142 E. E. AUSTEN. 



Genus Corizoneura, Kond. 

 Corizoneura formosa, sp. n. 



(J. — Length (4 specimens) 20 to 21*4, mm. ; width of head 6 to 6*4 mm. ; distance 

 from upper margin of occiput to anterior extremity of face 5 to 5'25 mm. ; length of 

 proboscis 13 to 15 mm. ; length of wing 17'4 to 18 mm. ; wing-expanse 21*5 to 23 mm. 



Dorsum of thorax dark olivaceous black, with broad smoke-grey lateral borders clothed 

 with cream-coloured hair, and with two narrow, smoke-grey, admedian, longitudinal 

 stripes ; dorsum of abdomen ochraceous tawny, with distal extremity (fifth to seventh 

 segments) infuscated (iron-grey to olivaceous black), a large black median blotch on 

 each of the first four visible segments, and fourth segment bordered posteriorly with 

 appressed, silvery white and ochreous hair ; venter cinnamon-buff or cinnamon-coloured, 

 with last three segments sometimes mouse-grey and lateral extremities of first visible 

 scute neutral grey ; wings with a sepiaceous tinge ; processess at tips of first and second 

 joints of front tarsus in ^ very long. 



Head : face bluntly conical, moderately produced ; front and face (except sides of 

 facial prominence below, which are clove-brown and shining) pinkish buf! pollinose, 

 front and borders of face adjacent to eyes clothed with longish, cream-buff hair ; 

 occiput smoke-grey, clothed above with cream-buff, below with whitish hair ; jowls 

 and basi-occipital region pale smoke-grey, clothed with long whitish hair ; palpi russet, 

 dark brown on outer side, proximal joint with a bunch of whitish hair at base below; 

 first and second joints of antennae isabella-coloured pollinose, clothed above and 

 below with longish hair, generally black or blackish but sometimes mainly cream- 

 coloured on first joint, third joint ferruginous or vinaceous rufous, clove-brown 

 at tip. Thorax : dorsum, including scutellum, clothed for most part with somewhat 

 appressed, cream or cream-buff-coloured hair, often but little visible when regarded 

 from above, hair above lateral borders between bases of wings often largely or mainly 

 dark brown, pleurae and pectus clothed with fairly long, w^hitish or yellowish white 

 hair. Abdomen : except on first (visible) tergite, on which median blotch extends* 

 to or is but narrowly separated from hind margin, black median blotches, which 

 rest on front margin, do not reach hind border ; posterior angles of first and second 

 tergites clothed with yellowish or whitish hair, hind border of second tergite with 

 a patch of ghstening, appressed, ivory-yellow or cream-buff- coloured hair in middle 

 line, light-haired hind border of fourth tergite expanded in middle line and at each 

 extremity, lateral extremities of sixth and seventh tergites generally clothed with 

 glistening silvery white hair, lateral extremities of second to fourth tergites inclusive, 

 except as already stated, clothed with black hair, ochraceous tawny area of first and 

 second tergites clothed mainly with minute, ghstening, appressed, ochreous hairs, 

 corresponding area on third and fourth tergites clothed with minute black or blackish 

 hairs, fifth and sixth tergites (except lateral extremities in case of latter) clothed 

 with black hair ; venter clothed with minute, appressed, ghstening, cream-buff- 

 coloured hairs, fifth sternite sometimes largely clothed with minute, black or blackish 

 hairs. Wings : veins sepia-coloured, adjacent membrane suffused with same colour 

 at base, and to a less extent at level of proximal extremity of discal cell. Squamae 

 waxen ochraceous buff or pale orange-yellow, fringed with minute yellowish hairs. 

 Halteres light chestnut-brown, tips of knobs light buff or light ochraceous buff. 

 Legs : coxae neutral grey, clothed with whitish hair, which is longer on front pair ; 



