BASSUS. 281 



centrally elevated and impressed ; three basal segments closely, 

 distinctly, and rugosely punctate, narrowly stramineous apically, 

 with the two posterior ceutrally interrupted ; basal halt' of fourth 

 and basal third of fifth rugulosely puuctate, apical half of fourth 

 sparsely punctate ; second to fifth segments transversely im- 

 pressed. Legs : anterior pairs flavous, with their femora and the 

 hind coxa) subfulvous ; hind femora fulvescent, their tibiae flavous 

 to shortly beyond the centre, with the apex and their tarsi black. 

 Wings hyaline, with the stigma and nervures black. 



The 5 differs only in having the epistoma black, the propleurae 

 immaculate, the metapleurae finely punctate below, and the hind 

 tibiae blackish at the extreme base. 



Length t> millitn. 



ASSAM : Shillong, 6000 ft., vi. 03 (Rowland Turner) ; BENGAL : 

 Bettia, iii. 08, and Katihar, iii. 09 (7. Paivalnd. Mus.) ; 

 CEYLON : Peradeniya (E E. Green). 



This species is said to be allied to the Palaearctic B. multicolor, 

 Grav., from which it materially differs in the abdominal color- 

 ation, and from all the members of this restricted genus, with 

 which I am acquainted, in having the base of the o hind tibiae 

 entirely pale. 



It has been bred by Mr. Ernest E. Green, at Peradeniya, from 

 the larvae of Syrphid flies preying upon the Tea Aphis (Ceylonia 

 theicola, Buckton). 



199. Bassus clotho, sp. n. 



d 1 $ . A small and stout species, with the head, thorax, scu- 

 tellum, and apices of the segments, broadly flavous ; the legs 

 mainly pale and the hind tibiae broadly pure white. Head hardly 

 narrower than thorax, flavous, with its base black to the scrobes ; 

 face finely and evenly punctate, somewhat nitidulous ; clypeus 

 small and apically subincised. Antennae, basally flavous beneath. 

 Thorax stout and finely punctate, black, with prosternum, hamate 

 callosities before radices broadly, others beneath all radices, and 

 a basal perpendicular fascia on base of mesopleurae, flavous ; rneta- 

 thorax rugose and strongly carinate, with the areola small, distinct 

 and subquadrate, apically emarginate ; petiolar area large and 

 subtriaugular, apically impressed on either side ; metapleurae 

 glabrous below, and punctate above, the lateral carinaj. Scutellum 

 and postscutellum entirely flavous-. Abdomen rugulose and some- 

 what broad, with the strongly transimpressed four basal segments 

 very broadly, the remainder very narrowly, bright flavous apically 

 both above and below ; $ with second to fourth segmental bands 

 centrally interrupted ; first segment strongly and subcoalescently 

 bicarinate at base, anus with griseous pilosity. Legs flavous, 

 with the hind femora fulvous ; hind tibiae and tarsi black, with 

 the centre only of the former clear white. Wings broad and 

 hyaline, with no areolet, and the stigma piceous ; radix and 

 tegulae flavous. 



Length 5 millim. 



