1866.] 24& 



« 



Jh'icliopteryx Jansoni, n. s. 

 L. c. /s lin. Oblonga, fere cylindrica, sub-parallela, aterrima, pilis 

 brevibus argenteis parcissime vestita ; capita brevi, latissimo ; pronoto 

 modico, vix dilatato, tuberculis inodicis ordiuibus remotis irregulariter 

 sinuatis dispositis, interstitiis nitidis fortiter alutaceis ornato ; angiilis 

 posticis aliquantum productis, elytris oblougis; antennis piceo-testaceis, 

 pedibus Isete flavis. 



Head — large, very wide and sliining; eyes moderate, rather prominent ; 

 antennae rather long, pitchy-testaceous. 



Tliorax — short, scarcely dilated posteriorly, with the sides somewhat 

 rounded, and widely margined ; ornamented with tubercles, 

 arranged in remote irregularly sinuated rows, with the interstices 

 deeply alutaceous, and very shining ; posterior margin not de- 

 pressed, sinuated, yellow towards the extremities, with the angles 

 slightly produced. 



Scutellicm — moderate, triangular, acuminate, deeply and irregularly 

 asperate. 



Elytra — long, not attenuated, with the sides nearly straight, but 

 slightly contracted at the apex ; rather longer, but not narrower, 

 than the head and thorax united ; deeply asperate in remote 

 sinuated rows, with the apex depressed, rather paler, and slightly 

 rounded. 



Abdomen — black, rather long. 



Legs — moderate, bright yellow. 



Under parts — black, with the mouth, coxse, and apex of the metasternum 

 yellow. 

 T. Jansoni may be known by its sub-parallel, cylindric shape, very 



wide head, deep black colour, and superficial sculpture, especially of the 



elytra. 



I found one example of this species near Gumley some years ago ; 



since then, I have often searched for it iu vain. 



Its characters are so distinct and striking, even without careful 



examination, that it is impossible to associate it with any known species. 



In shape it resembles the Ceylon T. invisihilis, Nietner, more than any 



other ; but it is readily distinguished from all by its cylindi'ic form 



and very black colour. 



Among the large number of undescribed species of Trichopterygidce 



now in my possession, I hope to commemorate the names of all those 



entomologists who have exerted themselves in the pursuit of these 



atoms, cither in our own or other coiiutries. 



