BRITISH WATERBUGS. 61 



2. C. coLEOPTRATA (Fabr.). Figured by Saunders and many 

 others. Plentiful from Lincolnshire to the southern coast, but 

 not very western in its distribution ; I have taken it in Kent 

 and Surrey. 



It is usually brachypterous, the pronotum being then very 

 small, and the membrane not distinct. Mulsant and Rey 

 described the macropterous form from a single specimen half a 

 century ago under the name of Corisa fasciolata ; but a few 

 years ago Dr. Horvath captured three examples in Hungary, and 

 generously gave one to me. The pronotum is normally formed, 

 and the membrane distinct. 



GLiENOcoRiSA, Thomson. 

 {= Oreinocorixa, F. B. White ; Saunders.*) 

 Face hairy, excavated in the male, flattened in the female. 

 Stridulator, stridular area, and strigil present in the male. 

 There is only one, very rare, British species. 



1. G. CAViFRONS (Thomson) (Corixa alpestris, Douglas & Scott). 

 Figured by Saunders ; male palfB figured by me. Only taken so 

 far in Britain in one locality, i. e., Beinn Chearan, in Srath glas 

 (Boss), in a little tarn on the summit. 



Callicorixa,! F. B. White. 



Face as in the preceding, but smooth. Stridulator and 

 stridular area present in the male, strigil apparently absent. 

 There is always present in both sexes a characteristic black spot 

 on the posterior tarsus (not merely the fringing hairs, but the 

 tarsus itself). 



I am unable at present to clear up satisfactorily the species 

 of this genus, and refer the reader to Saunders, and to my paper 

 in the ' Quekett Journal.' 



1, C. pr^usta (Fieber). This is generally distributed. I 

 have taken it all over the Scottish Highlands and islands, where 

 it is by far the commonest corixid ; also in Kent, Surrey, 

 Middlesex, &c. 



2. C. soDALis (D. & S.). Mr. Saunders seems doubtful as to 

 the validity of this, and all the specimens I have seen labelled 

 as this species are only pneusta. 



3. C. BOLDi (D. & S.). The unique type is, I believe, at 

 Newcastle Museum. It is probably, as Mr. Saunders suggests, 

 an aberration oiprceusta. 



4, C. coNciNNA (Fieber). Palae figured in * Quekett Journal.' 

 Distributed well over England, though not common ; also in the 

 Perthshire Highlands. 



* GlcBnocorisa, from corisa, a misspelling for corixa, generic name, 

 the affix probably being a misspelling for the Greek glene, an eyeball, in 

 allusion to the big eyes. Oreinocorixa, from Greek oreinos, of a mountain. 



t Greek kallos, beauty. 



