BLAcKBURN AND SHARP—On some New Species and Genera of Coleoptera. 167 
ScrlopHAGuS (new generic name). 
The insect for which I propose this generic name has the appearance of a small, 
shining Alphitobius, but its tarsi are densely pubescent beneath. The mentum is 
extremely small, reduced to a small carinate shield haying only the size of the last 
joint of the maxillary palpus, and leaving all the parts of the mouth exposed ; the 
maxillary palpi are short and thick, their terminal joint broader, subsecuriform. 
The antennz are short and stout, with the basal joint concealed by the clypeus, and 
are incrassate from the middle to the extremity: eyes rather large, coarsely facetted ; 
clypeus broad in front, and slightly emarginate, leaving exposed the broad labrum. 
Prosternum furnished with a well-marked, narrow, horizontal process, projecting 
into the impressed mesosternum. Metasternum of moderate length ; tibice rather 
slender, not denticulate externally ; spurs small; tarsi rather slender, clothed be- 
neath with dense fine pubescence, penultimate joint simple; basal joint of the 
posterior elongate, about equal in length to the terminal joint. 
The clothing of the tarsi renders the position of the genus somewhat dubious, 
otherwise it appears allied to Alphitobius and other of the genera placed by Lacor- 
daire in the Ulomides. The insect for which it is proposed is the Heterophaga pan- 
danicola, Esch. (Plate v., f. 27). It occurs in the Radack chain, and in New Zealand 
(Coll. Murray) as well as in the Sandwich Islands. The name appears to be omitted 
from the Munich Catalogue of Coleoptera. Mz. C. O. Waterhouse informs me that, 
in the British Museum collection, this insect is also extant under the name Pachy- 
cerus domesticus, Mont., from New Caledonia ; but this does not affect the nomen- 
clature, as P. domesticus is subsequent in date to H. pandanicola, and the name 
Pachycerus is in prior use for another genus of Coleoptera. In the Munich 
Catalogue Pachycerus domesticus is placed in the genus Alphitobius. 
DES: 
LABETIS. 
Labetis tibialis, Wat.—As the description of Labetis tibialis, Waterh. (Vide 
E. M. M., vol. xv. p. 267), seems to be founded on a female—and I possess both 
sexes—it may be well for me to mention here the characters of the male. They 
are as follows :—The central portion of the apical ventral segment is occupied by 
a profound impression which is nearly as wide as long, and extends from near the 
base of the segment to its apex ; there is a lamella underneath all the,joints of the 
anterior, underneath the second, third, and fourth joints of the intermediate, and 
underneath the penultimate joint of the posterior tarsi; the antennz are slender 
and rather more than three-fourths the length of the body ; and the anterior tibie 
are wider than in the female, and have the external edge considerably more strongly 
produced at the apex. The length of the male specimen in my collection is 15 m.m., 
of the female 95 m.m. 
I obtained my pair of this insect by beating branches of trees on the mountains near Honolulu. 
AUS 18} 
TRANS. ROY. DUB. SOC., N.S. VOL. III. 2A 
