, foveiform at base; elytra moderately transverse, 

 transversely rectilinear externally at the apices, the suture a third longer 

 than the prothorax; abdomen narrower than the elytra, parallel basally, 

 gradually distinctly tapering from before the middle, the sixth tergite (cf) 

 transversely truncate at tip, with a long and extremely slender process at 

 each side but with no trace of medial modification. Length 1.7-1.85 mm.; 

 width 0.38-0.45 mm. New York (Catskill Mts.). 



This species is also of the usual type, as exemplified by stilla 

 and others, but here the size is larger, the abdominal modification 

 of the male quite different in type, and the metasternal projection 

 is more advanced and angulate. It is abundant, but the male 

 seems to be rare. 



Datomicra insolida n. sp. Similar to the preceding in general form, 

 coloration and sculpture, but materially stouter and with a larger head, 

 more transverse prothorax and shorter antennae; head large and strongly 

 transverse, the eyes relatively not quite so large but convex, prominent and 

 at two-thirds their length from the base, the carinae similar; antennae moder- 

 ately incrassate and rather short, the outer joints more transverse than in 

 hebescens but with the last joint similarly long and gradually pointed; pro- 

 thorax strongly transverse, less greatly exceeding the head in width and more 

 nearly as wide as the base of the elytra, similarly rounded at the sides but 

 more feebly and indefinitely impressed along the median line, not foveate at 

 base; elytra much broader, the suture about a third longer than the pro- 

 thorax; abdomen similar though perhaps not quite so tapering posteriorly, 

 the sixth tergite (o") broadly arcuato-truncate, with a perfectly similar spicule 

 at each side. Length 1.7 mm.; width 0.5 mm. California (Gilroy Hot 

 Springs, Sta. Clara Co., and San Francisco). 



It is singular that two species so manifestly of the same type, as 

 shown by the peculiar male sexual characters, should occur in such 

 widely different zoological provinces. The present species is not 

 quite so black as hebescens, much stouter and with a larger head as 

 stated above. Though allied, there can be no doubt of the distinct- 

 ness of the two species. 



Datomicra surgens n. sp. Rather stout, moderately convex, the anterior 

 parts relatively unusually small, shining, the reticulation feeble, rather coarse 

 but feeble and irregular on the abdomen, the punctures very fine, not dense 

 and but feebly asperulate; color black, the elytra and legs dark piceous, 

 the latter paler distally; head large, subquaclrate, slightly transverse, the 



