ZOOLOGY OF FERNANDO NORONHA. 535 



Grenus CEcella, n. gen. 



Affinities doubtful ; nearest to Bargilis in the structure of 

 the legs, but more nearly approaching Elimcea in neuratiou. 



Vertex slightly convex, shaped nearly like an equilateral tri- 

 angle when viewed from above, the fastigium projecting about as 

 far as the scapes of the antennse, when the latter are recurved. 

 Eyes large, round, prominent. Antennae slender, filiform, at least 

 as long as the tegmina. Pronotum above flat, oblong, slightly nar- 

 rowed in front and rounded behind, excised laterally at the base 

 of the wings. Tegmiua rather narrow, especially at the tips, but 

 hardly pointed ; shorter than the wings, the drums of the male 

 triangular, vitreous, nearly alike on both tegmina. Front leo-s 

 moderately stout, unarmed ; the tibiae mucb swollen at the base 

 to receive the linear foramina, which are well marked on both 

 sides. Tarsi of all the legs similar, of nearly equal size, and about 

 as long as broad, the second joint lobate, the last very slender 

 and nearly as loug as the two preceding joints together. Middle 

 tibiae with a few very short and small spines towards the extremity. 

 Hind legs long and slender, the basal half of the femora mode- 

 rately thickened, furrowed on the side, and carinated below; 

 tibiae with a double row of short and slender spines, and with two 

 small spines at the tip. Cerci of the male nearly as long as the 

 short abdomen, wdth long terminal forks, the longest slender and. 

 almost sickle-shaped at the tip ; subgenital laminae short, concave 

 at the extremity. Ovipositor nearly as long as the abdomen 

 moderately broad, strongly compressed, turned upwards, and 

 pointed at the tip. 



16. tEcELLA EUEOIEEEA, U. sp. 



Exp. tegm. 38 millim. ; exp.al. 42 millim. 



Head, thorax, tegmina, tips and veins of wings, and greater 

 part of legs grass-green ; antennae and tibiae, abdomen and appen- 

 dages yellowish, a yellowish line on each side of the pronotum 

 above ; w'ings liyaline. 



Hah. Pernambuco and Fernando Norouha. In all the speci- 

 mens from the latter locality the green colour has more or less 

 faded to yellowish brown. When fresh this insect is brio-ht 

 green. It was common on Main Island, and especially on Eat 

 Island. 



