334 PERCY SLADEN TRUST EXPEDITION 



39. Hippelates stigmatica, n. sp. 



This is the smallest of the five species and must be nearly related to H. minor 

 De Meijere (Tijd. voor Entom. li. 168). The latter has black thoracic stripes and 

 entirely yellow legs, while the present species has brownish stripes and the whole of 

 the front tarsi and last joints of mid and hind tarsi black. It possesses the pleural spot 

 of //. minor. 



<??. Head. Entirely yellow except for a round black spot on which the ocelli 

 stand ; the frontal triangle is concolorous with the rest of the frons but is much more 

 shining, its base almost fills up the space between the eyes and its point extends to about 

 halfway between the vertex and the antennal bases. Antennae yellow with a slightly 

 pubescent black arista. Orbital bristles (1 + 3), inner and outer verticals, crossed post- 

 verticals ; a row of bristles along each side of the frontal triangle directed forward and 

 inward ; small vibrissa? present. Jowls about one-fourth depth of eye. Tongue and palpi 

 yellow. 



Thorax. Yellow-brown ; in well-marked specimens there are four longitudinal 

 stripes of darker brown which do not meet either the front or the hind borders of the 

 dorsum ; these lines vary somewhat in breadth and in some cases are confluent, especially 



Fig. 20. Hippelates stigmatica, n. sp., wing. Fig. 21. Hippelates lonyiseta, n. sp., wing. 



in the case of the central pair. The last pair of dorso-central bristles are present, but the 

 bristles are easily damaged. Pleura with a shining black spot. Scutellum pale yellow 

 with two terminal and a few side and discal bristles. Metanotum shining black. 



Wings, as in Fig. 20, hairy with yellow veins. 



Halters pale whitish-yellow with yellow stalks. 



Legs yellow w r ith darkened tip to tibiae and darkened tarsi in first pair ; last two 

 joints of tarsi black in other pairs, the tibial spurs of the hind legs are small. 



Abdomen. Brownish-yellow : the ovipositor shining black. 



Size. About If mm. 



Localities. Seychelles. Mahe : from near Morne Blanc, about 800 feet, X. — XL 

 1908 ; Port Victoria, XII. 1908 ; marshes on coastal plain, Anse aux Pins and Anse 

 Eoyale, I. 1909; Anonyme Island, I. 1909. 



40. Hippelates longiscta, n. sp. 



This is a very interesting form in which the tibial spurs are greatly developed, and 

 the male possesses a pair of very long fine bristles on the tongue. All the bristles on the 

 insect are pale. 



