612 C01UXINA. 



Abdomen above black ; Cjnnexiown clear palo yello\v ; beneath 

 pale yellow, inths^ the first 1 or 5, int'u $ 2 or 3 S3jfiii3!itd, black. 

 Length, 2-J lines. 

 Common in the Cambridge Fens (Q-. E. Crotch). 



/Species 18. CORIXA. DOUGLASL 



CORISA DOUGLISI, Fieb. (in litt.) 



"Above blask, entirely rastrate, with yellowish-white lines. 

 Pronolum not prolonged, with 67 lines, the hinder ones curved, 

 the 2 middle ones united outwardly into one. Clavus on the basal \ 

 with 6 7 straight, horizontal lines, shortened from the scutellar 

 angle downwards ; posterior with short, interrupted, somewhat 

 undulating, jagged, fine lines and spots. Cjrium with narrow, 

 somewhat jagged and undulating lines, here and there broader at the 

 end and shortened towards the margin, inwardly shortened, a longi- 

 tudinal broad dark space, in which is a row of fine pale dots ; line of 

 the membrane-suture narrow, whitish, inwardly shortened; on the 

 apex of the corium reaching to the dusky margin. Membrane with 

 fine, interrupted, undulating lines, distant on the middle, parallel on 

 the inner margin. Abdomen above black-brown ; Connexivum and 

 posterior segments yellowish-white. 



"3f lines. $;Pal& broad, long semioval, at the base 

 broad ; tibiae short, thick, clavate. Frontal depression shallow, 

 flattened towards the top, reaching to about the angles of 

 the eyes. Underside yellowish-white ; the xyphus short, almost 

 cordate, convex, at the end channel formed, base brown. Middle 

 of the Sternum under the coxae, and the pleurae on the suture, 

 narrowly black. Lobes of the prosternum of equal width 

 throughout, in front obliquely rounded. The first 2 segments 

 of the abdomen and the 3rd on the base blackish. 



" Allied to C.fossarum ; resembles it in markings, but has different 

 xyphus and palre, the latter very like those of C. distincta" 



A single specimen taken in the Cambridge Fens, by Mr. Gr. E. 

 Crotch, and sent to Dr. Fieber for determination, has been named 

 and described by him as above. 



NOTE. Corixa striata, stagnates, lateralis, and dorsalis, four 

 British species, described by Dr. Leach in the 12th vol. of the 



