136 [June, 



in appearance, and exactly resembles white tissue paper ;* it is firm in texture, and 

 so opaque that the enclosed pupa is quite invisible : at one end of it the larva spins, 

 for the escape of the imago, a remarkable tube, which projects tlirough llie end of 

 the outer cocoon. The two cocoons are so separate from one another that, after 

 enlarging the exit-hole in the outer one, I was able, with the help of the forceps, 

 to pull the inner one (cont;iining the pui)a) completely out through the aperture 

 without tearing or damaging either. 



The imagines, resulting from the larvfe received in 1901, emerged 

 July 7th-12th of that year. Those from the larvae received last year 

 appeared June 14th-:30th last. The species is much less particular 

 than many as to the hour of leaving the pu|ia. My detailed obser- 

 vations show that individuals emerged at almost all hours of the (hiy 

 and night, but the period 9-11 a.m. was easily first, while the period 

 1-3 p.m. came second, in point of favour. The moths, in the very 

 long and beautiful series before me, are singularly constant in faeies, 

 showing no variation worthy of mention except in point of size. 



Norden, Corfe Castle : 



January IMh, 1903. 



A NEW SPECIES OP LYC^NID FROM UGANDA AND LAKE 

 VICTORIA NYANZA. 



BY a. A. NEAVE, B.A. 



Pentila clarensts, n. sp. 



(Ty])e (^ from Toro Uganda, in the Hope Collection, Oxford 



University Museum). 



Allied on the one hand to P. amenaidn. Hew., and P. mombasn', Grose-Smith, 

 and on the other to P. pauJi, Staud., the affinity to the latter species being the 

 more pronounced. (J. Expanse, 38"5 mm. 



Upper-side: pale fulvous orange, with a few black spots. Hind margins of 

 both wings bordered with dull black. This border is smooth across the apex of the 

 fore-wing but serrated elsewhere. There is also a narrow black border along the 

 costa of the fore-wing. In both wings a terminal discocellular spot. 



The fore-ivinff has three sub-costal black spots immediately above the upper 

 border of the cell. TSelow the cell is a larger spot between the 1st and 2nd 

 median nervules. Tliere are no spots within the cell Along the hind mai-ginal 

 border is a small discal row of two, or sometimes three minule >po1s. These are 

 evanescent in the specimen from Nyangori. 



The hind-wivg has two spots on the costal margin, which may or may not be 

 somewhat evanescent. Running parallel with the black hind margin is a discal 

 row of small spots, usually five in number, of which the one nearest the cosia is 



* Fray's description (Linn. Ent., xiv, 186) is almost identical, for he compares the cocoon to 

 " silver-white silk paper." 



