Astathes and allied Genera of Longicorn Goleoptera. 73 



Mus., iii, p. 7). Though Mr. Ritsema subsequently pointed 

 out (1. c. p. 82) that his species was founded upon the 

 male sex of Momisis segrota, he seems still later to 

 have altered his opinion in regard to the identity of the 

 two species, for in a list published in the ' Notes/ 

 vol. x, p. 253, he gives them as being distinct, referring 

 both, as well as two other species described by him, to the 

 genus Bacchisa. 



Bacchisa coronata, Pasc. — the type of Bacchisa — is, how- 

 ever, distinguished from all these species by characters 

 which seem to me to be of more than specific importance, 

 and I, therefore, retain Momisis as a distinct genus. The 

 two genera agree in general form, in sternal characters, 

 and in the fact that the male is furnished with tufts of 

 hairs on the sides and vertex of the head ; but they are 

 distinguishable as follows : 



Scape of the antennae scarcely reaching to the middle of the 

 prothorax, much shorter than the third joint ; tarsal claws very 

 feebly or not at all appendiculate at the base. — Bacchisa, Pasc. 



Scape of the antennae reaching beyond the base of the prothorax, 

 almost, or quite, as long as the second and third joints together ; 

 tarsal claws distinctly appendiculate in both sexes. — Momisis, Pasc. 



Momisis melanura, sp. n. (Plate IV, fig. 11.) 



<$ . Testaceous, with the antennae, the apical sixth of the elytra, 

 the abdomen and tarsi black. Head with a long tuft of tawny hairs 

 on the vertex between the antennae, another on each side placed 

 obliquely between the lower lobe of the eye and the antennary tuber, 

 and one smaller in front of each of the antennary tubers ; lower 

 part of the front with a concave shovel-like process, which projects 

 downwards in front of the mandibles ; upper part of front with a 

 sharp median ridge which is more strongly raised at its upper (or 

 posterior) end. Prothorax nearly parallel-sided, slightly narrowed 

 towards the base, clothed with a faint tawny pubescence, and without 

 tubercle or elevation on the disc. Elytra rather thickly punctured, 

 the punctures being tolerably large from the base to the middle, and 

 becoming gradually smaller and less distinct posteriorly ; clothed 

 with tawny pubescence and erect tawny setae on the testaceous part, 

 with black pubescence and setae on the apical black area. Antennae 

 twice as long as the body ; the first joint nearly equal in length to 

 the second and third together, fringed with long tawny hairs on 

 anterior side near the base, with shorter black hairs on both sides for 

 the greater part of its length ; third joint with long hairs on posterior 



