76 MEMOIRS ON THE COLEOPTERA 







Last joint of the maxillary palpi differing but little sexually, never more 

 than recti-triangular in the male 15 



12 Base of the prothorax bisinuate, the basal angles acutely and pos- 

 teriorly prominent 13 



Base of the prothorax more or less conspicuously and broadly lobed, 

 becoming anteriorly oblique toward the sides, with the basal angles 

 obtuse, sometimes evident but never prominent 14 



13 Elytra coarsely clathrate in about three series on each, the lines of 

 separation scarcely at all costiform, the humeri obtusely rounded, 

 not reflexed; anterior parts small when compared with the hind body 

 as in Pelecyphorus, the prothorax sinuately constricted basally; 

 antennae with sparse thin hairs, silvery in the type. [Type Asida 

 clathrata Champ.] *Bothrasida 



Elytra having confused sculpture, with about three feeble ridges usually 

 discernible on each, the two inner ridges frequently geminate, espec- 

 ially in the male; humeri obtuse but distinct, not broadly rounded, 

 generally in great part covered by the thoracic angles; body more 

 parallel and with relatively larger anterior parts as a rule; antennae 

 herissate with stiff spinuliform dark hairs. [Type N. abstrusa 

 n. sp.] *Notiasida 



Elytra each with three very regular ridges or carinae, the inner carina 

 rarely becoming obsolete and the outer generally not attaining the 

 base; thoracic and sometimes also the elytral base fringed with dense 

 pale tomentum; body parallel or with the elytra but feebly inflated; 

 antennae as in Notiasida. [Type P. laciniata n. sp.] Parasida 



14 Body more or less large in size, elongate, convex and fusoid-cylindric 

 or broadening posteriorly, clean and never incrusted with earthy 

 matter, the mentum rather small as a rule though variable, usually 

 not attaining the sides of the buccal opening; antennae herissate 

 with stiff hairs; tarsi with short sparse spinules beneath; elytral 

 margin very variable, the surface smooth to costate. [Type E. 

 obovatus Lee.] Euschides 



15 Antennae unusually long, very gradually and evenly thickened to 

 the end of the tenth joint, the latter wholly spongiose at tip by 

 coalescence of the tomentose areas; anterior tibiae scarcely at all 

 prominent externally at tip, the tarsi spinulose beneath; elytra with 

 true cariniform costae though at the sides only. [Type Pelecyphorus 

 bifurcus Lee.] Heterasida 



Antennae more rapidly enlarged distally, the tenth joint with the usual 



two widely separated tomentose spots at tip 16 



1 6 Elytra with true costae, which are sharply elevated and cariniform, 

 confined however to the lateral part of the upper surface as in 

 Heterasida; body parallel to narrowly suboval, depressed on the 

 upper surface and with minute and inconspicuous hairs; anterior 

 tibiae not or scarcely serrulate externally, the outer angle moderately 

 to scarcely at all everted; antennae more or less slender, gradually 

 enlarged subapically through joints nine and ten; mentum strongly 

 transverse, in close contact with the sides of the buccal opening, 

 which are unusually short. [Type Pelecyphorus parallelus Lee.]. 



Asidina 



