CEAMBUS CONTAMINELLUS. 305 



dark sienna-brown, almost black, indeed; a darker 

 pulsating vessel, varying in colour in different speci- 

 mens from grey to greenish, forms the dorsal stripe, 

 but there are no subdorsal or spiracular stripes ; the 

 tubercles are of a darker shade of the ground colour, 

 and in each is a small black spot, from which springs 

 a short black hair. The ventral surface is of the 

 colour of the ground of the dorsal area; the anterior 

 legs are ringed, and the ventral legs margined, with 

 dark brown. 



It lives in a gallery of silk, constructed in an up- 

 right position on the stem of the food-grass, but close 

 to the root, in the same manner as does the larva of 

 G. perlellus. 



The cocoon is about five-eighths of an inch long, 

 a quarter of an inch wide, and is firmly constructed. 



The first moth appeared on the 28th of July, the 

 others at intervals until the 23rd of August. (George 

 T. Porritt, 5th April, 1886; Entom., May, 1886, XIX, 

 130.) 



Ceambus SELASELLUS. 

 Plate CLX, fig. 9. 



On the 4th of September, 1877, I received from 

 Mr. W. R,. Jeffrey a batch of eggs laid loose by a cap- 

 tured female of this species. 



The eggs were at first whitish, soon turning yel- 

 lowish-ochreous, and by the 11th brownish-ochreous, 

 without gloss, some being quite dark brown by the 

 22nd. 



The shape of the egg is elliptical, the surface ribbed 

 longitudinally. 



On the 30th of September they began to hatch. 



The newly-hatched larva is pinkish-ochreous or 

 pinkish-brown ; the head and second segment are 

 black. 



These larvae were placed on a turf of several 



VOL. ix. 20 



