APITHES.— OEOCHAEIS. 269 



venis longitudinalibus 5, postice convergent ibus ; venulis inter illas oblique transversis, areolas oblique- 

 quadratas formantibus ; areis apicalibus inter ramos obliquos venae mediae per venulas irregulares sub- 

 longitudinales baud dense reticulatis. Vena mediastina 8-9-ramosa. Alae breviter caudatae, griseae. 

 Pedes graciles ; tibiae anticae lineares, intus tympanum elongatum ellipticum, extus impressionem 

 oblongam obsoletam haud perforatam, obferentes. Femora postica pro genere gracillima, oblique fuseo- 

 lineata, ad apicem fusco-fasciata. Tibiae posticae fusco-fasciatae, supra fuscae, spinis 8 : 5 instructae. 

 Metatarsus spinulis 1 : 3 minoribus armatus. Ovipositor femoris longitudine, gracilis, valvis apicalibus 

 styliforinibus, subtus multicrenatis. 

 $. Long. corp. 11*5; pronot. 2-5, latit. 2-5; elytr. 12, latit. 3; femor. post. 12; ovipos. 12; latit. pronot. 

 2*5 ; elytr. 3 millim. 



Figures. — Fig. 18, the female insect. — Fig. 19, ditto, in profile. — Fig. 20, the ovipositor in profile. 



Hab. Panama, Bugaba {Champion). 



A very distinct species, owing to its slender legs and regularly, not densely reticu- 

 lated elytra. 



OROCHARIS, Uhler. 



Orocharis, Uhler, Proc. Ent. Soc. Phil. ii. p. 544 (1864) ; Saussure, Miss. Scient. Mex., Orthopt. 

 pp. 466, 492 ; Melang. Orthopt. 6 e fasc. pp. 647, 749. 



This genus includes numerous species which are all very closely allied and difficult 

 to separate, particularly in the female sex. The males present better differential 

 characters — in the venulation of the drum of the elytra, the characteristic veins of this 

 organ showing distinct variation in form according to the species, principally in the 

 stridulating vein, which is either transverse (Tab. XIII. fig. 22 a) or oblique and 

 bisinuated (Tab. XIII. fig. 23). The speculum is also more or less elongate, but less 

 characteristic, it being rather variable in different specimens of the same species ; its 

 anterior angle receives a branch of the postanal vein, which makes it somewhat 

 truncate, except in one known species, in which the little anal branch anastomoses 

 with the diagonal vein instead of reaching the angle of the speculum. 



The species differ a little in size. They are all of a fulvous-greyish colour. 

 It is probable, however, that in life these insects are often of a whitish-green 

 colour, as in the genus (Ecanthus, but not in all specimens, greyish varieties being 

 frequently found in living specimens, as they are, for instance, in Mantidse. Generally, 

 the legs are dotted with reddish-brown, but these slight differences of coloration are 

 of no importance. 



The anterior tibiae have an elliptic tympanum on their inner side, and, generally, a 

 smaller tympanum on their outer side. The inner drum, examined by transparency, 

 appears as if divided by a longitudinal opaque line ; the outer drum is sometimes 

 obsolete. In this respect the genus Orocharis differs from Paroecanthus, the latter 

 having the principal drum on the outer side of the tibia and the inner perforation often 

 more or less closed. The mobile spines of the hind tibise are more or less numerous, 

 and not very characteristic. 



