346 Dr. David Sharp on some 



Rhantus tci'prohanicus, sp. nov. 



Anguste ovalis, nitidus, niger, supra testaceus ; elytris crebrius 

 nigro-irroratis vertice inter oculos protlioraceque disco nigro- 

 signatis ; elytris punctis seriatis conspicuis ; antennis pedibusquo 

 quatuor anterioribus testaceis. Long. 12 mm. 



Very similar to the widely distributed B. pulverosus, but of 

 narrower and more parallel form, and with the serial punctures on 

 the elytra very different, they being comparatively large and 

 distant, and much more conspicuous than the very numerous 

 minute punctures of which the series are composed in the well- 

 known B. pulverosus. The structure of the front feet of the male 

 is almost similar to that found in B. pulverosus, and there is 

 scarcely any difference in the sculpture of the sexes. 



Hadley and Bogawantalawa. Six specimens. 



Rhantus interclusus. 



Colymhetes interclusus, Walker, x\nn. & Mag. Nat. 

 Hist. (3), ii., p. 204. 



Ovatus, parum convexus, nitidus, nigricans; supra testaceus, 

 capitis signaturis, prothorace late in medio elytrorumque irrora- 

 tionibus nigris ; pedibus piceo-testaceis, posterioribus piceis. Long. 

 12 mm. 



Distinguished from B. taprobanicus by the whole of the middle 

 of the pronotum, from front to hind margin, being black ; the serial 

 punctures on the elytra are not so large, and the female has a 

 much more distinct reticulation — the meshes being larger as well 

 as more distinct — on the thorax and elytra. 



Hadley. One female example. This and Walker's 

 type in the British Museum are the only specimens of 

 the species I have seen. 



Hydaticus rhantoides. 



Hydaticus rhantoides, Sharp, Dyt., No. 1036, p. 664. 



Colombo ; three specimens of unusually small size and 

 narrow form. 



Hydaticus hihamatus. 



Hydaticus hihamatus, Aube, Spec. Gen. Hydroc, p. 174. 

 H. discindens and H.fractifer, Walk., Ann. & Mag. 

 Nat. Hist, (3),ii., p. 204. 



