352 Annals of the Carnegie Museum. 



cT, 8.5 mm., 9 , 9 mm.; length of hind femora, cT and 9 , 21-22 mm.; 

 of ovipositor, 19.5 mm. 



Habitat. — These insects come from Puerto Suarez, Bolivia, at an 

 elevation of 150 meters above sea-level. They were collected by 

 J. Steinbach during the months of November to January inclusive. 

 The types are deposited in the Carnegie Museum. 



Genus Platyphyllum Serville. 



Plalyphyllum Serville, Ann. Sci. Nat., XXII, p. 145 (1831); 76., Ins. Orth., p. 



443 (1839); StAl, Recens. Orth., II, p. 62 (1874). 

 ? Plalyphyllus Burmeister, Handb. Ent., II, p. 699 (1838). 

 Lissophyllum Brunner, Mon. Pseudophyll., pp. 16, 143 (1895). 



If I have rightly determined it, only a single representative of this 

 genus is before me and it seems to be new. 



87. Platyphyllum nigriventris sp. nov. 



Nearly maximum in size, the pronotum obtusely rugulose; the 

 transverse sulci moderately deep, the lower margin of the sides of 

 pronotum rather heavily bordered and somewhat rugulose. Body 

 strongly depressed. 



General color brunneo-cinereous with a more or less distinct greenish 

 tinge on the pronotum, tegmina, pleura, and apex of femora, most 

 apparent in the male; this color rather relieved by numerous irregular 

 markings of fuscous on the cheeks, occiput, pronotum, legs, and 

 tegmina. Front glossy black bordered widely with white, the fasti- 

 gium of the front white; antennae pale, streaked and annulated with 

 fuscous. Sternum and underside of abdomen rather broadly black. 

 Tegmina lanceolate, the apex subacuminate. Wings infumate, not 

 tesselated. Anterior femora below minutely two-spined on anterior 

 edge; middle pair with four large spines externally, the hind pair eight- 

 spined. All the legs lengthily hirsute. Genicular lobes of anterior 

 and posterior femora spined on both sides, inner lobes of middle 

 femora spined, outer lobes broadly rounded. Middle coxae quite 

 prominently tubercled below at the apex. Last ventral segment 

 of abdomen of male or subgenital plate narrowed, deeply emarginate,. 

 and armed with long and heavy styles. Subgenital plate of female, 

 rather small, tapering, the apex roundly emarginate. Ovipositor 

 rather robust, almost straight above and with the upper margin 

 crenulatc. 



