Sept., 1906.1 Bruner: The Orthoptera of Trinidad. 153 



This insect is nearest to L. gracilis Bruner, a species that comes from 

 Brazil and which has recently been recognized as distinct from L. 

 filiformis Serv. It has been .described in the Proceedings of the 

 U. S. National Museum in connection with other forms from South 

 America. 



Genus CYLINDROTETTIX new. 



Aside from the characters mentioned in the foregoing table a few additional 

 characters should be given as follows: Head long and pointed; the eyes very 

 oblique, not prominent, about as far apart above as the width of the second antenna] 

 joint ; fastigium equallv as long as the eyes, its upper side rounded, its apex as in 

 Leptysmina, antennae strongly ensiform, as long as the head and pronotum together 

 frontal costa prominent and sulcate above the ocellus to a point slightly in advance of 

 the apex of fastigium where it suddenly narrows to a mere ridge, below the ocellus 

 faint. Pronotum a trifle longer than the occiput, its surface strongly punctulate, all 

 three transverse sulci well-defined, the median carina present but not prominent 

 except on the hind lobe ; front and hind margins rounded above, the former with the 

 middle squarely docked. Prosternal spine of moderate size and enlarged apically, 

 gently directed to the rear. Legs weak, slender and short ; hind femora reaching 

 but little beyond the basal two thirds of abdomen ; hind tibiae considerably shorter 

 than the femora, with nine or ten weak spines in outer row. Tegmina long and 

 slender, reaching considerably beyond the tip of the abdomen. Valves of the 

 ovipositor rather short and tapering rapidly towards the moderately hooked apices ; 

 the upper ones provided above basally with a single prominent black tubercle, the 

 lower pair each with three fairly large tubercles. 



59. Cylindrotettix insularis, new species. 



General color grass-green with a ferruginous tinge to thorax above and tegmina. 

 The usual greenish-white line beginning at lower posterior edge of eyes and passing 

 back to lower edge of pronotum and across pleurae to base of hind femora. \ ace 

 apple green; antennae ferruginous, eyes aeneous; anterior and middle legs green; 

 lower side pale greenish yellow. 



? . Length of body, 38-42 ; of antennae, 14 ; of fastigium, 3 ; of 

 pronotum, 5.75; of tegmina, 33-36; of hind femora, 15.5 mm. 



Habitat. — 2 ? 9, Trinidad Island, West Indies, H. D. Chipman, 

 collector (Coll. L. Bruner). 



60. Arnilia cylindrodes Stal? 



There is a single male specimen of Arnilia in the collection from 

 Trinidad which is determined with some doubt as Stal's Opsomala 

 cylindrodes. Although it agrees well with a female specimen taken 

 by the writer at Victoria, Brazil, and another from Demerara, British 

 Guiana, a careful comparison of the structure of the last ventral seg- 

 ment of the male abdomen in specimens from Florida, Mexico and 

 South America, shows this to vary much. Our North American 



