BASSUS. 281 



■centrally elevated and impressed ; three basal segments closelv, 

 distinctly, and rngosely punctate, narrowly stramineous apically, 

 with the two posterior eeiitrally 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 coxjo subfulvous ; hind femora fulvescent, their tibise flavous 

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

 Wings hyaline, with the stigma and nervures black. 



The 2 differs only in having the epistoma black, the propleuras 

 immaculate, the metapleurse finely punctate below, and the hind 

 tibiae blackish at the extreme base. 



Length 6 millim. 



Assam: Shillong, 6000 ft., vi. 03 {Rowland Turner); Bengal: 

 Bettia, iii. 08, and Katihar, iii. 0!) (C. Paiva—lndi. Mus.) ; 

 Ceylox : Peradeniya {E E. Green). 



This species is said to be allied to the Palajarctic 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 Iiaving the base of the o hind tibiae 

 entirely pale. 



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

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

 theicola, Buckton). 



19U. Bassus clotho, sp. n. 



d" $ . 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 tibias broadly pure white. Head hardly 

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

 face finely and evenly punctate, somewhat uitidulous ; clypeus 

 small and apically subincised. Antenuce basally flavous beneath. 

 Thorax stout and flnely punctate, black, «ith prosternum, hamate 

 callosities before radices broadly, others beneath all radices, and 

 a busal perpendicular fascia on base of mesopleura^ flavous ; meta- 

 t borax rugose and strongly carinate, with the areola small, distinct 

 and subquadrate, apically emargiuate ; petiolar area large and 

 subtriangular, apically impressed on either side; metapleuroe 

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

 and postscutellum entirely flavous. Abdomen rugulose and some- 

 what broad, with the strongly transimpressed four basal segments 

 very broadly, the remainder \'ery narrowly, bright flavous apically 

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

 centrally interrupted ; first segment strongly and subcoalesceutly 

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

 with tlie hind femora fulvous ; hind tibia) and tarsi black, with 

 the centre only of the former clear \\hite. Wings broad and 

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

 tegulaj flavous. 

 Length o millim. 



