RHYTIDODEEA. 



less sharply angulate at the apex. Prothorax rugose, rounded at 

 the sides, constricted and transversely grooved near base and apex. 

 Elytra more or less parallel-sided, obliquely truncate or subtruncate 

 at the apex and armed or not with teeth or spines. Acetabula of 

 front coxae feebly or not at all angulate on the outer side, closed 

 posteriorly ; intercoxal process raised and rather narrow in the 

 middle, gradually sloped and expanded towards the end. Legs 

 moderately long; the hind femora hardly extended past the third 

 abdominal segment in the d 1 and the second in the $ ; first joint 

 of hind tarsus shorter than the next two united. 



In most species of this genus, including all the Indian ones, the 

 pubescence on the elytra is somewhat characteristic in its colour 

 and distribution : it is partly tawny, partly grey, sparser on some 

 parts and condensed on others, with a tendency to form more or 

 less regular longitudinal or transverse series of linear, oblong or 

 quadrate spots. 



150. Ehytidodera robusta, Gahan, A. M. N. H. (6) vii, p. 34 (1891). 



o . Dark brown, with the elytra reddish brown ; head and 

 prothorax rather densely covered with tawny pubescence ; elytra 

 with a mixed pubescence, partly tawny and partly ashy-grey in 

 colour, denser on some parts, sparser 

 on others ; the grey pubescence forms 

 series of ill-defined oblong or quadrate 

 spots on the disc, and is more irregul: rly 

 diffused on the sides. Head with a 

 slightly raised median carina on the 

 vertex. Antennae robust, extended 

 very little past the middle of the 

 elytra ; first joint not reaching past 

 the hind border of the eye ; third and 

 fourth thickened and subnodose at the 

 apex ; third longer than the fourth, but 

 scarcely as long as the first ; fifth to 

 tenth compressed in front and angulate 

 at the apex. Prothorax marked with 

 two transverse grooves near the apex, 

 and a strongly sinuous groove near the 

 base ; the disc and sides very strongly 

 and irregularly rugose ; each side with an irregular tubercle close 

 to the front margin, the disc with two just before the middle; 

 the tops of the ridges and tubercles glabrous and nitid. Elytra 

 rounded externally at the apex; each subsinuate near the suture 

 armed at the suture with a distinct spine ; the apical margin 

 obscured by a fringe of tawny hairs. Body beneath and legs 

 covered with pubescence of a prevailing yellowish-white tint, but 

 more or less distinctly tawny in places. Hind femora not extend- 

 ing past the hind border of the second abdominal segment. 

 Length 31-34 ; breadth 8-9 mm. 

 Hub. Bombay; Bangalore. 



L2 



Fig. SS.Rhytidodera 

 robusta, Gahan. X f. 



