Casey — Observations on the Staphylinidae. 839 



black throughout, the legs pale brown; antennae blackish, paler toward 

 base, slender, feebly incrassate distally, attaining the middle of the elytra, 

 the elongate second and third joints equal, fourth and fifth elongate, 

 sixth to tenth from as long as wide to very nearly so, the eleventh 

 sharply pointed, as long as the two preceding joints combined; head as 

 long as wide, convex, briefly and linearly impressed at the middle of 

 the vertex; sides arcuately converging behind the moderately large and 

 somewhat prominent eyes to the neck, which is barely two-thirds as 

 wide as the head; prothorax a fourth wider than the head and a fifth 

 wider than long, widest before the middle, the sides broadly arcuate, 

 more converging near the apex, feebly converging and straight toward 

 base, the angles obtuse but scarcely rounded, the surface broadly con- 

 cave in median third from near the apex to just before the basal mar- 

 gin ; elytra three-fifths wider and one-half longer than the prothorax, 

 subparallel, the humeri broadly exposed at base, the angle rounded; 

 abdomen not quite as wide as the elytra, parallel, narrowed near the tip ; 

 legs short, moderately slender. Length 3.8 mm.; width 0.93 mm. New 

 York (Ithaca), — H. H. Smith = yentralls n. sp. 



In the male the fifth tergite has a very stout and obtusely 

 rounded medial ridge, almost throughout the length, more 

 elevated posteriorly, where it is slightly excavated at each 

 side of the summit, the apical margin of the fourth tergite 

 having a feeble median sinuation ; sixth plate feebly sinuate 

 throughout the width and with four small tuberculiform 

 swellings of the edoe boundino; the sinus. 



Anepsiota Csy. 



Besides quadricollis, the type of the genus, Ayiepsiota 

 may receive provisionally the following species, agreeing in 

 general facies but departing materially in antennal structure 

 and in its shorter tarsi, although the two basal joints of the 

 posterior are each unusually elongated : — 



Form more slender than in quadricoUis, rather convex, pale and uniform 

 rufo-testaceous throughout the body, legs and antennae, somewhat 

 shining though feebly micro- reticulate throughout, the punctures very 

 fine, not distinct, more evident but not dense on the elytra, sparse on 

 the abdomen; pubescence pale but subdecumbent and inconspicuous; 

 head somewhat elongate, parallel, rather abruptly, obliquely and arcu- 

 ately narrowed at base, the eyes notably small, slightly convex; occi- 

 put feebly impressed along the middle; antennae extending somewhat 

 beyond the tips of the elytra, gradually an I rather strongly incrassate 

 distally, the second and third joints elongate, the former the shorter. 



