330 Mr. G. J. Arrow on a Contrihvtion to the 



according to the Lacordairean S37stem the digitate hind 

 tibioe relegate this to another section, it is really a transi- 

 tion form nearly allied to Hctcronyclmis, and it is necessary 

 to form another new genus for it. 



Clyster, n. gen. 



Form cylindrical. Clypens 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 teetli and secondary denticles : middle and hind 

 tibife 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. Stypotni.pes Itys, Oliv. {S. Aj'ax, ¥. = Dicho- 

 donfus Picnl-cni, Nonf.) 



A second species of this genus is here described : — • 



Clyster rctusus, sp. n. 



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

 angnste j^roducto, truncato ; prothorace quam longitudinem parum 

 latiore, omnino marginato, lateribus valde curvatis, antice contractis, 

 angulis anterioribus acutis, posterioribus rotundatis ; scutello parum 

 punctate ; elytris crebre et fortiter punctatis, lineis quatuor gemin- 

 atis discoidalibus aliaqne suturali, interstitiis lateribusque fortiter 

 punctatis ; propygidio medio paulo producto, subtiliter transverse 

 strigoso, pygidio densissime punctato : 



(^, capitis cormi brevi, recto apice obtuso ; prothoracis basi et 

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

 carinis oljliquis duabus lajvibus divisa : 



5 , cajiite medio bituberculato ; prothorace antice paulo impresso, 

 rugoso. ! ^ 



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



Ilab. 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 reflexed and 

 the angles scarcely rounded. The prothorax is not much 

 shorter than its width, with the sides gently and uniformly 

 gviTved, narrowed ip |i'ont, the anterior angles ac\ite 



