EtJDOREA FllEQUENTELLA. 191 



submitted to my friend Mr. C. P. Hobkirk, who named 

 them Isotheclum myurum, and Hypnum cupressiforrne 

 var. datum-, and at the end of July and the beginning 

 of August a beautifully marked series of Scoparia 

 mercurella was produced from the larvae. 



On the 16th of April I described the larvae as 

 follows : 



Length about half to five-eighths of an inch, and 

 moderately stout ; head polished, with the ]obes 

 rounded ; it is scarcely so wide as the frontal plate, 

 and still narrower than the third segment ; the body 

 cylindrical, and of almost uniform width, tapering 

 only a little at the posterior extremity ; segmental 

 divisions deeply cut ; skin smooth and slightly glossy ; 

 the frontal and small anal plate, with the large round 

 tubercles, polished. 



In adult specimens the ground colour is a dingy 

 straw-colour, but in young examples it is strongly 

 suffused with a darker dirty greenish tinge, which 

 dark colour seems to be gradually lost as the larva 

 attains maturity. Head dark brown, with frontal 

 streak and mandibles still darker sienna-brown ; 

 frontal plate very dark sienna-brown, almost black 

 indeed; tubercles olive-brown, the anal plate with a 

 slightly greener tinge. A very faint, narrow, brown, 

 pulsating vessel forms the dorsal line, but there are no 

 perceptible subdorsal or spiracular lines. 



The ventral surface and prolegs are the same colour 

 as the ground of the dorsal area, and placed trans- 

 versely on the fifth and sixth segments are three olive 

 tubercles ; the legs are black, ringed with olive. 

 (George T. Porritt, 15th February, 1886; E.M.M., 

 April, 1886, XXII, 260.) 



