ZOSPEEAMEEUS.— ABILA. 275 



and parallel between the antennae and plane ; below the ocellus lower, narrower, and gently sulcate, the 

 sides a little divergent towards the clypeus. Face in profile somewhat oblique, gently pnuctate, the 

 lateral carinae prominent, straight and slightly divergent downward. Antenna? filiform, nearly one-half 

 longer than the combined length of the head and pronotum. The latter with the anterior lobe cylindrical, 

 the hind one divergent, the median carina visible throughout, severed by all three of the transverse sulci, 

 which are deeply impressed ; anterior margin sinuate, slightly advanced upon the occiput and gently 

 emarginate at the middle, the hind margin above obtusangulate, the anterior lobe about one-fourth longer 

 than the hind lobe. Tegmina two-thirds the length of the abdomen, narrow, gently tapering and with 

 rounded apex, the basal portion coriaceous and closely veined, submembranous apically. Abdomen 

 slender, carinate above, and armed with slender but normally curved ovipositor- valves. Anterior and 

 intermediate femora slender, the posterior ones a trifle robust, nearly as long as the abdomen ; the hind 

 tibiae slender, armed externally with from 6 to 7 weak spines, internally with 8, their tarsi two-thirds as 

 long as the tibiae, the basal and middle joints about equal, the terminal joint a little longer. The tibiae 

 and tarsi, along with the valves of the ovipositor, sparingly hirsute. Prosternal spine pyramidal, coarse, 

 blunt. 



Face, cheeks, occiput, pronotum, and pleura, together with abdomen above, pale wood-brown or dull 

 testaceous barred and banded with dark brown and dull black. All the femora strongly, and the tibiae 

 faintly, banded with flavous and fuscous. Beneath paler, antennae dark ferruginous. 



Length of body, $ , 21-5 ; of pronotum 3 - 95, of tegmina 11*5, of hind femora 11 millim. 



Hdb. Nicaragua, Chontales (Janson). 



This specimen was figured as an Anniceris, but the structure of the ovipositor, hind 

 tarsi, and other parts would remove it from that genus. The specific name zonatipes is 

 preferable to that of nicaraguce used on the Plate. 



ABILA, St&l. 



Abila, St&l, Bihaug till K. Svensk. Vet.-Akad. Handl. v. no. 4, p. 21 (1878) ; Giglio-Tos, Boll. 

 Mus. Zool. Anat. Comp. Univ. Torino, xiii. p. 46 (1898). 



The genus Abila was erected for a South-American locust with rose-coloured hind 

 wings. Whether or not any true representatives of the genus occur north of the 

 Isthmus of Panama the writer cannot say. While examining the " Biologia " material 

 an insect was encountered which seemed to belong to Abila, and not caring to establish 

 a new genus for this species it is so included here. 



l. Abila(?) collaris, s P . n. (Tab. ill. figg. 11, 11 «, 5 .) 



Above the medium in size ; a uniformly dull, dark brownish-testaceous locust, with a conspicuous anterior collar 

 and the principal transverse sulcus of the pronotum shining black, otherwise unadorned. Wings smoky- 

 hyaline, with the costal margin brown and the principal veins infuscated. 



$ . Head enlarged, prominent, a little wider than the front edge of the pronotum, occiput gently elongate and 

 somewhat rounded ; the eyes elliptical, moderately prominent, strongly divergent, separated above by 

 a space equal to the width of the frontal costa between the antennae ; fastigium of the vertex scarcely 

 separated from the vertex, very gently depressed, provided with a longitudinal carina, about as long as 

 broad, the anterior edge truncate and separated from the frontal costa by a prominent transverse carina ; 

 frontal costa a little prominent and broadest between the antennae, not sulcate, feebly punctate and 

 narrowed below the ocellus, growing fainter but reaching the clypeus. Antennae black, filiform, the 

 apical joints testaceous. Pronotum strongly and closely punctate, the lobes about equal in length, the 

 anterior one subcylindrical, a little tumescent at the sides, the hind one expanding ; front edge rather 



2Nn2 



