240 NaTuRAL History BULLETIN. 
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alis. ‘The disk is very convex, middle fovea large, hidden by 
a bunch of long, convergent hairs, giving the appearance of a 
sharp-pointed tubercle; transverse sulcus very fine, lateral 
fovee small. /ytra equal in length to their width across 
the shoulders, which are not prominent; disk rather convex, 
base bifoveate, sutural lines parallel, converging in the pos- 
terior fourth, discal lines none, replaced by an ample but 
shallow basal impression. Addomen longer than the elytra, 
convex in both directions, border wider, retuse, the basal seg- 
ment shorter than the second or third, which are equal, longi- 
tudinally very convex and depressed at the base; no median 
basal tubercle visible. Legs long, the anterior trochanters of 
the male with a long, bluntly-pointed spine, anterior thighs 
with a small, sharp thorn on the basal, and a minute sharp 
tubercle on the second third. Posterior tibia spurred, tarsi 
with long hair on the sole. 
One specimen ¢. Williams, Arizona. H. F. Wickham. 
We have placed this species in Zyrus, but the form of the 
prothorax and head resembles more closely Hamotus 
batrisiordes while the antennz, palpi and locomotive organs are 
those of Tyrus, thus demonstrating the close affinity of these 
two genera. 
Hamotus, Audé. 
( Cercocerus, Motsch.) 
Pubescence loose, coarse, and long; head not constricted 
behind the frontal tubercles, eyes finely facetted. Elytra and 
abdomen very convex. Palpi with the second joint fusiform, 
third compressed subglobular, fourth elongate fusiform. 
Second and third tarsal joints equal, claws two, equal. 
H. BATRISIOIDEs, Lec. Umber brown, elongate, convex, 
polished pubescence long, coarse, yellow, not appressed; 
punctuation faint, irregular, punctures large. Length, 1.8 
mm. Plate VII., Fig. 22. 
flead as broad as long, very convex; eyes large moderately 
