58 Mr. C. J. Gahan on new Species of Longicornia 



this respect the species differs slightly from the more typical 

 species of both Coptops and Mesosa. Its nearest ally seems 

 to be an unclescribed species from Java (A nancy f us binotatus, 

 Chevr., MS.). 



Thylactus simulans } n. sp. 



XylorrMzce adustce simillimus, sed differt pro thoracis lateribus spi- 

 nosis ; anfcennarum articulis a quarto ad decimum apicibus iutus 

 acute angulatis. 



Hab. N. India (Darjeeling). 



Clothed with a thick silky pubescence of a dark brown 

 colour varied with pale fulvous yellow. On the elytra the 

 brown is predominant at the base, the pale yellow at the sides, 

 while posteriorly the colours are so mixed as to present a 

 streaked appearance. Head with prominent antennal 

 tubercles, with the brow between them broadly enough and 

 strongly concave. Prothorax with a strong and rather obtuse 

 spine on the middle of each side, with a paler yellowish line 

 along the middle of the disk, on each side of which some 

 strong punctures are visible. Elytra strongly and sparsely 

 punctured near the base, with the punctures almost concealed 

 by the pubescence ; rounded externally at the apex, with each 

 at the suture prolonged into a broad blunt process. Legs 

 short and stout, with the tarsi about equal in length to the 

 tibiae. Antennae ( ? ?) reaching to about two thirds the 

 length of the elytra, with the scape and third joint somewhat 

 thickened at their apices ; with each joint from the fourth 

 distinctly angular on the inner side at its apex. 



In its size, colour, and style of marking this species bears 

 a remarkable resemblance to Xylorrkiza adusta, Wied., but 

 its characters show it to be generically distinct. Unless a 

 special genus is to be formed for its reception, I do not see 

 that it can be better placed than in the genus Thylactus of 

 Pascoe. The form of its elytra at the apex is unusual for 

 this genus and agrees closely enough with that of X. adusta. 



There is but one specimen in the British Museum collec- 

 tion. 



The following species, also from N. India, agrees better 

 with the characters of Thylactus, and has the general form 

 of T. longipennisj Pasc. 



Thylactus dorsalis, n. sp. (PI. VII. fig. 4.) 

 Albo-flavescente dense pubesoens; capitis fronte nigra, sparsim 



