380 ACADEMY OF NATURAL SCIENCES 



hemelytra tinged with rufous at base and fuliginous at tip; feet 

 rufous. 



Lengtli to the tip of the hemelytra three-tenths of an inch. 



In general form it resembles M. mera, but it is shorter, and 

 the tip of the thorax is considerably shorter in proportion. 



12. M. ARQUATA. — Thorax simple, quadrilineate with fuscous. 

 Inhabits Pennsylvania. 



Thorax cinereoiis, tinged with rufous on the back, each side of 

 which is a fuscous somewhat undulated line, confluent with the 

 margin behind the middle ; exterior to the fuscous line is a 

 cinereous arquated line within which is an abbreviated marginal 

 fuscous line : back not much elevated, simple ; tip terminating 

 more obtusely than usual and with a cinereous spot above : 

 hemelytra hyaline, with a dusky base, and fuliginous spot in the 

 middle and at tip ; nervures margined with brown ; terminal 

 cellule smaller than either of the two adjoining ones and trans- 

 verse : thighs blackish. 



Length to tip of hemelytra over one-fifth of an inch. 



Resembles the picta as represented by Coquebert. 



13. M. BELLIGERA. — Thorax with a projecting horn; tip 

 slender, acute. 



Inhabits Pennsylvania and Florida. [303] 



Thorax green, with small, fulvous spots ; a compressed horn 

 before, which is not in the slightest degree arquated, at its ex- 

 tremity rounded; back not carinated, but with an impunctured 

 line ; tip slender, and equally slender when viewed laterally as from 

 above, acute : hemelytra hyaline, at base varied with green and 

 yellow ; terminal nervure about three times longer than wide. 



Length to tip of hemelytra and tip of the horn half an inch. 



Resembles himaculata Fabr., but the tip of the thorax is much 

 more attenuated and acute and the terminal cellule of the 

 hemelytra is elongated. 



In adddition to the himaculata F., sinuata F., emarginata F., 

 we must place in this genus, his Centrotus huhalis. The Centro- 

 tus acuminatus of that author, is only the female of his Memhra- 

 cis himaculata. His sinuata does not appear to me to differ 

 specifically from the emarginata. 



[Vol. VI. 



