244 OETHOPTEEA. 



in having the large spur of the posterior tibiae somewhat longer in proportion to the 

 metatarsus. The males are more distinct, the elytra of P. rex possessing numerous 

 oblique veins.'] 



ECTECOUS, Sauss. 

 Ectecous, Saussure, Melang. Orthopt. 6 e fasc. pp. 537, 554 (1878). 



This genus closely resembles Prosthacustes in its general facies, but differs from it 

 in the structure of the head, elytra, and spurs. It is easy to distinguish by the anterior 

 tibiae being perforated at the outer side only, as in Ilemicophus, which is of a slender 

 form with long elytra, having a very different elytral tambourine, i. e. the speculum 

 elongated*. The elytra of the males are very similar to those of Paragrylius, but 

 without apical field. 



l. Ectecous cantans, sp. n. (Tab. XII. figg. 8, 9, 10.) 



Sat parvus, fusco et fulvo irroratus. Caput antice nigrum, ore brunneo, nonnunquam vitta longitudinali 

 repanda flava. Processus scutelli facialis prirao articulo autennarum paulo angustior, ad verticem trun- 

 catus. Cranium bisulcatum ; rostro verticis angusto, parallelo, horizontali. Oculi valde convexi, ovati, 

 $ piriformes. Antennae fuscas, annulis flavis minutis valde remotis ornatae, basi pallidiores. Pronotum 

 superne marmoratum, lobis lateralibus fuscis, obliquis, angulo antico vix rotundato. Pedes crassiusculi, 

 fusco fasciati. Tibiae anticas extus foramine oblongo, intus nullo. Pemora postica oblique fusco lineata ; 

 tibiae fusco fasciatae, spinis fulvis apice nigris ; calcaribus internis 2 asquilongis, quam dimidius metatarsus 

 subbrevioribus. Metatarsus supra denticulis 2 : 5. Abdomen marmoratum, valde pubescens, subtus 

 flavescens. Cerci fusco-testacei. 



$. Aptera. Lamina supra-analis elongato-trapezina, utrinque foveolato-subsinuata. Ovipositor femori brevior ; 

 valvis apicalibus ovato-lanceolatis, superis anguste lanceolatis, acutis ; inferis, dimidia parte basali, 

 rotundato-dilatatis. 



<S . Elytra abdominis apicem liberantia, quadrato-elliptica, fusco-testacea, basi et intus f usco-umbrata, cantho 

 laterali et margine basali testaceis ; venis obliquis 4+2 vel 5 + 3. Speculum transverse ellipticum, per 

 venas 4-5 transversas divisum, quarum anticae utrinque arcuatae ; angulo anteriore obtusissimo, marginibus 

 anticis subarcuatis. Vena postanalis arcuata, a medio ramulum ad speculum emittens. Vena post- 

 axillaris prima sigmoidalis, cum vena postanali in arcum conjuncta. Vena postaxillaris secuuda crassa, 

 submarginalis. Campus lateralis fuscus, margine pallido; vena mediastina dimidia parte apicali 7-8- 

 ramosa; pars basalis campi insuper venis sigmoidalibus 3-4 apice plus minus furcatis praedita. Alae 

 nullae. Lamina supra-analis transverse rotundato-trigonalis, valde pilosa. Titillatores crassiusculi. 



Var. J $ . Plus minus flavescens. 



$ . Long. corp. 10 ; pronot. 2-5 ; elytr. ; fern. post. 8-8 ; ovipos. 6-8 millim. 



$ . Long. corp. 11*8 ; pronot. 2-5 ; elytr. 7*5 ; fern. post. 11*8 millim. 



Figures : — Pig. 8, the male insect. — Pig. 9, the female. — Pig. 10, the end of the ovipositor. 

 Bab. Mexico, Orizaba (Mus. Genavense : $ ). — Guiana, Cayenne [ s ]. 



This insect nearly approaches E. hedyphonus, Sauss., from Brazil, the type of which 

 is not available for examination. The latter has the superior inner spur of the hind 

 tibiae longer than the intermediate one, the ovipositor of the female as long as the 

 hind femur, and the speculum in the male more triangular. It is not unlikely that 

 they are varieties of the same species. 



* Ilemicophus jparance, Sauss., loc. cit. p. 773. 1, J, nee $ . 



