160 ORTHOPTERA. 



apice late rotundato ; campo posteriore diapbano. Abdomen fusco-irroratum. Pedes valde fusco- 



fasciati. 

 c? . Alarum campus anterior apice minus obtusus. 



Var. a. Elytra et alarum campus anterior fusco-irrorata. — b. Elytra fusco- et virescenti-marmorata. 

 2 . Long. 28-31-5 ; pronot. 7-6-8-6, femor. ant. 7-8-25, elytr. 15-5-20, latit. elytr. 5-6-75 millim. 

 ($. Long. 5-3; pronot. 6-2, femor. ant. 6, elytr. 15-5, latit. elytr. 5-6 millim. 



Hab. Panama, Bugaba 800 to 1500 feet (Champion). — Guiana, Cayenne (Mus. Gena- 

 vense; Prudhomme); Amazons (M us. Genavense). 



Var. maya. 



Color pallidior ; elytra brunneo-rufescentia, plus minus fusco-punctata, campo marginali virescente. Alse 

 diaphano-grisese ; campo anteriore elytrorum colore, venis longitudinalibus fuscis; campo marginali 

 pallidiore. Margo costalis alarum apice minus arcuatus ; alarum apex itaque minus obtusus. 



Hab. Mexico, Teapa in Tabasco (H. H. Smith), Temax in North Yucatan (Gaumer) ; 

 Guatemala, Zapote (Champion). 



Group MI0PTEBIGES*. 



This group is composed of small species, all American, generally of a grey or fuscous 

 colour, of very slender form, with a stick-like abdomen in both sexes, the abdomen 

 with a triangular or lanceolated, carinated supra-anal plate. 



In most of the genera the females are not winged, the wings being replaced by 

 striated lobes of the meso- and metathorax, as in the nymphs of Mantidse in general, 

 but the lobes are neither articulated nor separated. 



The antennae are somewhat moniliform and ciliated. The head is small, of elliptic 

 form, or much compressed, and the vertex has a tendency to form an elevated lobe 

 near each eye. The pro thorax is carinated, short or long : when long, its extension 

 over the coxeb is very slight. The elytra and wings are very membranaceous and 

 finely ciliated, with a short pubescence on all their margins : this is one of the 

 principal characters of the group, and separates the Miopteriges from the similar 

 types of the Old World. In the hind wings the ulnar vein is either biramose or only 

 furcated ; its base is straight and continued in a straight line with the hinder branch, 

 while the vein itself, at its first bifurcation, is broken and directed more forwards and 

 arcuated. Frequently the elytra are somewhat shorter than the hind wings. The 

 abdomen is always long and very slender, of stick-like form in both sexes, even in the 

 species with a short rhomboidal pronotum. 



The legs are slender, finely pubescent, with very long metatarsi, as long as or longer 

 than the other joints of the tarsi united ; the intermediate and posterior pairs are elon- 

 gated, generally quite filiform ; the anterior pair become more slender and elongated 

 as the prothorax becomes longer, according to the species, and in some types they are 



* =1, 1. Stirps Mioptebyx, supra, p. 129. 



