CLYSTER. 



293 



Genus CLYSTER. 

 Clyster, Arrow, Trans. Ent. Soc. Lond. 1908, p. 330. 



TrPE, Scarabceus itys, Oliv. (Malayan Eegion). 



Range. Burma ; Malay Peninsula ; Java ; Borneo, etc. 



Form cylindrical. Clypeus produced and truncate in front, the 

 frontal suture bearing a short recurved horn in the male and two 

 tubercles in the female. Mandibles straight at the sides and blunt 

 in front, not produced beyond the clypeus. Front tibia armed 

 with three strong teeth and secondary denticles ; middle and hind 

 tibiae compressed and spinose, digitated at the end. Tarsi moder- 

 ately slender, the front ones greatly thickened in the male, with 

 the inner claw very broad and cleft at the end. Propygidium 

 rather produced behind, with almost the whole median part finely 

 striated. 



The typical species, Cluster itys, Oliv., although recorded as 

 Indian in the Munich Catalogue of Coleoptera, appears to be really 

 confined to the Malayan Eegion and is therefore not included here. 



264. Clyster retusus. 



Clyster retusus, Arroiv,^ Trans. Ent. Soc. Lond. 1908, p. 330. 



Black or piceous, elongate and rather convex. The Jieacl is 

 coarsely rugose, narrowly produced in front, Avith the anterior 

 edge nearly straight and "slightly reflexed, and the angles scarcely 

 rounded. The prothorax is not much shorter than its width, 



Fig. 68.— Clyster retusus, male (natural size) and outline of female, 



with the sides gently and uniformly curved, narrowed in front, 

 with the anterior angles acute and the posterior ones rounded ; it 

 is smooth in the middle but there are large scattered punctures at 

 the sides. The scutellum bears a few suiall punctures, sometimes 

 forming an angulate line. The elytra are closely punctured, the 

 punctures forming four pairs of lines upon each and a single line 

 bordering the suture, and the intervals are closely and irregularly 

 punctured. The proinjgidium is gently produced in the middle and 

 the whole median part covered with fine but broken striae. ""' * 



The 



