DISTANT— RHYNCHOTA. PART II: SUBORDER HOMOPTERA 293 



margins strongly carinately elevated ; clypeus ridged ; tegmina moderately arched near 

 middle of costal margin. 



Long. incl. tegm. 5 mm. 



Log. Seychelles. Silhouette: high country near Mont Pot-a-eau; Mare aux Cochons, 

 plateau and jungle near by, all from marshy plateau. Mahe : Cascade Estate. 



Found in great numbers in undergrowth (Senecio seychellensis, &c.) in the damp 

 mountain-forests (Hugh Scott)*. 



175. Nisia thoracica, sp. n. 



Vertex of head, face, pronotum, and legs pale stramineous ; eyes black ; mesonotum 

 pale tawny- brown ; body beneath ochraceous ; tegmina creamy- white ; anterior and 

 intermediate tarsi more or less infuscate ; vertex of head moderately concave, with the 

 anterior lateral angles strongly pronounced ; face strongly concave, the lateral margins 

 strongly ridged and subparallel, much longer than broad ; pronotum narrow, the posterior 

 margin strongly angulate ; mesonotum with the central carination strongly developed. 



Long. incl. tegm. 5 mm. 



Log. Seychelles. Silhouette : forest above Mare aux Cochons. 

 A single example of this distinct species. 



There is another species of this genus represented by a single mutilated specimen, 

 not available for specific description. It is allied to N. maculosa Dist. 



Subfamily Lophopinee. 

 Genus IviNGA. 

 Ivinga Dist., Trans. Linn, Soc. Lond. Zool. xiii. p. 42 (1909). 



176. Ivinga typica Dist., Trans. Linn. Soc. Lond. Zool. xiii. p. 42, Plate 4, 

 fig. 5 a (1909). 



Log. Seychelles : found not only in the endemic mountain-forests (where it was 

 commonly beaten from the endemic " Bois Rouge " tree, Wormia ferruginea, and 

 from other plants), but also among non-endemic vegetation near sea-level. Silhouette : 

 Mahd. Anonyme Island. Dennis Island. Praslin. Felicite. Marie Anne. 



Aldabra: 1907 (Thomasset), 1908 (Fryer). 



In describing this species I gave the colour as dark ochraceous as is also the 

 invariable appearance of a very large number of specimens examined since. Mr Scott 

 has however added the note — "all these are light green during life." This is a very 

 common discoloration after death in many Cicadidse and other Homoptera. 



Subfamily Issinse. 



Only two species of one genus were brought home by this expedition. The genus 

 [Lollius) has previously only been recorded from the Malayan and Papuan regions, 

 while an allied genus Tylana, represented on the Islands of Mauritius and Bourbon, 

 was unrepresented in this Seychelles collection. 



* See footnote, p. 285. 



