22G Mr. T. D. A. Cockercll — Descriptions and 



wings 5 ram. long, strongly dusky throughout, stigma and 

 nervures dark reddish brown. Wing-nieasuremeuts as 

 follows ill iJb : depth of stigma 255 ; length of marginal cell 

 1632; depth of marginal cell 425 ; upper end of second t.-c. 

 to end of marginal cell 935 ; second s.m. on marginal 476 ; 

 length of outer side of second s.m. 510; first discoidal on 

 second s.m. 153; greatest length (diagonally) of first dis- 

 coidal 1445 ; third discoidal on second s.m. 595 ; end of 

 second r. n. to end of second s.m. 51 ; basal nervure on 

 first s.m. 272; b. n. on first discoidal (not allowing for 

 curve) 578 ; length of t.-m. 408. 



Hab. Fossil in the Miocene shales of Florissant, Colorado, 

 at Station 14 [W. P. Cockerell). 



Basypoda comberi, sp. n. 



$. — Like D. Jo/Mm^^es (Panz.), perhaps averaging rather 

 smaller, with the hair of head and thorax above entirely 

 fulvo-ochraceous, without black or fuscous. Wings duskier, 

 especially the broad apical margin ; knees, tibiae, and tarsi 

 ferruginous, outer side of anterior tibias dusky ; thick fringe 

 of fifth abdominal segment, and hair of apical segment, 

 warm ochraceous, not at all sooty or black; scattered hair 

 between the abdominal bands partly black and partly 

 ochraceous. 



(^ . — Pubescence pale yellowish, almost grey, white be- 

 neath ; abdomen slender, about 2 mm. broad; flagellum 

 dusky ferruginous beneath; legs coloured as in female; no 

 dark hair on vertex; abdomen without black hair; sixth 

 ventral segment broadly eraarginate in middle, and with the 

 lateral margins raised and thickened. 



Hab. Karachi, India, 2 ? , 1 c? (E. Comber). British 

 Museum. The females are labelled April 1909. The genus 

 is new to India. 



In Friese's table of Palaearctic species the Indian species 

 falls between D. plumipes and D. panzeri, having rather the 

 coloration of the latter, while the abdomen is formed as in 

 plumipes, only rather more slender in the female, con- 

 siderably more in the male. In the female the third 

 antennal joint (ahout 425 p,) is equal to the next two com- 

 bined. It is evident that D. plumipes, var. favescens, Friese, 

 from Egypt, is very like our insect, being substantially a 

 2)lwnipes coloured like panzeri; but, so far as Friese's account 

 shows, the legs of fiavescens are as in plumipes, and the 

 colour-peculiarities seem to be confined to the abdomen. 

 D. yrohmumii, Spinola, from Sicily, has the legs coloured 

 as in D. comberi, but it is a large form like D. visnaga. 



