Longicornia Maiayana. 235 



many very distinct forms have been conveniently but unnaturally 

 placed. M.James Thomson has since proposed nevv genera for a 

 few of these, and further on I shall have many more to describe. 

 Such genera may be, and often are, very difficult to limit, but they 

 exist as categories of species, and when not solely founded on tech- 

 nical characters, they are an advantage to the real student. Of 

 course to those who would fain pursue " the royal road" they are 

 simply a bore. Otarionomus is a very distinct genus, and, as its 

 author has pointed out, is very nearly related to Tricanmatus, and 

 this is still more evident since the discovery of Omocyrius. There 

 are certain discrepancies both between M. Thomson's descriptions 

 and my own original one and that here given ; my original speci- 

 men, however, has a very different look from one of the magnifi- 

 cent insects now before me, and from which 1 have drawn up the 

 present article. 



Otarionomus blattoides. (PI. XI. fig. 4.) 

 Monoliammus blattoides, Pascoe, Trans. Ent. Soc. ser. 2, iv. 48. 



O. niger, nitidus, vittis maculisque ochraceo- et albo-pubes- 

 centibus ornatus ; antennis cinereo-annulatis ; pedibus pube 

 cinerea tectis, 



Ilab. — Sarawak. 



Dark brown or black, sub-glabrous, shining, with ochraceous- 

 yellow and white pubescent spots and stripes, the intervals with 

 scattered vvhitish hairs ; head irregularly punctured, twoochraceous 

 stripes on the vertex, another behind each eye, and a band in 

 front passing beneath them and across the cheeks, the latter bor- 

 dered with white ; prothorax more transverse in the female, with 

 ochraceous stripes on the disk and sides corresponding to those on 

 the head and cheeks; scutellum triangular, with a pale ashy pile; 

 elytra finely punctured in oblique irregular rows, and covered with 

 numerous spots of ochraceous, intermixed with smaller spots 

 of white, the apex rounded but slightly produced at the suture ; 

 body beneath varied with a dull ochraceous and greyish pubes- 

 cence ; legs covered with a delicate ashy pile ; antennae black ; 

 ilie joints from the third to the eighth inclusive ashy, except at 

 their tips. 



Length 14 — 17 lines. 



Amesisa. 

 Caput parvum, antice sub-quadratum, tuberibus antenniferis 

 validissimis, fere ercctis et contiguis. Ocidi grosse granulati, 



