LARV^ OF BRITISH PTEROPHORI. 97 



green, dorsal line reddish-violet, narrow on the 11th, 12th, and 

 13th segments, hut swelling out into a stripe on the 2nd to 6th 

 segments inclusive. The larva failed to pupate, and I am still 

 wanting figure and description of the pupa. Strange to say, 

 C. rhododactylus seems to have disappeared from its well-known 

 localit}^ in Kent, and I have not been able to meet with it in a 

 less-known locality in Middlesex since 1878. As I remarked in 

 a former paper this insect will probably be found in other places 

 where dog-rose abounds. It is more likely to be met with in the 

 larval stage, by those who will seek it at the time and in the 

 situation referred to above. The imago is rather sluggish, 

 and does not often fly in the daytime. It has been taken 

 at light. 



Platyptilia bertrami, Rossi. — Larva, end of May and beginning 

 of June, on yarrow (Achillea), eating young shoots, and slightly 

 excavating the young stems. I took about a dozen imagines of 

 this species at Mill Hill last July, on a railway-bank, and shall 

 endeavour to find the larva there this year. 



P. isodactylus. — According to Mr. C. G. Barrett this species 

 is double-brooded. Larva, May and August, mining shoots of a 

 marsh species of ragwort [Senecio aquaticus). As Mr. Barrett's 

 very lucid and complete account of the habits of this larva is 

 accompanied by a description of the larva itself from the pen of 

 the late Mr. Buckler, my wish to re-describe it may apj)ear 

 superfluous, not to say egotistical. I may say in justification 

 that in this instance, as in all others where a plume larva has 

 already been described, I am only induced to re-describe that the 

 descriptions may be formed on a fairly uniform plan, and in this 

 way facilitate comparison. The addition of figures illustrating 

 mode of feeding appeal to the eye, and, in conjunction with notes 

 on the same subject, enable the "larva-hunter" to engage in his 

 work with some prospect of success. 



Amhlyptilia acanthodactyla. — Larva, in July, on rest-harrow 

 [Ononis), hedge-woundwort (Stachys sylvatica), wild basil [Cola- 

 mintha clinopodium), a species of wild mint {Mentha), &c. ; also in 

 gardens, on geranium and pelargonium. At Ventnor, on August 

 30th, 1883, I found a number of larvae feeding on the flowers 

 and unripe seeds of Stachys sylvatica. I have descriptions of larva 

 and pupa, but no figures. 



A . cosmodactyla { = punctidactylus), — Larva, in June and July, 



ENTOM. — APRIL, 1885. O 



