MONOGRAPH OF WEST INDIAN STAPHYLINTDAE 225 



Specimens examined. — I have seen only the 22 types. 



Remarks. — This species is not entirely satisfactory in the key. The 

 smooth areas of the head are often distinct but are not as regular as 

 in the species in the first half of couplet 9. It can be distinguished 

 from adamsoni and cubensis by the size of the median area of the 

 vertex, and from most other species by the unimpressed head. 



I have received no record of its habits. 



19. STENUS CUBENSIS Bernhauer 



Stcnus cubensis Beknhauer, 1910, p. 364. 



Stenus (Hypostenus) cubensis Bernhauer, Beknhauer and Schubekt, 1911, 



p. 173. 

 Hypostenus cubensis (Bernhauer) Leng and Mutchler, 1914, p. 404. 



Description. — Black with slight aeneous luster. Head not im- 

 pressed between the eyes but feebly elevated along midline, the 

 elevation narrowly and irregularly smooth and shining ; without other 

 smooth areas ; labrum broadly rounded ; punctures coarse but irregu- 

 lar and obscured by short hairs; without distinct ground sculpture. 

 Pronotum scarcely at all longer than wide, widest near middle ; sides 

 nearly straight in front and only very feebly emarginate behind; 

 punctures a little coarser than on the head but irregular, sometimes 

 with suggestion of sculpture on the intervals. Elytra one-half wider 

 than the pronotum, somewhat wider than long; humeral callus 

 moderate ; punctures a little coarser and sparser than on pronotum, of 

 irregular shape; without sculpture on the intervals. Ahdomen with 

 punctures similar to those on head, sparser apically; with distinct 

 ground sculpture on the two apical tergites. Male., eighth sternite 

 with a triangular emargination one-half deeper than wide; seventh 

 sternite scarcely emarginate posteriorly, flattened and with somewhat 

 dense and long pubescence. Length, 2% mm. 



2'ype locality. — Cuba, Habana. 



Types. — One male, presumably in the collection of Max Bernhauer. 



Records. — The following are the records known to me : 



Cuba: (Leng and Mutchler, 1914), Habana (Bernhauer, 1910), Soledad (Darling- 

 ton, in M.C.Z. and U.S.N.M.). 



Specimens examined. — I have seen three examples of this species 

 from the Museum of Comparative Zoology (of which one has been 

 deposited in the United States National Museum). 



Remarks. — This species was originally placed in the subgenus 

 Hypostenus. It is not strikingly different from adamsoni and others. 

 It appears to be distinguishable by the feeble development of the 

 smooth areas of the head and the distribution of the punctation. 



Ten other specimens which agree closely with this species (from 

 Soledad, Aguadores in Oriente, and Buenos Aires in the Trinidad 

 Mountains) differ principally in the size and shape of the emargina- 



