BEMBIDIIN/E 167 



thorax subcordate, blackish, very smooth and shining, the anterior 

 and posterior margins dark rufous, the stria well impressed, the 

 base with a few scattered punctures; foveae deep and rounded, the 

 hind angles rather prominent; elytra oblong, shining, piceous, 

 tinged with rufous at base and apex, the surface flattened, the foveae 

 "on the third stria," one before the middle, the other at posterior 

 third; striae "neatly" punctured, well impressed at base, becoming 

 obsolete at tip, the intervals slightly convex; the under surface is 

 dark brown, shining, the abdominal segments reddish-brown, paler 

 toward apex; legs rufo-fulvous. The length is 5 mm., and the type 

 was taken at Bellefonte, Centre Co., Pennsylvania. The punc- 

 tured elytral striae would seem to suit oblongulus, but it differs in 

 color and in its materially larger size. The flattened elytra and 

 punctured striae will not fit crassicornis in anyway. There can be 

 but little doubt that wingatei is a valid species, and possibly of 

 this genus, though the elytral striae and position of the foveae as de- 

 scribed, are not conformable, but of this I could form no opinion 

 in the absence of typical specimens. I have seen no examples of 

 true Amerizus taken anywhere except near the Pacific coast-line. 



Anillus Duval 



The members of this genus are all very small, rather slender and 

 subdepressed to convex, pallid in color and completely devoid of 

 eyes ; they inhabit caves or other dark retreats and are not common 

 in collections. 



Those species of Anillus actually known to me by material at 

 hand are assignable to three very distinctly characterized subgenera 

 as follows : 



Second ventral segment shorter than the next two combined, separated 

 laterally from the first which extends entirely across the abdom- 

 inal base by an anchylosed suture; mental sinus small, deep, the 

 tooth triangular; mandibles short, regular, arcuate; sides of the head 

 margined above as usual; antennae short, the joints abbreviated, 

 the second nearly as long as the next two combined; elytra not ex- 

 planate at the sides, the lateral margin broadly and feebly serrate 

 basally. [Type A. carolince nov.] Atlantic regions of North Amer- 

 ica Anillinus n. subgen. 



Second ventral segment very large, occupying half the abdomen, the first 

 only visible at the sides; mental sinus broad and shallow, the tooth 

 small, acicularly prolonged at apex; antennae longer, the joints 

 elongate-oval, the second somewhat longer than the third and asym- 



