18 ANTHROCERA EXULANS. 



3 \ to 4 lines in width, somewhat fusiform, rising con- 

 vexly in the middle, bluntly rounded off and rather 

 flattened at each end to the surface on which it is spun 

 (generally some rock or stone) ; it is usually very 

 smooth, though sometimes a few slight longitudinal 

 wrinkles are towards the front or roundest end ; it is 

 of a light pearly-greyish tint with more or less of a 

 silvery lustre, and after the moth has escaped is semi- 

 transparent. 



The pupa is from h\ to 6 \ lines long, and sometimes 

 works its way quite out of the cocoon before the moth 

 is disclosed ; it is of the usual Anthrocera form, with 

 long antenna- and leg-cases, free nearly their whole 

 length, the shortest wing- covers, with nervures in 

 strong relief, have their margins prominent from the 

 body, the abdomen tapers just towards the rounded-off: 

 tip, and across the back of each ring anteriorly is a 

 narrow ridge thickly set with most minute hooks 

 pointed backwards ; the colour is blackish-green on 

 the abdomen and all the other parts black, and with 

 rather a dull surface. (W. B., 30, 10, 83 ; E.M.M. 

 XX, 150.) 



AnTBROOERA LONIOBR^l. 



Plate XIX, fig. 3. 



Early in June, 1867, I had the pleasure to receive 

 from my kind friend Mr. Doubleday, a dozen larvae of 

 this species feeding on the yellow vetchling (Lathy rus 

 pratensis) ; they fed well for about a week, and then 

 began to spin their cocoons,* some yellow and others 

 white, and the perfect insects came forth from the 7th 

 to the 16th of July. 



* It seems that the colour of the cocoon cannot be used as a character 

 whereby to distinguish our five- spot Burnets from our six-spot Burnets 

 when in the pupa state. 



