BY FREDERICK A. A. SKUSE. 801 



characteristic, evidently of more importance than the mere 

 absence of a discal cell under ordinary circumstances. They also 

 apparently differ from the typical species of Rhy2oholoi)hus in 

 having the second longitudinal vein arcuated or even angulated at 

 the base. It is unfortunate that all the specimens before me are 

 females, as an examination of the male forceps would be interesting. 



The hind femora are at least one-third longer than the inter- 

 mediate pair, and distinctly wider than in either this or the fore 

 pair. The third longitudinal vein, beyond the small cross-vein, is 

 perfectly straight, and noticeably thicker than the other veins 

 terminating at the apex of the wing. (PI. xxi., fig. 12). 



321. Rhypholophus (Amphineurus) umbraticus, sp.n. 



9- — Length of antennae 0*050 inch ... 1-27 millimetres. 



Expanse of wings 0-260 x O'OSO ... 6-62 x 2-02 



Size of body 0-200 x 0-035 ... 5-08x0-88 



Head dark brown, clothed with golden-yellow hairs ; palpi, 

 rostrum, and antennae brown, the first few joints of antennae 

 and last joint of palpi more or less ochreous. Thorax deep 

 fuscous-brown, opaque, spai-ingly sprinkled with short hairs ; 

 lateral margin from humeri to base of wings tinged with ochreous ; 

 scutellum paler fuscous, or even ochreous-brown. Halteres ochre- 

 ous with fuscous stem, the base more or less ochreous. Abdomen 

 deep brown, clothed with yellow hairs ; pectus and ovipositor 

 ochreous-yellow or brownish-ochreous. Legs ochreous-brown to 

 fuscous^ terminal tarsal joints infuscated. Coxse usually ochreous 

 or brownish-ochreous. Wings pellucid (when denuded) tinged 

 with brownish-yellow anteriorly and along the fifth longitudinal 

 vein ; densely covered with brown hairs^ which appear darker 

 (being thicker) at the tips of the auxiliary and first longitudinal 

 veins and about the great cross-vein ; veins pale brownish- 

 ochreous. Auxiliary vein strong and distinct, reaching costa 

 beyond marginal cross-vein a distance equal to the length of latter; 

 sub-costal cross-vein situated a short distance beyond origin of 



