CHOLUS. 291 
CHOLUS. 
Cholus, Germar, Ins. Spec. Novee, p. 212 (1824); Schénherr, Gen. Cure. ii. p. 558 ; Lacordaire, 
Gen. Col. vii. p. 87; Pascoe, Journ. Linn. Soc., Zool. xi. p. 465, nota. 
Archarias, Lacordaire, loc. cit. p. 38. 
Polyderces, Schonherr, Gen. Cure. vii. 1, p. 15. 
Sternoxus, Chevrolat, Bull. Soc. Ent. Fr. 1879, p. xvi. 
A genus including a large number of species, forty-one being known to me from 
within our limits. Ina few of them the claw at or near the outer apical angle of the 
tibie is absent, but no value can be placed on this character for generic separation 
(as suspected by Lacordaire *), or upon the protuberant mesosternum, or the form of 
the scutellum. The femora are usually dentate, but in several species the anterior 
pair are unarmed, at least in the male. The specimens with a more rugose rostrum, 
which is always strongly curved and rarely differs in length in the two sexes, and a 
broadly, longitudinally depressed first ventral segment, are assumed to be males. 
a. Prosternum tuberculate between the anterior coxe . . . . . + + + «. Species 1. 
b. Prosternum not tuberculate between the anterior coxe. 
a’. Mesosternum protuberant between the intermediate coxe. (=STERNOXUS, 
Chevr.) 
a, All the femora dentate (anterior tibiz strongly ciliate at the apex in the 
3 of C.@qualis) . 6. 1 6 ee ee we ee we we +. Species 2-10. 
8’. Anterior femora unarmed (or at most with an almost obsolete tooth in 
the ? ), the others dentate ; anterior tibia (except in C. lewcostictus) 
strongly ciliate towards the apex inthe 6 . . . . . . . « . « Species 11-15. 
b’. Mesosternum not protuberant between the intermediate coxe. 
c’, Tibiee unguiculate at or near the outer apical angle (obsoletely so in 
C.morio). 6. 6 1 wee ee ew ee Le . . Species 16-37. 
d’. Tibize unarmed or with a very minute tooth at the outer apical angle . Species 38-41. 
1. Cholus tuberculifer, sp.n. (Tab. XV. figg. 4, 4a-c, 3.) 
Elongate-oval, black, moderately shining ; the prothorax with an irregular oblique vitta on each side of the disc 
and a small transverse space at the middle of the base, the elytra with numerous small scattered spots, 
and the sides of the body beneath, densely clothed with rounded ochreous or whitish scales, the head 
with a line of similarly coloured narrow scales between the eyes, the rest of the under surface sparsely 
squamose or pubescent, the vestiture of the legs whitish and piliform. Head rugosely punctate and 
feebly foveate between the eyes; rostrum stout, curved, of about the same length as the prothorax, in 
the ¢ sharply carinate and rugosely punctate to about the middle and sparsely punctate and shining 
thence to the apex, in the 2 smoother. Prothorax transverse, rounded at the sides, feebly constricted 
and much narrowed in front, closely granulate, and with a more or less distinct smooth median carina, 
Scutellum subcordate. lytra slightly wider than the prothorax, elongato-cordate, flattened on the 
disc, the basal margin raised; coarsely seriate-punctate, the punctures separated one from another by 
transverse rugs, which become granuliform towards the apex, the interstices narrow and granulate. 
* Gen. Col. vii. p. 41, nota, 
2PP2 
