532 ^li'- I'- Cameron on new 



p. 358), is a different species from the argentatum of Sausaure's 

 Revision of the East Indian Odynerides (Stett. ent. Zeit. xxiii. 

 pp. 129 and 207). It is probably a form of R. benf/alense, 

 i^auss., which = i?. argentatum^ Saussine, Etudes, i. p. 115, 

 non Fabr., sec. Sauss. Stett. ent. Zcit. /. c. p. 191. Col. Bini^- 

 ham does not appear to have been acquainted with the 

 above-mentioned Revision. R. carbonarium, Sauss., from 

 Tranquebar, mentioned by Bingham shortly in a footnote 

 (/. c. p. 358), is described in full by Saussure (Stett. ent. Zeit. 

 /. c. p. 183). It is a Pararhynchiuni. 



Ehynchium basimacida, Cam. 



This is a good and distinct species, and not a variety of 

 R.Jlavo marginatum, as stated by Bingham (' Fauna of India,' 

 Hym. i. p. 359). It is easily known from flavomargi natum 

 by the head and thorax not being " coarsely and very closely " 

 punctured, tiie clypeus in particular having only some small 

 scattered punctures ; it is much broader at the apex, almost 

 transverse, the sides not projecting into teeth ; tlie abdomen 

 is inipunctate, very smooth, and sinning. The form of the 

 clypeus is different from what it is in most of the species, it 

 being not roundly convex, but flat, except at the sides, which 

 have an oblique slope. The entire insect is thickly pruinose, 

 which gives it a whitish appearance. The oidy species with 

 such a broad and flat clypeus is A*, lugubrinum, which, how- 

 ever, differs from it in having the head, thorax, and base of 

 abdomen closely rugosely })unctured. 



Ehynchium lugubrinum, sp. n. 



Nigrum ; abdominis segraentis basalibus duobus flavo-lineatis ; alis 



fulvo-violaceis ; tegulis rufis. 2 • 

 Long. 14-15 mm. 



Ilab. Khasia Hills. Coll. Rothney. 



Antennae and head entirely black. Front and vertex 

 rugosely punctured, thickly covered with longish fuscous 

 hair. Antennal keel stout. Clypeus slightly obliquely 

 narrowed at the apex ; the sides slightly obliquely depressed, 

 closely rugosely punctured, the apex with a rounded incision, 

 closely punctured and thickly covered with silvery pubes- 

 cence ; the extreme apex depressed and punctured. Pro- and 

 mesothorax closely and almost uniformly punctured; the 

 niesopleurse above with the punctures runniiig into reticula- 

 tions ; the basal half of the metapleurge smooth, the apical 

 reticuiaterl ; the upper partof tiie median segment reticulated, 



