830 Mr. G. J. Arrow on a Contribution to the 



according to tlic Lacordaircan system the digitate hind 

 tibiu' relegate tliis to another section, it is really a transi- 

 tion forni nearly allied to Jhtcnmijchns, and it is necessary 

 to form another new genus for it. 



Clyster, n. gen. 



Form cylindrical. Clyi>eus i.roduced 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 jiroduied beyond the clypeus. Front tibiic armed 

 with three strong teeth and secondary denticles : middle and hind 

 tibite compressed and spinose, digitated at the end. Tarsi moderately 

 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. 



Type. Stypotrupes Itys, Oliv. (S. Ajax, ¥. = Dirho- 

 dontiis Bcnhcni, Nonf.) 



A second species of this genus is here described :— 



Clyster rdusiis, sp. n. 

 Niger, nitidus, elongatus, convexns, capite rugoso, antice sat 

 anguste producto, truncato ; prothorace quam longitudinem parum 

 laliore, omnino marginato, latoribus valde curvatis, antice contractis, 

 angulis anterioribus acutis, pnsterioribus rotundatis ; scutello parum 

 punctate; elytris crebre et fortiter punctatis, lineis ((uatnor gemin- 

 atis discoidalibus aliaque suturali, interstitiis lateribusque fortiter 

 punctatis ; propygidio medio paulo producto, subtiliter transverse 

 strigoso, pygidio densissime punctato : 



(?, capitis cornu brevi, recto apice obtuso ; prothoracis basi et 

 dorso postice hevibus, parte antica excavata aut decliva, rugosa, 

 carinis obliquis duabus hcvibus divisa : 



$ , capite medio bituberculato ; prothorace antice paulo impresso, 

 rugoso. 



Long. 21-29 mm. Lat. max. 11-15 mm. 



Hah. Andaman Is.; Penang. 



Black or piceous, elongated and rather convex. The 

 head is coarsely rugose, narrowly produced in front, with 

 the anterior edge nearly straight and slightly reflcxed and 

 the angles scarcely rounded. The prothorax is not much 

 shorte?than its width, Avith the sides gently and uniformly 

 purved, narrowed in front, the anterior angles acute 



