NORTH AMERICAN BOSTRICHIDAE 107 



slightly expanded posteriorly, obtusely angulated at apices, which are 

 angularly separated; surface densely clothed with rather long, re- 

 cumbent whitish hairs posteriorly, the hairs short and inconspicuous 

 on basal half of disk, coarsely, densely punctate, the punctures shallow 

 on basal half, becoming coarser and deeper on apical declivity, but 

 impunctate along sutural margins behind teeth on declivity; apical 

 declivity with sutural striae deeply depressed on anterior part, the 

 sutural margins not strongly elevated but broadly expanded above 

 middle of declivity and armed with two small teeth, which are acute 

 at apices, slightly divergent, and separated at bases, the lateral margins 

 thickened and elevated into an erect, obtuse tubercle near sutural 

 angle; each elytron with a rather acute, semierect tubercle at middle 

 along lateral margin of apical declivity. 



Abdomen beneath rather coarsely, densely punctate, rather densely 

 clothed with moderately long, recumbent, whitish hairs; last visible 

 sternite triangularly emarginate at apex, with indistinct lateral 

 grooves and lateral pieces. 



Male. — Differs from the female in having the last visible abdominal 

 sternite rounded at the apex, and with distinct lateral grooves and 

 lateral pieces. 



Length 3.5-5.5 mm., width 1.2-2 mm. 



Type locality. — Texas, no definite locality. 



Type, allotype, and paratypes. — In the United States National Mu- 

 seum, No. 58316. 



Described from five specimens (one female type). The type was 

 collected by G. W. Belfrage; the allotype was collected on elm at 

 Uvalde, Tex., by W. F. Fiske ; one paratype labeled Texas, collected 

 by Mr. Fuller ; one paratype collected March 15 at Cypress Mills, Tex. ; 

 and one paratype from Texas, reared February 2, 1893, from fig 

 twigs. 



SCOBICIA BIDENTATA (Horn) 



Sinoocylon bidentatum Horn, 1878, Amer. Phil. Soc. Proc. 17 : 542, 544. 



Xylopertha bidentata Casey, 1898, N. Y. Ent. Soc. Jour. 6 : 67. 



Scobicia bidentata Leonard, 1928, N. Y. (Cornell) Agr. Expt. Sta. Mem. 101 : 415 ; 

 Lesne, 1938, in Junk (pub.), Coleopt. Cat., pt. 161, p. 57; Brimley, 1938, Insects 

 of North Carolina, p. 197; Anderson, 1939, Wash. Acad. Sci. Jour. 29 (9) : 

 391, figs. 36, 42 (larvae). 



Male. — Dark brown, base of pronotum reddish, elytra usually 

 reddish brown, sometimes yellowish toward base ; palpi, femora, and 

 tarsi yellowish brown. 



Head slightly convex, finely, densely punctate on front and clypeus, 

 with longitudinal, parallel costae on occiput, rather densely clothed 

 on front with very long, erect, brownish hairs, which are shorter at 

 middle behind clypeus ; clypeus flat, slightly depressed at middle along 

 posterior margin ; clypeal suture depressed at middle, obsolete at sides. 



Pronotum slightly wider than long, widest behind middle; sides 

 broadly rounded, more strongly converging anteriorty, with a small, 

 broad tooth at apical angles ; posterior angles broadly rounded ; sur- 

 face sparsely clothed with short, erect and recumbent, inconspicuous 

 hairs, with numerous very long, erect, whitish hairs along sides on 

 apical half, finely, very sparsely punctate on basal half, sparsely, 

 coarsely punctate at sides on apical half and at middle along anterior 

 margin, densely, irregularly dentate on apical half of disk, 1 the teeth 

 broad, semierect, variable in size, and rasplike. 



