On a new Genus of Heteromerous Coleoptera. 367 
165. Xylophaga dorsalis, Turton. 
Wood dredged at Trondhjem which had been bored by 
this species. 
[To be continued, | 
EXPLANATION OF PLATE XVI. 
Fig. 1. Ukko Turtoni, var. brevis, Norman, nat. size. 
Fig. 2. Ukko Turtoni, var. tumida, Norman, nat. size; the lip much 
broken below. 
Fig. 3. Ukko schantaricus, Middendortt, nat. size; specimen from the 
North Pacific. 
Fig. 4. Sipho gracilis, var. glaber, Verkruzen, dwarf form, nat. size. 
Fig. 4a. Apical whorls of the last, to show the rudely coiled nucleus. 
Fig. 5. Sipho propinquus, Alder, var. from the Kattegat, nat. size, to 
show its close approximation in form to fig. 4. 
Fig. 5a, Apical whorls of the last, to show the regularly coiled nucleus. 
LIV.—On a new Genus of Heteromerous Coleoptera belonging 
to the Family Lagriide, from Tasmania. By G. C. 
CHAMPION, F.Z.S8. 
SIRRHAS, gen. nov. 
Menium small, strongly transverse, trapezoidal, almost 
smooth, flat, the maxilla exposed at the base; mandibles 
bifid at the tip ; labrum strongly transverse, prominent, sepa- 
rated from the epistoma by a coriaceous space ; head rather 
large, moderately broad, exserted, very little narrowed behind, 
the epistoma very broad, short, depressed, and confounded 
with the front, the antennary orbits short and teebly raised, 
not projecting.over the points of insertion of the antenne; the 
eyes large, moderately prominent, widely separated, somewhat 
distant trom the base of the head; apical joint of the maxil- 
lary palpi stout, triangular, the outer side rounded and a 
little longer than the imner or apical sides; antenne very 
elongate, slender (the first joint excepted), joints 1 to 8 
sparsely punctured, shining, 9 to 11 densely punctured, 
opaque, 2 to 8 cylindrical, each abruptly thickened at its 
distal end, 2short, 3 exceedingly long, nearly four times as long 
as 2, 4 about half the length of 3, 4 to 11 subequal in length, 
9 to 11 a little stouter than 8 and more gradually thickened, 
11 subacuminate at the tip; prothorax transversely cordate, 
much wider than the head, expanded and sharply margined 
