MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 167 



Types. — Holotype and 16 paratj-pes in the Museum of Comparative 

 Zoology, collected by N. A. Weber in 1935; also 8 paratypes in the 

 United States National Museum (No. 52491). 



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



Trinidad: Mayaro Bay (Weber, iu M.C.Z. and U.S.N.M.), La Ortinola Estate 

 in Maractis Valley (Weber, in M.C.Z. and U.S.N.M.), Melajo (Weber, in 

 M.C.Z. ), Tunapuna (Weber, in M.C.Z.), Rio Claro (Weber, in M.C.Z.), 

 Galeota Point (Weber, in M.C.Z. and U.S.N.M.). 



Specimens examined. — I have seen only the 25 types. 



Remarks. — This species is not strongly distinguished from cylin- 

 drus but can be readily separated when specimens of both are at hand. 

 N. minor is readily distinguishable by its coarse pronotal punctures, 

 and s-m-ifhi is easily told by its pronotal ground sculpture. 



I have received no record of the habits of this species. 



3. NEOTROCHUS CYLINDRUS (Erichson) 



Holotrochus cylindnis Ekichson, 1840, p. 75S. — Lacordaiue, 1854, p. 113. — 

 Sharp, 1887, p. 684. — Bei{nhauer and Schubert, 1911, p. 142. — Cameron, 

 1913b, p. 325.— Lencx and Mutchler, 1914, p. 404. 



Holotrochus cylindricus Wolcott, 1924, p. 78; 1936, p. 196 (misspelling). 



Description. — Piceous. Head with moderate punctures separated 

 by 2 to 4 times their diameter; with feeble ground sculpture in front; 

 antennal segments 6 to 10 transverse; labrum twice as wide as long, 

 arcuate in front. Pronotum one-fifth wider than long, one-fourth 

 wider than head ; sides evenly arcuate ; widest near middle ; with only 

 a trace of basal lateral depressions; disk with irregular punctures, 

 some coarse and some fine, rather sparsely arranged; without definite 

 ground sculpture. Elytra one-twentieth wider than pronotum, about 

 as long as wide, sides nearly straight, outer apical angles narrowly 

 rounded; rather coarsely coriaceous but impunctate. Metastermtm 

 smooth, not distinctly punctate. Abdomen very minutely punctate 

 and slightly coriaceous ; eighth sternite strongly lobed ; ninth sternite 

 not present ; ninth tergite truncate, angles feebly tuberculate. Sexes 

 not distinguished in the present material (it appears to be all 

 females). Length, 2i/2 ii^m- 



Type locality. — Puerto Rico. 



Types. — Either in Hope Museum, Oxford, or in the Zoologische 

 Museum, Berlin. 



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



Puerto Rico: (Erichson, 1840; Lacordaire, 1854; Leng and Mutchler, 1914; Wol- 

 cott, 1924, 1936). 



Grenada: (British Museum). 



Trinidad: Point Radix, Mayaro Bay (Weber, in M.C.Z. and U.S.N.M.), Basin 

 Hill Forest near Flanagin Town (Weber, in M.C.Z. and U.S.N.M.), base 

 of Gaieota Point (Weber, in M.C Z. and U.S.N.M.), Guepo Bay (Weber, in 

 MC.Z.). 



