NORTH AMERICAN BOSTRICHIDAE 119 



callosity nearly impunctate; apical declivity with lateral submargins 

 very strongly elevated, especially toward apices, extending to outer 

 tubercles, acutely, angularly separated at sutural angles, the sutural 

 margins feebly, broadly elevated; each elytron with two obsolete, lon- 

 gitudinal costae. and three large, acute tubercles along anterior margin 

 of apical declivity, the tubercles spinose at apices, and outer one 

 slightly arcuate. 



Abdomen beneath finely, densely punctate, rather densely clothed 

 with moderately long, recumbent, yellowish hairs, with a few longer 

 hairs on last visible sternite, which is broadly rounded at apex. 



Female. — There are scarcely any external differences in the sexes. 

 The tubercles on the front of the head are usually larger in the female 

 than in the male, the front of the head is more densely pubescent, and 

 the pubescence is longer on the first antennal segment. 



Length -±-6 mm., width 1.5-2 mm. 



Type locality. — Rioja Province, Argentine Republic; present loca- 

 tion of type unknown to writer. 



Distribution. — This species is recorded in the literature from the 

 Argentine Republic, Brazil, Bolivia, Paraguay, and Uruguay. Speci- 

 mens have been intercepted at Miami Beach, Fla., February 12, 1943, on 

 an aircraft arriving from Buenos Aires, Argentine Republic. So far 

 as known, it is not established in the United States. 



Hosts. — Nothing is recorded on the habits of this species. 



Genus XYLOMEIRA Lesne 



Xylomeira Lesne, 1901, Soc. Ent. de France Ann. (1900) 69 : 475, 502-504; 1938, in 

 Junk (pub.), Coleopt. Cat., pt. 161, p. 55. 



Head deeply inserted in prothorax, not visible from above ; clypeus 

 strongly transverse, truncate in front, with a small tooth on each side 

 at base of labrum ; labrum transverse, arcuately emarginate or truncate 

 and densely ciliate with long yellow hairs in front ; mandibles more or 

 less attenuate toward apices; eyes very large, oval, globose, strongly 

 projecting. Antenna rather long, 10-segmented ; first and second seg- 

 ments robust, first broad, flattened, clothed with long, yellow hairs, 

 second elongate, much shorter than first ; third to seventh small, trans- 

 verse, gradually wider toward seventh, the segments united shorter 

 than first segment of club ; last three segments forming a loose, com- 

 pressed club, densely clothed with short, erect hairs, each with two 

 more or less distinct sensory depressions on each surface, eighth and 

 ninth broadly oblong or oval, tenth narrowly oblong, longer than 

 ninth. Pronotum stongly convex, arcuately emarginate or truncate 

 in front, truncate at base, dentate anteriorly, not transversely de- 

 pressed behind anterior margin; sides not margined. Scutellum 

 rather large, triangular, subtruncate at apex. Elytra strongly convex, 

 each elytron with three costiform tubercles on anterior margin of 

 apical declivity, the tubercles obtuse at apices. Legs short, subequal 

 in length; tibiae expanded toward apices, longitudinally carinate, 

 dentate on exterior margins, each with a large, arcuate spine at apex; 

 posterior tarsi as long as, or longer than tibiae, apical segment of each 

 shorter than preceding four segments united. Anterior coxae con- 

 tiguous. Middle coxae narrowly separated. Intercoxal process of 

 abdomen lamellate. Body elongate, cylindrical. 



Genotype. — Apate torquata Fabricius. (Monobasic.) 



