Mr. W. L. Distant on Ploinoptera. 101 



face moderately compressed, laterally strongly transversely 

 striate, centrally longitudinally ridged. 



Long. 8^ mm. 



Hub. Brazil ; Lages, 



Genus Ischnorhina. 



Ischnorhina, StSl, Hem. Fabr. ii. p. 14 (1869). 

 8ubgen. Schisto(junia, StSl, loc. cit. 



Types, /. sanguinea, Fabr., and /. ephipjnum, Fubr. 



Ischnorhina valida, sp. n. 



Head above and beneath (including face), pronotum, 



scutellum, and sternum sanguineous ; abdomen above and' 



beneath and the legs black ; base of abdomen narrowly 



sanguineous ; tegmina sanguineous, with a broad black fascia 



commencing at about one-fourth from base and extending 



and occupying rather more than the costal area, the apical 



area, and continued along the inner margin to about one- 



fourth from base, the sanguineous coloration thus being 



confined to the basal area and a medial longitudinal fascia 



not extending beyond apical area, the extreme costal margin 



for about one-fourth from base dull obscure ochraceous ; 



wings pale shining fuliginous with the veins piceous ; vertex 



with the central lobe narrowed and anteriorly produced ; 



face sharply compressed, as in typical forms of Sphenorhina, 



and prominently transversely striate on each side; pronotum' 



prominently foveately depressed on each side of anterior 



area, the anterior lateral margins moderately ampliate and 



reflexed ; scutellum quadrangularly ridged, apex also ridged. 



Long., excl. tegm., 9| mm. ; exp. tegm. 30 mm. 



Hub. Cayenne (Brit. Mus,). 



Allied to /. invalida, Jacobi (a species I have not seen), from 

 which it differs by the colour of the sternum and structural 

 characters detailed above, which are not given by its 

 describer in his diagnosis. 



Ischnorhina juno, sp. n. 



Vertex, pronotum, scutellum, face, lateral areas of pro- 

 sternum, and base of abdomen sanguineous ; disk of 

 scutellum, abdomen, body beneath, and legs black ; tegmiua 

 black, base of costal area and base of posterior claval area 

 (both these markings united at base) sanguineous ; wings 

 fubginous, the veins piceous, extreme base sanguineous; 

 vertex about as long as breadth between eyes, the apex 

 angularly projecting, a longitudinal impressed line in front 



