124 



the thorax. Head small, not advanced beyond the hood of the thorax ; 

 the mouth furnished with a fringe of yellowish hairs ; antennae a 

 dusky red, the three terminal joints much larger than the others, and 

 bead-like. The thorax quadrate in outline, suddenly bent down in 

 front and somewhat so behind, the anterior half, especially the frontal 

 •declivity, is covered with spine-like points which next the lateral 

 front angles become recurved spines. Elytra shagreened or granu- 

 lated, paler than the thorax, the shoulders with an external smooth 

 prominence; the tips suddenly bent or curved downward, at which 

 point (in the males) a sharp spine extends backwards from the wing- 

 ■case (in the females), a smooth tubercle. The underside a very dark 

 brown. 



Length nearly three-eighths of an inch; width one-eighth of an 

 inch. 



BOSTEICIIT'S (Sinoxlon) Basillare, Say 

 a, larva; b, pupa; c, beetle. 



B. (Sinoxylon) basilaris — Say. 



Has the body black ; antenna? 

 and pulpi (or mouth feelers) red 

 or reddish ; the thorax is spined in 

 front somewhat as bicaudatus with the 

 angles rounded ; the wing-cases 

 marked with large dense punctures, 

 which are more dilated toward the 

 tip, a large red spot on the base, each 

 . wing-case has three spines at the tip ; 

 the wings black; not punctured be- 

 neath. Length one-fifth of an inch. 



This species is not found as often in the perfect state as the preced- 

 ing, yet it is probably as injurious; but its depredations are done in 

 the larval instead of the perfect state. Professor Riley, who has 

 traced it through its transformations, informs us that the larva is a 

 yellowish, wrinkled, arched grub with a very small head; hav- 

 ing the first three joints swollen and furnished with six small legs. 

 It has been found boring into the heart of grape steins; it also bores 

 into the trunk of the shag-bark hickory, and the trunk and main 

 branches of apple and peach trees. 



No remedy has been suggested for this species, except burning the 

 infested wood. 



Spec. char. Imago. — Antenna* rather short and slender, terminating 

 in three enlarged serrate joints ; tarsi apparently four-jointed ; thorax 

 sharply tuberculated in front, concealing the head beneath the hood- 

 like extension ; quadrate in form ; separated from the elytra by a very 

 short peduncle. Body black; eyes prominent; antenna) and palpi 

 redd'sh ; scutellum minute and round. Elytra with large, dense 

 punctures, which are more dilated toward the tip ; a large reddish spot 

 on the middle next the base; tip refuse, with three teeth at the outer 

 corner ; wings black ; tibia* and tarsi dusky-red. Length about one- 

 fifth of an inch. 



Larva. — Color yellowish. Body smooth, arched and wrinkled trans- 

 versely. Thoracic joints much enlarged, the prothoracic being slightly 



