208 CURCULIOXID.E. 



iu the (5 • Legs stout, elongate ; the femora unarmed, the pos- 

 terior pair not reaching the apex of the elytra ; the tibiae almost 

 straight, the two front ])airs produced internally at the apex, the 

 posterior pair with the corbels strongly enclosed; tarsi spongy 

 beneath, joint 2 transverse and trapeziform, 3 broadly bilobate, 

 4 as long as 2 + 3, the claws connate. 



Range. Ceylon, ludia, Burma, Siam, Malay Peninsula, Sumatra, 

 Java, Borneo, Philippines, China and Japan. 



In some sections of this large genus the species are very difficult 

 to discriminate with certainty, as is frequently the case with 

 wino-less CuRCULio>'iDiE. In most cases the male genitalia appear 

 to offer a safe criterion, but in a few instances these organs 

 present slight differences, the significance of which it has been 

 impossible to determine owing to lack of material and inade- 

 quate locality labels. Some of the characters used in the key 

 may appear ambiguous for certain individual specimens. Where 

 such is likely to be the case I have not hesitated to place the same 

 species in both of the two opposing categories, which it is hoped 

 will facilitate identification. 



It may be observed that there is sometimes a discrepancy in 

 the statements of Faust and myself as to the relative lengths of 

 the two basal joints of tlie fuiiicle. This is due to the fact that 

 when the funicle is lield straight out in the same plane witli the 

 scape the base of the first joint is more or less hidden from above 

 hv the apex of the scape. The real lengtli of the first joint can 

 then only be seen from beneath, or the funicle must be bent down 

 at right angles to the scape. An examination of Faust's types 

 shows tliat'in several instances he has been misled in this way. 

 Finally, considerable use has been made in the key of the 

 characters afforded by the relative proportions of the antennal 

 joints. It must therefore be mentioned that, unless otherwise 

 stated, the descriptions apply only to perfect specimens; for the 

 scaling on these organs is often so thick that when it is rubbed 

 off a very considerable difference is produced in the relative length 

 and breadth of the joints. 



Key to the Siyecies. 



1 (2) Elytra with a very large boss-like tu- 



bercle at the top of the declivity on 



interval 3 bicuspis, sp. u., p. 215. 



2 (1) Elytra without any large tubercles at 



the top of the declivity. 



3 (4) Eostrum with the gena^ produced iu 



front beyond the mandibles (espe- 

 cially iu'the J) ; each elytron with 

 a sniall, sharply conical tubercle on 

 the suture at some distance above the 

 apex (juttntus, Boh., p. 21 7. 



4 (3) Genajnot produced in front : elytra not 



bituberculate behind, or, if so, with 



