Dr. Leach's Classification of the Notonectides. 17 



Habitat in aquis stagnantibus putriclis vulgatissime. 



Elytra fusca flavido-irrorata ; margine anteriore flavido ; mar- 

 gine postico basin versus flavido-lineato. Dorsum fusco-nigricans. 



This species is about half the size of C. striata. 



Spec. 4. Corixa fossarum. 



C. fusca, thorace lineolis sex transversis flavidis, elytris fuscis 



flavido-irroratis. 

 Habitat in fossis passim. 

 C stagnali paulo minor. Elytra fusca flavido-irrorata, antice fla- 



vida, postice basin versus flavido-lineata. Dorsum flavum. 



,'\ 

 Spec. 5. Corixa lateralis. 



C. albida, thorace lineolis septem nigris, elytris nigro-irroratis : 



margine antico immaculato. 

 Habitat in fluviis. 

 C. fossarum paululum minor. Dorsum atrum, lateribus flavis. 



Spec. 6. Corixa dorsalis. /= -^ ■:^->-^'-r^ h^,^ j 



C. flavida, thorace margine lineolisque sex transversis nigris, 



elytris nigro-irroratis : margine antico immaculato. 

 Habitat in fluviis vulgatissime. - .^fc:»/» [i) 



C. stagnali paulo major. Dorsum flavum. 



b. Elytris thoraceque glaberrimis, lavibus. 



Spec. 7- Corixa Geoffroyi. (^ /U-^-t/^^-*^ ^^"i ' 



C. flavida, thorace lineolis transversis numerosissimis nigris, ely- 

 tris nigro-irroratis : dorso pernigro apice flavido. 



La Corise. Geoff. Hist. Nat. des Insect, i. p. 478. pi. 9. fig. 7. 



Sigara striata. Panz. Fn. Ins. Germ. In. 50. 23. 



vot. XII. D Long. 



