16 Mr. E. E. Austen on new 



fifth (or four til) and following segments (at least in type and 

 j)ara-type) with a dark transverse band, occupying anterior 

 two-thirds of each segment. Wings : first posterior cell, iu 

 type and para-type, closed 0-7.5 mm, from margin; anterior 

 intercalary vein varying in length, terminating abruptly 

 before reaching margin ; veins mainly mummy-brown or 

 dark brown, auxiliary vein, base of first longitudinal, and 

 main portion of fifth longitudinal vein paler (cinnamon) ; 

 stigma transparent, not noticeable. Squamae cream-buff. 

 Halteres as in ^^Egophagamyia pungens. Legs : tibiie and 

 tarsi clove-brown, middle tibicC, except distal extremity, 

 sometimes paler (cinnamon), proximal portion of front tibiie 

 aUo cinnamon-coloured in case of type. 



Astove I., Indian Ocean (north of Madagascarj ; type and 

 one other specimen (P. R. Dupont). 



Genus Bouvierella, Surcouf. 



(Biilletiu de Miiseuin National d'Histoire Naturelle, AnniSe 1909, 

 p. 176 (Paris, 1909).) 



Bouvierella pulchella, sp. n. 



? . — Length (1 specimen) 12'6 mm. ; width of head 

 4- mm. ; width of front at vertex 0*6 ram. ; lengtli of pro- 

 boscis 1'75 mm.; length of wing 10* 1 mm. 



Head, pleura;, and pectus grey, dorsum of thorar slate- 

 coloured, with a pair of faint, grey, admedian, longitudinal 

 stripes; first two abdominal segments cream-buff, each marked 

 on dorsum ivith a black blotch, that on second segment median^ 

 elongate-rectangular, that on first segment occupying greater 

 part of dorsum except posterior angles, and tapering to hind 

 margin ; remrnning abdominal segments black, hind iuargins of 

 third to fifth segments inclusive pearl-grey, clothed with silvery- 

 white hair ; wings light isabella-coloured : legs, except coxce, 

 entirely black. 



Head : subcallus, face, jowls, and basioccipital region 

 pearl-grey, clothed with white hair, upper part of front 

 blackish slate-coloured and clothed witli blackish hair ; 

 frontal callus clove-brown, cuneate, with the upwardly directed 

 apex prolonged into a narrow raised line ; front narrowing 

 sliglitly below ; palpi slender, slate-grey on outer side ; pro- 

 boscis clove-brown ; antennae entirely clove-brown or black, 

 except articular surface of third joint on outer side, which 

 is narrowly cinnamon, first and second joints clothed with 

 short black hair, expanded portion of third joint without an 

 angular prominence on upper margin. Thorax: humeral 



