354 Mr. E. E. Austen on new 



minute, appressed, maize-yellow hair, hind tibise and tarsi 

 clothed with Naples-yellow hair. 



Nyasaland Protectorate : West Nyasa, 1909 (Dr. H. S. 

 Stannus) : presented by the Entomological Eeseareh Com- 

 mittee (Tropical Africa). 



Although somewhat resembling the South African Rhhio- 

 myza denticornis, "Wied., in the colour of its Aviug-markings, 

 Rh. concinnu can at once be distinguished by the nature and 

 character of the markings on the abdomen, on which 

 longitudinal stripes are entirely absent; the presence of a 

 clove-brown band on the first abdominal segment, apart 

 from the dark spot on the face and various differences in 

 the wing-markings, will serve to distinguish Rh. concinna 

 from the following species. 



Rhinomyza stimulans, sp. n. 



$. — Length (1 specimen) 11 mm.; width of head 

 36 mm. ; width of front at vertex 05 mm. ; length of wing 

 10 6 mm. 



Dorsum of thorax raw-sienna coloured, entirely unicolorous, 

 without markings ; dorsum of abdomen orange-ochraceous, ivith 

 clove-hroivn markings, — a deep transverse band, not reaching 

 lateral margins and interrupted in middle line, occupying third 

 segment and extending on to jjosterior third of second segment, 

 and a roughly horseshoe-shaj)ed mark, also not reaching lateral 

 margins, with concavity directed forwards , occupying fifth and 

 sixth segments and forming a transverse band on posterior half 

 of fifth ; ivings faintly tinged tvith sepia, and exhibiting con- 

 spicuous dark broivn marki7igs. 



Head: front buff-yellow, sides of face and jowls cream- 

 buff, occiput smoke-grey ; frontal callus and shining, tumid, 

 central portion of face ochre-yellow; ocellar spot dark 

 brown, face unspotted ; under surface of head clothed with 

 pale yellowish hair; proximal joint of 7)fl//?i buff, terminal 

 joint ochraeeous-buff", clothed on outer side with minute, 

 appressed, brown or dark tawny hairs: antennoi ochraceons- 

 buff, first and second joints clothed with minute brown hairs, 

 upper angle of second joint moderately produced, third joint 

 with apical aunuli black and with very long upper branch. 

 Thorax : dorsum clothed with buff-yellow hair ; pleurae 

 and pectus cream-buff, clothed with pale yellowish hair. 

 Abdomen : dorsum clothed for most part with ochre-yellow 

 hair, on dark markings with dark brown hair; anterior 

 margin of interrupted transverse band on second and third 

 segments curved, with convexity directed forwards, inner 



I 



