254 BULLETIN 18 2, UNITED STATES NATIONAL MUSEUM 



pimctulate and pubescent. Male^ seventh sternite with two feeble 

 rounded emarginations separated by a large triangular lobe, each 

 emargination interrupted by a protruding angulate process, the 

 median lobe fimbriate posteriorly; eighth sternite deeply triangularly 

 emarginate. Female^ sternites unmodified. Length, 6 to 7 mm. 



Type locality. — St. Vincent, Leeward side. Of ohscvrior, Grenada, 

 Chantilly Estate, Windward side. 



Types. — In the British Museum (for both names). 



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



St. Vincent: (Cameron, 1913; Cameron collection; United States National 



Museum). 

 Grenada: (Cameron, 1913, as oiscurior; Cameron collection). 



SpeeiTnens examined. — I have seen 19 examples (including the two 

 types) in the British Museum, 11 in the collection of Dr. Cameron, 

 and 6 (including one cotype) in the United States National Museum. 

 The last were received from the original series by exchange. 



Remarks. — I was unable to distinguish the types of ohscurior and 

 conifer and believe them to be the same. The male characters are 

 much more complex than in any other of our species. 



I am unable to verify the statement made by Dr. Cameron that 

 the triangular lobe of the seventh abdominal sternite of the male 

 is emarginate at the apex. The surface of the lobe is slightly concave 

 throughout but the apical margin is not distinctly emarginate. 



I find no record of its habits. 



4. ADEROCHARIS SUTURALIS, new species 



Description. — Piceous to rufous, pronotum, elytra, and abdomen a 

 little more rufous, elytra with margin generally rufescent or rufo- 

 testaceous. Head feebly emarginate at base, angles prominent; eyes 

 small, at about one-half more than their length from base; gular 

 sutures different in the sexes; not normally punctured but with mod- 

 erately dense tuberculi with a minute puncture and fine hair at top 

 of each; with irregular ground sculpture on base only. Pronotv/m 

 with distinct but indefinitely smooth midline; with tuberculi as on 

 head but stronger; without ground sculpture. Elytra with tuberculi 

 as on pronotum but with pubescence more evident; without ground 

 sculpture. Abdomen very minutely and very densely punctulate and 

 pubescent. Male., gular sutures united throughout from small tri- 

 angular submentum; seventh abdominal sternite with four small 

 triangular processes separated by three rounded emarginations, the 

 middle one a little wider than deep, the outer pair as deep as wide; 

 eighth sternite very broadly, shallowly, and evenly emarginate. 

 Female., gular sutures not united, moderately converging from sub- 

 mentum to base; abdominal sternites not modified. Length, 5 to 

 6V^ mm. 



