LIST OF HOMOPTEROUS INSECTS. 87 



vertex. Mesothorax with a keel on each side. Legs very stout. 

 Fore win^s with the costa somewhat gibbous near the base ; areolets 

 with a slight metallic tinge ; veins tawny. Hind wings grayish. 

 Length of the body 3 lines j of the wings 7 lines. 



a. Mexico. From M. Salle's collection. 



A 



ISSUS CLYPEATUS. 



Viridis aut viridi-fuscus, nigro notatus ; vertex transversus, 

 depressus ; frons tricarinata; pro thorax antice convexus; 

 mesothorax bicarinatus ; alee anticee submetallicee> costa basi 

 subgibbosa ; posticce drier as rentes. 



Green, or greenish brown, marked with black, especially be- 

 neath. Vertex depressed, twice broader than long ; front flat, with 

 three indistinct keels, a little narrower towards the vertex, slightly 

 notched in the middle by the face. Prothorax more than twice 

 broader than long, convex in front, hardly extending over the 

 vertex. Mesothorax with a keel on each side. Fore wings with a 

 slight metallic tinge; somewhat gibbous along the costa; veins 

 green. Hind wings grayish. Length of the body 2\ lines ; of the 

 wings 6 lines. 



This species may be distinguished from the preceding by the 

 front, which is not sloping, and not produced on each side by the 

 face. 



a. Mexico. From M. Salle's collection. 



" T 



ISSUS CASSIDIFORMTS. 



Niger; vertex transversus, de pre ssas ; frons oblonga, tricarinata ; 

 prothorax ajitice convexus ; mesothorax tricarinatus ; tibia 

 tavsique Jlavo fasciata, alee antica testaceo varies, guttis 

 duabus aut tribus plagaque albidis ; postica obscure ci- 

 nerea. 



Black. Vertex depressed, hardly twice broader than long ; 

 front much longer than broad, with three indistinct keels, a little 

 narrower towards the vertex, with a slight transverse ridge towards 

 the face. Prothorax more than twice broader than long, convex 

 along the fore border, which extends slightly over the vertex. 

 Mesothorax with three indistinct keels. Tibise with a yellow band 



12 



