202 PROCEEDINGS OF THE ACADEMY OF [Part II 



St. Jean du Maroni, French Guiana, October, 1 9 . 



La Forestiere, upper Maroni River, French Guiana, 2 9 . 



Euphyllodromia chopardi ^ new species. Plate XV, figures 1 and 2. 



This species is related to E. fasciateUa (Saussure), differing in the 

 shghtly larger eyes, slightly narrower interocular space, heavier 

 latero-caudal depressions of pronotal disk, heavier and differently 

 specialized appendages of the male subgenital plate and longer 

 caudal metatarsi. 



In coloration it differs in having the maxillary palpi not immacu- 

 late, as the distal joint is suffused with mummy brown in its ventral 

 marginal portion; the pronotal disk margined with a narrow whitish 

 suffusion and not immaculate, but having two heavy, extensive 

 lateral suffusions of dark brown, which fuse caudad, and the teg- 

 mina with similar translucent and transparent areas, but entirely 

 lacking pearl gray lines and spots. 



Type: cf ; Bartica, British Guiana. December 19, 1912. (H. S. 

 Parish. ) [Acad. Nat. Sci. Phila., Type no. 5369.] 



Size rather small, form moderately slender for the genus, delicate 

 structure normal. Head with interocular space (.6 mm.) about 

 three-fifths width between antennal sockets. Ocellar spots small 

 and weakly defined. Maxillary palpi with third joint three-quarters 

 as long as fourth; fourth very strongly triquetrous, widening evenly 

 distad so that it becomes fully two and one-half times as wide as 

 third; fifth joint three-quarters as long as fourth, moderately ex- 

 panded, greatest width near base, ventral margin sub-convex and 

 oblique from that point to apex. Pronotum rather decidedly trans- 

 verse; cephalic margin weakly convex, truncate; lateral margins 

 rather strongly convex, this greatest caudad; caudal margin trans- 

 verse, but showing an even and very broad obtuse-angulation, with 

 angle very broadly convex; discal sulci very broad but well devel- 

 oped. Tegmen and wings elongate and very delicate. Dorsal 

 surface of abdomen as described for E. decastigmata Hebard,^" appar- 

 ently characteristic of the genus, sixth tergite very shallowly con- 

 cave in mesal portion, there rather thickly supplied with agglutin- 

 ated hairs. Supra-anal plate strongly transverse, broadly and 

 weakly triangularly produced between the cereal bases, with rounded 

 apex obtuse-angulate. Cercus as in decasiigynata , tapering to the 

 acute apex. Paired plate beneath supra-anal plate large and un- 

 specialized. Subgenital plate almost symmetrical, the sinistral mar- 

 gin almost straight, the dextral margin rather strongly concave to 

 the median portion; median portion with two deeply inset, large 



^In honor of the distinguished Orthopterist, Dr. Lucien Chopard. 

 1° Mem. Am. Ent. Soc. No. 4, p. 84, (1920). 



