122 ME. D. SHAEP ON SOME 



Tbionijs opacus. (Plate VI. fig. 4.) 

 Trionus opacus, Sharp, Japanese Colydiidce, ante, p. 70. 

 Dikoya ; ten specimens. 



The individuals are larger in Ceylon tlian those found in 

 Japan ; but I can find no good evidence of any specific distinction. 



Xtjthia paballela. (Plate YI. fig. 5.) 



Xuthia parallela. Sharp, Japanese Colydiidce, ante, p. 70- 



Point de Galle and Dikoya ; four examples. 



DiTOMA AKGUSTULA. 



Ditoma angustula, Motsch. Bull. Mosc. ii. p. 60] . 



Although this may possibly be a species of Xuthia, the de- 

 scription does not agree with X. parallela, and the insect is 

 probably unknown to me. 



AtTLOirGSOMA TENEBEIOIDES. 



Aulonosoma tenebrioides, Motsch, Etud. Ent. 1858, p. 44. 



Unknown to me ; although the author states that it belongs 

 to the " Colydiens," I expect it will not prove to be really a 

 member of the Colydiidae. 



Itheis ocitlata, n. sp. 



Rufo-ferruginea, angusta, parallela, parum convexa, opaca, prothorace 

 elytrisque costatis. Long. 2| millim. 



Antennae short, with broad three-jointed club. Head with 

 large and prominent eyes, and with a carina on the inner side 

 of each eye. Thorax a little narrower than the elytra, longer than 

 broad, very slightly narrowed behind, and very slightly curved at 

 the sides, indeed almost straight, except that the front angles 

 are rounded and depressed ; the surface quite dull and rough, 

 but not distinctly sculptured, with two longitudinal elevations 

 along the middle ; these are rather widely separated, and the 

 interval between them is somewhat depressed ; they do not ex- 

 tend quite to the base, but just inside each, and so close as to 

 appear a prolongation, is a short elevation reaching to the 

 base ; midway between the lateral margin and the costa described 

 there is another costa extending the whole length of the thorax. 

 Elytra with the alternate interstices raised so as to form on each 

 four fine costse in addition to the raised suture ; this latter 

 becomes bifid in front near the scutellum ; the intervals are 

 entirely occupied by very densely placed coarse punctures. 



