194 Mr. W. L. Distant's Additions to a 



costal spot, margins to the abdominal areas, and the outer margin — 

 very wide at apex, piceous ; marginal membrane pale hyaline. 

 Head including eyes about as wide as base of mesonotum ; pro- 

 notal lateral margins ampliate and rounded, obsoletely centrally 

 angulate ; anterior femora in $ practically unarmed. 

 Long. excl. tegm. $ 18 millim. Exp. tegm. 54 millim. 



Hob. French Guinea ; Reg. de Kouroussa (H. Por- 

 beguin — Paris Mus.). 



Allied to P. severini, Dist. 



Platyplmra esa, sp. n. 



Head ochraceous, base and anterior margins of front, a spot above 

 base of antennas, a broad transverse fascia between eyes, and margins 

 of eyes connected with the transverse fascia near area of ocelli, 

 black ; pronotum with the posterior margin stramineous, the disk 

 with a central fascia subtriangularly ampliated anteriorly, less 

 ampliated posteriorly, the incisures, and sub-lateral margins (broadly) 

 black ; mesonotum black, with the margins of four obconical spots 

 — the two central shortest— ochraceous ; cruciform elevation ochra- 

 ceous ; abdomen black ; segmental margins 'castaneous, tympanal 

 flaps stramineous ; body beneath ochraceous, sternum greyishly 

 tomentose ; anterior margin and central sulcation to face, a fascia 

 between face and eyes, basal areas of opercula, abdominal segmental 

 margins, and under-surface of anterior tibiae black ; tegmina and 

 wings pale hyaline ; tegmina, with more than half of basal venation 

 ochraceous, remainder black ; basal cell and dividing line between 

 costal membrane and area, black. Head including eyes slightly wider 

 than base of mesonotum ; lateral marginal areas of pronotum moder- 

 ately ampliate, but the margins almost straightly truncate, not 

 angulate ; opercula in male broad, reaching the second abdominal 

 segment, their apical margins obliquely convex, their inner margins 

 overlapping ; rostrum reaching the posterior coxse. 



Long. excl. tegm. $ and 9 22-24 millim. Exp. tegm. 65 millim. 



Hab. Somaliland; Ouarsangueliand Obok (Paris Mus.). 



Yanga bouvieri, sp. n. (Plate XI, fig. 2 a, b.) 



£ . Head, pronotum, and mesonotum greenish or brownish- 

 ochraceous ; front of head with anterior marginal lines and a 

 central spot widened and angulated posteriorly, black ; vertex with 

 the area of the ocelli, two transverse fasciae on its lateral area, and a 

 linear longitudinal spot on each side of disk, black ; pronotum with 

 the anterior margin, the incisures, and two central lines neither 



