316 PERCY SLADEN TRUST EXPEDITION 



Size as last species. 



Localities. Seychelles. Silhouette: from near Mt. Pot-a-eau, about 1500 ft., VIII. 

 1908; Mare aux Cochons and forest above, IX. 1908. Mahe : from near Morne Blanc, 

 X. 1908 ; high forest of Morne Blanc and Pilot, XL 1908 ; Mare aux Cochons district, 

 about 1500 ft., I.— II. 1909. Praslin : Cotes d'Or Estate, XI. 1908. 



Ephydridse. Notiphilinae. 



ACANTHONOTIPHILA, n. g. (PI. 15, %• 23). 



This genus comes near Notiphila, Fallen. 



Head. Eyes longish oval with the major axis vertical and the radius of curvature 

 greater at top than bottom. Jowls present. Face and frons broad, nearly parallel-sided, 

 in profile somewhat hollowed beneath antennae. Hind head somewhat protuberant. 

 Vibrissas present. Prelabrum visible. 



Bristles ; inner and outer verticals, two upper fronto-orbitals (bent outward), two 

 lower (bent forward) ; divergent ocellars ; fine post-verticals, two pairs of stout bristles 

 on the frons. 



Antenna as in Notiphila ; the second joint bristly with a very stout terminal spine ; 

 the arista with few rays (three in the typical species). 



Fig. 8. Acanthonotiphila coriacea, n. g. et n. sp., wing. 



Thorax and scutellum covered with stout bristly hairs, which are arranged in 

 moderately regular rows ; they are similar in character all over the dorsum so that there 

 is no distinction between the achrostical and the other rows. A pair of prescutellars but 

 no definitely assignable dorso-centrals : one humeral, one intra-humeral, two noto-pleural, 

 two supra-alar, four scutellar (the terminal pair crossed at the tips), two meso-pleural, one 

 sterno-pleural. 



Wings (Fig. 8), costa to third vein but also rather thickened between third and fourth 

 veins, bristly to the first, the last bristle being longer and like a small spine ; third vein 

 with three or four bristles on the dorsal side, where it is met by the second vein. 



Abdomen with segments of nearly equal length. 

 The texture of the insect is coriaceous. 

 Type, the following species. 



16. Acanthonotiphila coriacea, n. sp. (PI. 15, fig. 23). 



Head. Frons darkish grey, the bristles standing on minute black spots ; the frontal 

 triangle is marked out by two rows of slightly converging fine hairs which begin from the 



