
entirel with a due asperate or 
 grater-like surface sometimes confined to the front half, and the joints. of ; 
.— the feet (arsi) are linear and not flattened out vy the broad fl fleshy pads - 
: gene rally possessed by wee ae the absence hese pads is, however, 
by no means universal among th Relig todas! 
The antenne are always geniculate, or elbowed, the first joint being | 
elongate and set at an angle to the succeeding joints; this will serve to 
distinguish them from the Med similar Bostrychide and th pees which | N 
also bore into manu wood, and are known as “ shot-borers.” 




















The genus Xyleborus. 
This s genus was Moe 4 in 1864 by Eichhoff from the old genus à 
Tomicus, and is distinguished by the following characters :— : 
Head globu lar, hidden under a rounded or cylindrical thorax, whose 
anterior half is densely asperate, or grater-like, the hinder half smooth - 
and finely punctured. 
Prothorax excised ventrally up to the anterior coxe. Tibi flattened, - 
dilated towards the apex with od uter edge rounded and serrate; the 
tarsi can be folded t up against t 
ly cylindrical, elytra caste in rows without a depressed line 
along side of suture. ae 
es much smaller than the females, of shorter and more con 
Mn Sey are wingless, and fertilise the females in the lant : 
aped bred. They are by far the rarer of the sex sexes, A 
, di about one in four. up to one in 30 or. 







varying from 
AOE Pn the species. 
The genus contains about 90 d seribed species, distributed o ver 
world: about 25 have been dibe from Central Atri and 
Brazil. 
f 
XYLEBORUS PERFORANS. 
T'omicus perforans, Woll. Cat. Col. Mad. 1857, p. 96. 
» Col. Hesperid. 1867, p. 113. ed 
Bostrychus testaceus, Walker Ann. Nat. Hist. ser. b HbA 
i A eborus affinis Bich, Berl. Zeit. 186751 p. 401. 
yl Rat. Tomicinorum, e, 1878, 
c eee Zimm. Syn. yn. Seol. 1868, p. Sp? 
3 _ Schwarz, Ent. A. IL p. 41. 






.? Bo strichus rug Fabr. Syst. Eleu euth., 1L p. 388, 20. 
Des cindy of. a Poe had iip Ta ali 
| grey 
low hairs. E m 
yellow ai l Mud, invisible from. mn bears | two rA black. eyes, con 
cave ion their anterior atus between which and the mouth are bay 
antenne, with an elongate tnl. doit, on which is set. 
the five-jointed shaft, carrying an oval ^p club with a “trun 
apex. 
The thotas. is ylindrical, half as as long. again a ‘broad, : slight 
narrowed at base, with he anterior edge strongly pedi , In the 
c is a rounded, irergiime transverse tubercle 
upper surface is 
irface is rough an sperato, behind iiis 


NE 
