168 BULLETIN 18 2, UNITED STATES NATIONAL MUSEUM 



Speciniens examined. — I have seen only the one female example in 

 the British Museum, which I was permitted to borrow for further 

 study. (See also below.) 



Remarks. — There is a distinct possibility that sinithi is a synonym 

 of this as mentioned under that species. This specimen appears to 

 fit Erichson's description and is at present the basis of our concep- 

 tion of the genus. 



Since the above was written I have seen a series of 11 examples 

 from 5 localities in Trinidad which seem to belong to this species. 

 I am not now able to compare them with the British Museum speci- 

 mens, but I find that they fit the description fairly well. Another 

 series from Trinidad is now described as new. 



I find no record of the habits of this species. 



4. NEOTROCHUS SMITHI (Cameron) 

 Holotrochus fi7nithi Cameron, 19136, p. 325. — Leng and Mutchlkr, 1917, p. 198. — 



SCHEERPELTZ. 1933, p. 1131. 



Description. — Rufopiceous. Head with moderately fine punctures 

 separated by two to four times their diameter; with fine ground 

 sculpture in front; antennal segments 6 to 11 transverse; labrum 

 three times as wide as long, not much rounded in front. Pronotmn 

 nearly one-fifth wider than long, three-eighths wider than head ; sides 

 evenly arcuate, widest at middle; without trace of basal lateral de- 

 pressions ; with rather fine punctures separated bj- three to five times 

 their diameter; with feeble scaly ground sculpture. Elytra equal in 

 width to pronotum, one-tenth wider than long; not punctate but 

 coriaceous. Metasteimum smooth, impunctate. Abdomen with 

 feeble ground sculpture but no distinct punctures., Male., eighth 

 sternite feebly lobed posteriorly, ninth sternite narrow but arcuate 

 at apex; lateral plates toothed at apex; ninth tergite truncate, angles 

 toothed. Female.^ eighth sternite rather strongly lobed posteriorly; 

 ninth sternite entirely absent; lateral plates large, triangular, and 

 bluntly toothed at apex; ninth tergite truncate with angles produced 

 in slender teeth. Length, 3% mm. 



Type locality. — St. Vincent, leeward side. 



Types. — One specimen labeled type in the British Museum, col- 

 lected by H. H. Smith. 



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



St. Vincent: (Cameron, 1913; Lenpr and Miitchler, 1917; British Museum). 

 Trinidad: Aripo Valley (Weber, in M.CZ. and U.S.N.M.). 



Specimens eocamined. — I have seen the 12 examples in the type series 

 in the British Museum and have borrowed 1 of these for further 

 study. In addition I have seen a series of 52 specimens from the 

 Museum of Comparative Zoology. 



