258 OETHOPTEEA. 



grass-green, and the wings are very pale grey-blue with darker veins. The clypeus, labrum, and hind 

 tarsi are roseate. 

 Length of body, 2 , 28 ; of antenna? 8-5, of pronotum 5, of tegmina 27, of hind femora 15 millim. 



Hab. Mexico, Atoyac, Vera Cruz (Schumann) ; Guatemala, Amatitlan (J. S. Eine), 

 San Geronimo (Champion). 



The collections studied contain still other specimens of the genus which may 

 represent at least one, if not two, additional species. These are of about the size of 

 A. propinqua, but show well-defined lateral pale stripes and have very short antennae, 

 being but 7 millim. long. They were collected by the Kev. T. Heyde in the province 

 of Vera Cruz, and by H. H. Smith at Cuernavaca, Morelos. 



[6. Arnilia fissicauda, sp. n. 



Arnilia cylindrodes, Bruner, Journ. N. York Ent. Soc. xiv. p. 153 (1906) (nee Stal). 



The present species is a medium-sized and moderately slender insect, which in general appearance reminds 

 one of both A. marscJialli and A. vitreipennis, but which differs decidedly from both of these in the struc- 

 ture of the last ventral segment of the male abdomen and in that of the cerci as well. 



Fastigium of the vertex gently acuminate and somewhat longer than wide at base (<$), or about as long as 

 broad and meeting in front in a right angle ( $ ), longitudinally sulcate in both sexes. Eyes not promi- 

 nent, nearly twice as long as broad. Antennae normal, about as long as ( 2 ), or somewhat longer than ( <$ ), 

 the head and pronotum taken together. Pronotum coarsely and rather closely, but not deeply punctate 

 above, more finely and sparsely so at sides ; anterior edge broadly and shallowly emarginate ; median 

 carina visible, but not prominent throughout. Tegmina less closely veined than the species with which 

 it is compared above, acuminate at apex, extending about 5 mm. beyond the apex of the hind femora. 

 Hind femora of medium robustness, a trifle shorter than the abdomen in both sexes. Last ventral 

 segment of male abdomen with the apex broadly rounded, deeply fissured in centre, the lobes bent back, 

 flattened and broadly scimitar- shaped, with the apices a little overlapping. Cerci slender, and with the 

 apex pointed, instead of chisel-like as in A. vitreipennis, marsclialli, and minor. Hind edge of last dorsal 

 segment and lateral margins of supra-anal plate scarcely or not at all infuscated. Prosternal spine 

 slender and directed gently to the rear. 



General colour pale testaceous-green above and at sides, with the underside flavous. Sides of the head, lower 

 field of lateral lobes of the pronotum, and pleura narrowly streaked with dirty white. Tegmina and 

 wings somewhat infuscated, the veins more or less lead-coloured. 



Length of body, S 24, 2 32 ; of pronotum, $ 4-15, 2 5*2 ; of tegmina, S 21-5, $ 26 ; of hind femora, 

 6 13, $ 16 millim. 



Hab. Tkinidad (H. D. Chipman : 6 ) ; Beitish Guiana, Demerara (B. J. Crew : 2 ). 



The female from British Guiana seems to belong here ; at any rate it differs some- 

 what from the insect which bas been provisionally called A. cylindrodes.'] 



7. Arnilia Colombia, sp. n. 



An insect a little larger and more robust than the average in this genus, and which has darker-coloured, 

 heavier, and longer antennas than usual. The male characters are similar to those of the preceding, but 

 more pronounced. The pale line on sides of head, pronotum, and pleura is bordered above with piceous. 

 The hind femora are rather robust and long, and the hind tibiae are decidedly heavy. 



Length of body, S 27, $ 36; of antennae, <S 12, $ 11 ; of pronotum, <5 4-85, $ 6; of tegmina, c? 23, 2 29 ; 

 of hind femora, 6 13*5, $ 17 millim. 



Hab. Colombia, San Diego, Department of Magdalena (coll. Carnegie Museum). 



