486 Mr. D. Sharp's descriptions of iicxc genera 



appearance of being forked in front. Elytra much nar- 

 rowed at the shoulders, distinctly longer than the thorax, 

 each with a sutural and a discoidal stria, and with a fcAV 

 short scale-like hairs, their depressed extremity densely 

 set with such hairs. Hind body thickly margined, rather 

 short. 



West Australia. 



This species much resembles the insect described by 

 King as Tmesiphorus vernnlis, but is smaller, and has 

 much shorter antenna, and the hairs of the upper surface 

 are much fewer, coarser and more scale-like, and its eyes 

 are much smaller. 



Ctenistes simplex, n. sp. Rufescens, antennis brevibus, 

 prothorace leviter transverso, elytris thorace plus dimidio 

 longioribus. Long. corp. 1^ mm. 



Antennae short, joints 3 — 9 small and differing little 

 from one another ; the 8th and 9th not broader, but rather 

 shorter than the 7th; 10th joint distinctly broader than 

 9th, not so long as broad; 11th joint thick, more than 

 twice as long, and nearly twice as broad as the 10th. 

 Head small, with the tubercles in front very short. 

 Thorax much narrower than the elytra, not quite so long 

 as broad, the sides but little dilated in the middle ; the 

 central fovea rather large, the lateral one indistinct. 

 Elytra considerably narrowed at the shoulders, about one 

 and a half times as long as the thorax. 



Victoria : sent by Henry Edwards, Esq. I am not 

 sure of the sex of the three individuals I have of this 

 species. The C simplex is closely allied to C. impressus, 

 and is about the same size as that species, but is broader 

 behind. Independently of the structure of the antennse 

 (the differences of which may be sexual), the two species 

 may be distinguished by the shorter thorax of C. sim- 

 plex and its simple, well-defined central fovea. C. sim- 

 plex is also closely allied to Tmesiphorus vernalis, King, 

 but is shorter, has the eyes smaller, and the thorax more 

 transverse. 



Ctenistes parvus, n. sp. Castaneus, nitidus, angustus, 

 antennis sat elongatis, prothorace baud transverso, lateribus 

 baud dilatatis. Long. corp. vix 1^ mm. 



Antennae rather long, and for this genus slender, joints 

 .3 — 7 small, slender and bead-like; joints 8 — 10 distinctly. 



