Jcnoivlcdge of the Ilomopterous Family Gicadidm. 193 



base, a small spot just beyond basal cell, some short shadings on the 

 longitudinal veins to ulnar and apical areas and the same on the 

 transverse veins at bases of most" of the apical areas black. Head 

 including eyes about as wide as base of mesonotum ; the lateral 

 margins of the pronotum strongly angularly ampliated, their apices 

 acutely spinous and a little anteriority recurved ; the greyish 

 pilosity particularly developed on the mesonotum and abdomen, on 

 the last forming distinct long segmental margins ; the face is more 

 or less piceous, very strongly longitudinally sulcated, its lateral areas 

 transversely ridged ; rostrum reaching the posterior coxa?, its apex 

 piceous ; intermediate and posterior femora longitudinally and 

 linearly streaked with fuscous beneath ; anterior femora obtusely 

 spined beneath. 



Long. excl. tegm. $ 22 millim. Exp. tegm. 76 millim. 



Hab. Madagascar; Majunga and Pays Mahafaly 

 (Paris Mus.). 



This species is allied to P. polydorus, Walk., of S. and 

 E. Africa, from which, apart from other characters, it is at 

 once separated by the lai-gely spinous character of the 

 lateral pronotal margins. 



Platyplcura seraphina, sp. n. 



$ . Head, pronotum, and mesonotum dull ochraceous ; head with 

 two transverse black fascia?, the first extending through area of ocelli 

 to lateral margin in front of eyes, the other one connected with it, 

 a little more broken and passing through base of front ; pronotum 

 with the lateral and posterior marginal areas stramineous, a 

 central longitudinal fascia connected with an anterior transverse 

 curved line and the incisures black ; mesonotum with two central 

 anterior obconical spots, with a much longer fasciate spot on each 

 side of them crossing the whole of the lateral area, and a triangulate 

 linear spot in front of the cruciform elevation, black ; abdomen 

 above pale castaneous with transverse segmental black fascia? which 

 are mostly broken on disk ; body beneath and legs dull ochraceous, 

 sternum greyishly tomentose, lateral margins and striations to face, 

 and a fascia between face and eyes piceous or black. Tegmina 

 oreyishly subopaque, the veins reddish-ochraceous, with pale fuscous 

 mottlings and shadings, a curved fascia crossing tegmina through 

 radial area, more or less connected with a large faciate spot which 

 more than occupies the whole of seventh, apical area, a transverse 

 spot at end of radial area, the transverse veins at bases of apical area 

 2-5, a double series of spots at apices of longitudinal veins to apical 

 areas, and basal cell, piceous ; wings reddish-ochraceous ; a basal 



TRANS. ENT. SOC. LOND. 1905. — PART I. (MAY) 13 



