A GUIDE TO THE STUDY OF BRITISH WATERBUGS. 285 



white ; the mner fascia is also broadly outer margined with ochreous 

 white, and is succeeded above by a large patch of pluuibageous freckles ; 

 a subapical transverse dark fascia inwardly much angulated, and mar- 

 gined with ochreous white ; posterior wings ochreous white, with two 

 outer submarginal dark brown fascias, the outermost not reaching 

 inner angle. Wings beneath paler, markings more or less obsolete, a 

 distinct discoidal spot to posterior wings. Exp. wings, 28 millim. 



Hah. Lydenburg district. 



Plusia arachnoides, sp. n. 



Head and pronotum dark brownish ochraceous, with transverse 

 narrow greyish fascise, abdomen and body beneath very pale brownish 

 ochraceous, legs brown, speckled with creamy white. Anterior wings 

 obscure castaneous, the veins greyish, and with the following greyish 

 linear fasciae : two inwardly oblique about one-fourth from base, ex- 

 tending from beneath discoidal cell to near base of inner margin, two 

 outwardly oblique crossing wing near centre of discoidal cell, and a 

 duplex series of two, inwardly curved near apex, scarcely crossing wing 

 half-way ; posterior wings ochraceous, very broadly outwardly fuscous, 

 fringe greyish white ; anterior wings beneath brownish ochraceous, 

 posterior wings generally as above. Exp. wings, 32 millim. 



Hah. Pretoria. 



NOTES ON THE DIVISION VELIIARIA [EHYNCHOTA] 

 ( = SuBFAM. VELID^, Leth. & Sev.). 



By G. W. Kirkaldy, F.E.S. 



This division is in hopeless generic confusion at present, and 

 a revision is impossible without an inspection of all the types. 

 The tarsi of the intermediate and posterior legs are nearly 

 always more or less distinctly trisegmentate, but as a rule the 

 anterior tarsi are only, apparently, composed of a single seg- 

 ment; close inspection shows the presence of one or two other 

 segments, but whether these are real sclerites or merely "nodes," 

 like those found between certain of the antennal segments in — 

 e.g.- — Gerris, is contested. Accordingly, then, as authors have 

 considered them as segments, or nodes (or have overlooked them 

 altogether), have they described the anterior tarsi as 1-, 2-, or 

 3-segmentate. Thus Neovelia, F. B. White, and Trochopus, 

 Carpenter, are probably not generically distinct from Rhagovelia, 

 Mayr ; Velio)norpha, Carlini, is also probably identical with 

 Microvelia, Westw. ; it is doubtful, too, if Paravelia, Breddin, 

 can be regarded as distinct from Velia, Latr. Perlttopus, Fieber, 

 described from India (generically only) in a work on European 

 bugs, is now described in full for the first time after a lapse of 

 forty years. The other genera included in Lethierry and Severin's 

 Catalogue are unknown to me except by description. 



