210 SYKPHID^. 



fine, yellow on yellow parts, dark brown on black parts. 4th seg- 

 ment with close yellow, yellowish-grey or orange tomeutum ; 

 hind margin more or less moderately shining brown or blackish ; 

 a bow-shaped or inverted V-shaped mark, which may be deep 

 orange, brown or black, lies (tlie convexity forwards) across 

 middle of segment ; space between it and the dark hind margin 

 (wiiich latter is not always definite) darker than on anterior half 

 of segment. Pubescence of 4th segment all yellow except on the 

 dark parts. Yenter yellow with yellow ish pubescence, tip darker. 

 Legs : coxse black, a little grey dust on front side of anterior pairs 

 and on hinder side of hind pair, with a little pale pubescence. 

 Eemora shining black, anterior pairs with tips narrowly brownish- 

 orange ; middle pair in S with a small tooth near base and 

 suddenly contracted at tip. Pubescence of all femora wholly 

 yellow except some moderately long black pubescence towards tip 

 on under side of hind pair. Tibiae black; about basal half of 

 anterior pairs orange-yellow ; middle pair in S with a small 

 swelling just before middle and slightly thickened towards tips; 

 rather long yellow hair on outer and front siiles of fore pair ; 

 pubescence very short on middle pair; hind tibite distinctly curved, 

 with mainly black pubescence, but some yellow pubescence on 

 basal half of outer side. Tarsi black, with black pubescence, middle 

 pair more or less brownish-orange on basal half; a peculiar fan- 

 like fringe of hairs with thickened tips at extreme base of hind 

 metatarsi. Wings pale grey ; squamae yellow with yellow fringe ; 

 halteres yellow. 



Lengthy 10-12 mm. 



Described from a number of specimens of both sexes. In two 

 <5 c? in the Indian Museum from Calcutta, 21.iii. 1^07 {Brunetti), 

 and Siripur, Sardu, North Bengal, 26. ix. 1910, and in two more 

 ■ c? c? in the Pusa collection from Pusa, 14.viii.l907and 29. ix. 1910, 

 the yellow spots on the 2nd segment are reduced to a semicii-cle 

 by a large central black spot in each, also the 3rd segment is 

 mainly blackish. The species is apparently widely distributed 

 throughout India, as I have seen it from Katmandu, Nepal ; 

 Calcutta ; Deesa, vi. 1897 {Nurse)\ Pusa, Ani. viii. ix. ; Banoalore ; 

 yibsa>;ar, N.E. Assam {S. E. Paul). De Meijere records it from 

 Java, and Kertesz (Cat. Dipt, vii, p. 250) gives " Southern Asia, 

 Indian Archipelago." 



H. pili'pea, Dol., has been regarded as synonymous with this 

 species, but I have withdrawn the name as I am not satisfied 

 that it is identical. Bigot's type of Emnerosijrphus indianus is a 

 S of hengalensis. 



166. Helophilus quadrivittatus, Wied. (PL V, figs. 4, 5.) 



Eristalis quadrivittatus, Wiedemann, Zool. Maj^. i, p. 3 (1819); 

 id., Auss. Zweifl. ii, p. 168 (1830) ; de Meijere, Tijd. v. Eat. li, 

 p. 234, S $ redescr., pi. vii, fio;. 15, hind leg: (J908); Brunetti, 

 llec. lud. Miis. ii, p. 69 (1908) ; i, pi. xii, figs. 4, 5, 6, abdomen 

 6 2 (1907). 



