NOTES ON AN UNSUCCESSFUL ATTEMPT TO BREED COLIAS RDUSA. 213 



andthe other ends l)right red; the inner sides of the bind tibi* are 

 also violet, while their ends, as well as the inner row of spines upon 

 them, are bright red. In StitlmplujiHo t'liKcinn, Pall., the bind femora are 

 brigbt red below, and, on the inner side, are yellow witb a black 

 marking, which consists of a spot located above and nearer the base, 

 and a semicircular transverse stripe ; the ends of the femora are also 

 black, the hind tibia' are black basally, then follows a yellow ring, and 

 the remaining length, including the spines (only the lips of which are 

 black), is red. The general l)ody colour of Arridiuin (iriii//itiii)ii, 

 L., is dirty grey ; the inner faces of the hind feiuora are reddish-grey 

 with reddish veinlets, while below they are bright red ; the inner 

 faces of the hind tibiie and the tarsi are lilac, becoming brighter 

 terminally : besides, the tiliial spines are white at the bases sharply 

 passing into reddish-brown and l^ack at the tips. 



(To he concluded. \ 



Notes on aa unsuccessful attempt to breed Colias edusa. 



By J. C. DOLLMAN. 



Two female imagines of ( 'dlian nhisa were caught at Ditchling Beacon 

 on Septemlter oth, 1900, and placed on a clover plant in a large flower- 

 pot, and the first egg was deposited on September Hth. Pellets of 

 cotton-wool soaked in treacle and water were dropped in the pot, on 

 which the insects fed until the li'jth of the month, when they died. 

 The eggs were shaped like a nine-pin, with a sharply-pointed upper 

 extremity, and Avere laid on the lower as well as the upper side of the 

 leaAes. Their position was at right angles with the surface of the 

 leaf, and they were of a bright yellowish-white colour until the 11th 

 of the month, when they began to change colour, turning to a rich 

 saffron -yelloA\, gradually deepening to strong sienna red-brown. The 

 tip always remained light yellow. The ova turned dark grey in colour 

 on the 16th and hatched on the 17th. The young larva partly devours 

 the eggshell after emergence, and when seen through the microscope 

 is deep saffron in colour with a black head. The head is larger than 

 the body segments, which gradually taper to the anal end, the last being 

 the smallest of them all. The segments are distinctly marked with a 

 sharp skinfold, and are all strongly wrinkled transversely. The entire 

 larva, including the head, is profusely dotted with white warts 

 arranged in longitudinal rows and which emit white hairy projections 

 thickened and club-shaped at the tips. The length of the young larva 

 upon emergence is rather over y^eth of an inch, and it appears, almost 

 invariably, to feed upon the upper side of the leaf. In two or three 

 days the young larva had filled out and grown to be almost ^th of an 

 inch in length. The body was then shiny in appearance, with every 

 segment strongly emphasised by the skinfold, and between the folds 

 the skin on the segments was strongly wrinkled transversely. On the 

 skinfolds determining the segments were white protuberances, and a 

 few black and white ones on the body generally, which was finely 

 reticulated with minute black dotting. The head was still black, with 

 strong hairy club-headed projections of a whitish tint developed freely 

 upon it. On the second segment, immediately beyond the head, was 

 a row of five or six black warts. The habit of the larva was sluggish, 

 as it had been from the first, the creature being extended at full length 



