LeConte. | 598 [April 18, 
surface and thighs are punctulate and pubescent almost to the 
knees. 
14. Habrocerus? magnus. Elongate, depressed, blackish piceous. 
Head and prothorax shining, polished, the former with one frontal punc- 
ture each side. Prothorax twice as wide as long, emarginate at tip, broad- 
ly rounded at base, narrowed in front, strongly rounded on the sides, basal 
angles much rounded ; sides finely margined, with two marginal punctures, 
and one in the base near the angle, base very finely margined ; disc with one 
setigerous dorsal puncture each side. Elytra finely punctured and pubes- 
cent, with some feeble traces of striz near the base towards the suture. 
Dorsal segments densely punctulate. Beneath finely punctured and pu- 
bescent ; tip of abdomen, antennz, palpiand legs piceous. Length 3.8 mm. ; 
15 inch. 
3’ 6th ventral segment acutely emarginate, 7th more deeply emarginate 
almost to the base, 8th prominent, rounded at tip. 
© Ventral segments not emarginate. 
Isle Royale, Lake Superior. This species differs from 
H. Schwarzi by the much greater size, more elongate and 
depressed body, and pubescent elytra; it seems to be a con- 
necting form between this genus and Tachinus. 
15. Agathidium globatile. Black, shining, completely contrac- 
tile into a ball. Head and prothorax smooth. Elytra smooth, without 
sutural stria, finely margined, margin extending along the base almost to 
the scutellum, which is large and triangular. Length (when contracted) 2 
mm.; .08 inch. 
Marquette and Detroit. Much smaller than A. oniscoides, 
but not otherwise specially different. 
16. Agathidium parvulum. Hemispherical, not contractile, 
rufo-piceous, shining, smooth, elytra with sutural stria extending from the 
middle to the apex. Length 1.2 mm.; .05 inch. 
Marquette, Lake Superior. This is the smallest species 
in my collection, and is less contractile than any other known 
to me. 
17. Staphylinus ceesareus Cederholm; Er. Staph. 378. 
A specimen of this European species, found at Detroit, 
difters by having the golden pubescence confined to the 
neck and to the posterior margin of the second dorsal seg- 
ment. No golden hairs are visible either at the base and 
apex of the prothorax or on the sides of the ventral segments. 
18. Batrisus simplex. Rufous, shining, sparsely pubescent. Head 
