Genera and Sjiccies 0/ TabaiiiJae. 23 



species, a further means ot" distinction is furnished by the 

 uholly bhiek antenuie. 



Although the type of the present species is denuded, the 

 characteristic wing-markings are quite distinctive as regards 

 tlic other speciis of Clirysops at present known from 

 ^ladagascar, and the description printed above is therefore 

 sutHcient for practical purposes. The details of the body- 

 markingSj if any, cannot be determined until further speci- 

 mens are obtained. It may be noted that the type of 

 C. insulcnsls was erroneously assigned, by j\liss llicardo 

 (Ann. & Mag. Nat. Hist. ser. 7, vol. ix., May 1902, pp. 369, 

 370) to C. luadagascarensis ; it is the second specimen 

 mentioned by the authoress, whose description of the 

 "shading" at the base of the wing is in reality taken from 

 the type of the present species and uot from that of C. mada- 

 gascurensis, in the wing of which the basal cells, with the 

 exception of their distal extremities, are entirely clear. 



Chrysops Uoydi, sp. n. 



? . — Length (4' specimens) 6'4 to 8 mm. ; width of head 

 2*2 to 2"4 mm. ; width of fjont at vertex 0*6 mm. ; length 

 of antenme 2'G mm. ; length of wing 6'6 to 7 mm. 



First joint of antetmce ochraceous ; body black, moderately 

 shining, dorsum of thorax with two conspicuous yellowish-grey, 

 pollinose, longitudinal stripes ; icings hyaline, a narrow costal 

 border clove-brown or black, and a broad and sharply defined 

 transverse band across middle purplish clove-brown or puiplisli 

 blade, the puryle tinge very noticeable when wings are viewed 

 at a certain angle ; distal margin of transverse band not 

 angulate, but convex towards tip of wing ; legs slender. 



Head black ; front, except frontal callus, clove-brown 

 oeellar spot and hind border of vertex, two small dark brown 

 spots connecting frontal callus with base of each antenna, 

 and a median saffron-yellow pollinose area below frontal 

 callus and between bases of antennae, ochre-yellow pollinose; 

 face, except shining black facial tubercles, and basioceipital. 

 region bright saffron-yellow pollinose; greater part of each 

 jowl occupied by a large, shining black area, extending in- 

 wards from lower margin of eye; basioceipital region and 

 front behind frontal callus clothed with pale yellow hair; 

 upper part of o. ciput with an ochre-yellow pollinose, elongate 

 fleck on each side of median downward extension of oeellar 

 spot; frontal callus shining black, prominent, roughly oval 

 in outline, narrowly separated from eye on each feide, its 

 transverse diameter the longer ; facial tubercles roughly 



