1920] . Holland, Lepidoptera of the Congo 257 



formly dark brown, without any traces of translucent spots or other inaculation. 

 Cilia concolorous. On the under side both wings are colored as on the upper side, 

 but are slightly paler in their ground-color, and near the base are clothed with 

 ochraceous scales. The hind wings on this side reveal a dark subcircular and some- 

 what diffuse spot in the cell at its extremity and this is followed externally bj^ a post- 

 median dark band, which corresponds in its curvature to the outer margin. Expanse, 

 32 mm. 



Two specimens were taken by the Lang-Chapin Expedition at 

 Niangara in November 1910. One of these, which I designate as the 

 tj'pe, is in The American Museum of Natural History; the other, 

 which I designate as the paratype, I have the pleasure of retaining for 

 the Holland Collection in the Carnegie Museum. 



I append a brief key for the determination of the four species of the 

 genus Leptalina now known to occiu' in Africa. 



A. Hind wings marked on the under side by light longitudinal lines. 



1. Hind wings marked by two conspicuous silvery white lines, running through 



the cell from the base to the outer margin, the upper line broader and 

 most conspicuous lepeletieri (Latreille). 



2. Hind wings having the nervules, especially in the outer half of the wing 



covered with white scales, causing the veins to stand out clearly against 

 the darker ground-color tsita (Trimen). 



B. Hind wings not marked on the under side by light lines, running from the base 



toward the outer margin. 



1. Fore wings with three minute translucent subapical fi\)ois.. inornatus (Trimen). 



2. Fore wings without tran.slucent spots; hind wings on the under side with an 



obscure dark subcircular spot at the end of the cell, followed by a cloudy 

 dark postmedian transverse band niangarensis Holland. 



Chapra Moore 



(464) 1. Chapra mat hias (Fabricius) 



Hesperia mathias Fabricius, 1798, Ent. Syst., Suppl., p. 436. 



(For synonymy cf. Holland, 1896, Proc. Zool. Soc. London, p. GO.) 



One male caught at Boma, June 15, 1915. 



Parnara Moore 



(465) 1. Parnara borbonica (Boisduval) 



Hesperia borbonica Boisduval, 1833, Faune Ent. INIadgr., p. 6.5, PI. ix, figs. .5, 6. 

 (For additional synonymy cf. Holland, 1896, Proc. Zool. Soc. London, p. 62.) 



There are two specimens of this common insect in the collection, 

 one taken at Faradje, December 6, 1912, and another at the same place, 

 labelled "1911-1912." 



