MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 43 



Specimens examined. — I have seen the paratype and 13 other exam- 

 ples in the United States National Museum, 28 in the British Museum 

 under the name H. hostilis Fauvel, three from the IMuseum of Com- 

 parative Zoology, and 98 collected by Chapin and Blackwelder in 

 1935-37. 



Remarks. — I am unable to segi'eg-ate these specimens into more 

 than one species. There is considerable variation in my large series 

 in the j)unctation and sculpture, in the pronotal foveae, and in other 

 characters. 



This species can be distinguished from the Central American 11. 

 hostilis Fauvel by the presence of ground sculpture on the pronotum, 

 the absence of basal depressions on the pronotum, and the evenly 

 spaced pronotal punctures. 



Sr. Bierig records this species from under the bark of a "gmn" 

 tree (tropic birch ?). Our Cuban specimens were collected "on 

 ceiba''; that is, on a silk cotton tree, presumably under the bark. 

 The Jamaica examples were taken from under bark of the silk cot- 

 ton tree and the tropic birch, as well as flying at dusk. 



II. Genus PIESTUS GTavenhorst 



Picstus Gravenhohst, 1S06, p. 223. 

 Trichocoryne Gray, 1832, p. 30G. 

 Tricoryna Laporte, 1S34, p. 126 (misspelling). 

 Trichocoryna Bkulle, 1837, p. 91 (misspelling). 

 Subgenus Zirophorus Dalman, 1821, p. 372. 



Zyrophorus Latreille, 1832, p. 77 (misspelling). 



Imnaens Leach, seq. Latreille, 1832, p. 87 (as synonym of Zyrophorus). 



Iraencus Lacokdaire, 1S.")4, p. 127 (misspelling). 

 Subgenus Antropiestiis Beknhauer, 1917a, p. 45. 



Geiwtype. — P. sulcaius Gravenhorst (monobasic). Of THchoco- 

 ryne^ Zirophorus penicillatus Dsi\msin= Trichocoryne penicillatus 

 (Dalman) (monobasic) ; of Zirophonis and Irenaeus^ Z. fronticornis 

 Dalman =/. fronticornis (Dalman) (designated here) ; of Antropies- 

 tiis^ A. andinus Bernhauer (as Fiestus (Antropiestus) andinus Bern- 

 hauer ) ( monobasic ) . 



Diagnosis. — Body broad, depressed, glabrous, shining; head witli 

 impressions on vertex; eyes well developed but not prominent, an- 

 tennae elongate, segments 4 to 10 pubescent; mandibles dentate; last 

 segment of maxillary palpus longer than the third, labial palpi short, 

 filiform; gula narrow, elongate; pronotum quadrate; prosternum not 

 exceedingly elongate; anterior coxae globose or transverse, not \)yo- 

 jecting; anterior tibiae dentate externally; elytra generally striate 

 (always in our species), not extending beyond metasternum poste- 



