EDWARDS— DIPTERA, TIPULIDyE 199 



''very narrow at base. Halteres pale ochreous, knob marked with brown. Abdomen 

 brown above, pale beneath, with one dark brown lateral line ; base and sides of first 

 segment dark chocolate-brown. 



Length of body 7 mm. 

 ,, wing 6"5 mm. 



This species is closely allied by its moniliform antennae and wing-markings to 

 Rhipidia afra Bergroth, but differs markedly in its smaller wings and in the coloration 

 of the thorax. It shows still greater resemblance to R. pulchra Meijere, from Java. 

 The chief differences are that in R. pulchra the antennae are unspotted (?), the pleurse 

 have only two brown stripes, the abdomen is pale above and below, and the bases of the 

 tibiae as well as of the femora are ochreous ; the dark spot on the 7th longitudinal vein is 

 near but not at the apex. 



Log. Seychelles. Mahe : 4$ from Cascade Estate, 1909. 



Meijere has recently (Tijd. v. Ent., 1911, p. 27) recorded the male of R. pulchra and 

 now places the species in Dicranomyia, and without doubt the present species must be 

 placed in the same genus. I consider, however, that these species, and others I have 

 seen from Africa, render it advisable to sink Rhipidia as at most a subgenus of 

 Dicranomyia. The antennge of the species oi Rhipidia seem to show insensible gradations 

 from being quite simple to being strongly pectinate. The British Museum possesses $ 

 and ? specimens of R. afra from Uganda, and the antennae are not pectinate in either 

 sex, so that this species, at least, is a Dicranomyia. 



Genus Thrypticomyia Skuse, Proc. Linn. Soc. N. S. Wales, ser. 2, iv. 774 (1890). 



4. Thrypticomyia seychellensis, sp. ii, (Plate 10, fig. 3, wing; plate 11, fig. 3, $ 

 genitalia.) 



Fusca, thorace rufescente, tarsis albis ; alis hyalinis, stigmate infuscato, brevi. 



$^. Head blackish, antennae dark fuscous. Thorax rufescent ochreous, more fuscous 

 above, almost globular in shape. Legs dark fuscous ; coxae reddish ochreous, femora 

 lighter towards the base, tarsi with apical f of metatarsus, and the 2nd and 3rd joints 

 white ; 4th and 5th, sometimes also part of 3rd pale brown, claws dark. Wimj.s hyaline, 

 tinged with brown on the outer half, with violet or coppery reflections ; stigma distinct, 

 short, fuscous ; veins and margins fringed with hairs ; usually the subcostal cross-vein is 

 just before, and the tip of the mediastinal vein a little after, the origin of the praefui'ca ; 

 marginal cross-vein about in the middle of the stigma, placed some distance before the 

 tip of the first longitudinal vein, which ends freely in the wing ; supernumeraiy cross- 

 vein usually precedes marginal only by a distance about equal to its own length, both it 

 and the marginal cross-vein are sometimes unpigmented, and so may appear at first sight 

 to be absent ; great cross- vein about middle of discal cell. Halteres dark fuscous, base of 

 stalk ochreous. Abdomen dark fuscous, lighter below. 



% with the abdomen markedly contracted at base. 



Length of body 4 — 6 mm. 

 „ wing 5 — 7 nun. 



,, legs 13 — 17 mm. 



SECOND SERIES— ZOOLOGY, VOL. XV. 26 



