STAPHYLINID^E 179 



not differing in character toward the scutellum as is the case in some other 

 genera, coarse, somewhat rough and close along the bottoms of the 

 mutually equal, deep and rather sharp three tergitical impressions; 

 pubescence inconspicuous; head but little wider than long, slightly 

 wider than the prothorax, parallel, the eyes at nearly their own length 

 from the base, not evidently more prominent than the tempora, which 

 are straight and parallel to the broadly rounded angles; antennae mod- 

 erately long, blackish, picescent basally, gradually, strongly incrassate 

 and thick distally, the basal joint long, slender, cylindric, as long as 

 the second and only a little thicker, the third but little shorter, fourth 

 slightly elongate, fifth as long as wide, the joints thence becoming much 

 larger and rather strongly transverse, the tenth longer and more 

 parallel than the ninth, a third wider than long, the last scarcely one-half 

 longer than the tenth; prothorax slightly wider than long, very prominent 

 laterally near apical fourth, the sides abruptly converging and sinuate 

 thence to the base, which is rather more than half the maximum width, 

 the sulcus deep and abruptly excavated; elytra posteriorly three-fourths 

 wider, the suture barely a third longer, than the prothorax; abdomen 

 very slightly widest behind the middle, where it is as wide as the elytra, 

 the fourth and fifth tergites more closely punctulate and somewhat 

 darker than the others, the fifth shorter than the fourth. Length 1.72 

 mm.; width 0.42 mm. Utah (southwestern), Weidt. 



Differs from subsimilis in the more slender and cylindric basal 

 joint of the antennae, and from texana, it differs in its larger head, 

 less incrassate antennae, with much less transverse outer joints, 

 less rounded sides of the abdomen, with broader fifth tergite, and 

 in many other characters. From angulata, to which it is more 

 closely allied, it differs in its smaller size, less conspicuous pubescence, 

 relatively narrower prothorax and shorter legs and tarsi ; also in its 

 more slender and elongate fourth antennal joint. 



Tribe BOLITOCHARINI. 



In my two previous papers touching this tribe (Ann. N. Y. Acad., 

 VII, p. 348, and Tr. Acad. St. Louis, XVI, p. 344), several errors 

 occurred, due to miscounting the joints of the middle tarsi, a very 

 difficult and uncertain matter in many cases when the tarsus is in 

 situ. These errors should be corrected as follows; they have 

 been alluded to above under the Myrmedoniini : 



Asthenesita Csy., (1. c., p. 365) belongs near the Myrmedoniid Sipalia 

 Rey. 



Sipalia Rey (Csy.), (1. c., p. 366) is a new subgenus of Pasilia Rey, 

 described below. 



Silusida nanella Csy., (1. c., sec., p. 271) is a Myrmedoniid, redescribed 

 (Mem. Col., I, p. 109) under the name Sableta (Canastota) beatula. 



