NORTH AMERICAN BOSTRICHIDAE 103 



clothed with short, recumbent, whitish hairs; clypeus depressed at 

 middle along clypeal suture, more finely, and less densely punctate 

 than front of head, sparsely clothed with short, recumbent, whitish 

 hairs; clypeal suture distinct, strongly depressed at middle. 



Pronotum quadrate, widest at middle; sides broadly rounded 

 posteriorly, more strongly converging anteriorly, with a broad, unci- 

 form tooth at apical angles; posterior angles broadly rounded; an- 

 terior margin broadly, arcuately emarginate ; surface sparsely clothed 

 with short, erect, inconspicuous hairs on apical half, very finely, 

 sparsely punctate on each side at basal half, feebly, shallowly imbri- 

 cate-punctate at middle on basal half, densely, irregularly dentate on 

 apical half, the teeth broad, semierect, variable in size, and rasplike. 



Elytra at base subequal in width to pronotum at middle; sides 

 nearly parallel, conjointly broadly rounded at apices (obtusely angu- 

 late when viewed from above) ; surface glabrous on disk, sparsely 

 clothed with very short, inconspicuous hairs on apical declivity, rather 

 finely, densely, irregularly punctate on basal two-thirds; coarsely, 

 deeply punctate, and somewhat rugose on apical declivity ; apical de- 

 clivity with lateral submargins distinctly elevated, united laterally to 

 margins, obtusely rounded on tops, and curving inward to exterior 

 tubercles at anterior margin of declivity, the sutural margins broadly 

 elevated at middle and apex of declivity ; each elytron with three long, 

 costiform tubercles along anterior margin of apical declivity, the tu- 

 bercles obtusely rounded at apices. 



Body beneath finely, densely granulose, rather densely clothed with 

 rather short, recumbent, yellowish hairs, the hairs much longer at 

 apex of last visible abdominal sternite, which is broadly rounded at 

 apex. 



Female. — Differs from the male in having the tubercles on the front 

 of the head closer together, the pronotum feebly emarginate in front 

 and without an unciform tooth at the apical angles, and the spine at the 

 apex of the anterior tibia larger and more strongly curved. 



Length 3.5-6 mm., width 1.4r-2 mm. 



Type locality. — Of longicornis, Santo Domingo; type in the Paris 

 Museum. Of schwarzi, Capron, Fla., and Santo Domingo; types in 

 the Horn Collection in the Academy of Natural Sciences of Philadel- 

 phia. Of ? v u-fesce?is, Brazil ; location of type unknown to writer. 



Distribution. — This species is distributed throughout South and 

 Central America, Mexico, West Indies, and the southern part of Flor- 

 ida. Large series of specimens have been examined from all these 

 regions and from the following localities in the United States : 



Florida: Biscayne, May 11-29; Capron, April 25; and Key West, April (Hubbard 

 and Schwarz). Paradise Key, February and March (H. S. Barber and T. E. 

 Snyder). Vero Beach, October and November (J. R. Malleoli). 



Hosts. — Hubbard (1888) recorded the adults as boring into the 

 living trunks and branches of Rhus metophim, but was unable to find 

 larvae in these trees. He found the larvae and adults of this species 

 in the half-burned roots of Smilax. Zetek reports the adults abundant 

 in the pruned and girdled branches of avocada and guayaba in the 

 Canal Zone. Adults have been intercepted at New York in derris 

 roots from Ecuador, and at Port Arthur, Tex., in wooden boxes from 

 Cuba. 



