THE ENTOMOLOGIST. 409 



third spot below them ; between these spots are light, 

 squarish patches, giving the larva a mottled appearance ; 

 spiracular marks longitudinal-oval ; anal segment with a 

 triangular black plate. Feeds under Parmelia parietina, 

 whicii grows upon the rocks at Howth, Ireland, and on the 

 rocks on the coast at the Isle of Man, and is full fed in June. 

 It goes to pupa under its food-plant in a slight web, and 

 appears in the perfect state in July. — C S. Gregson ; Rose 

 Bank, Fletcher Grove, Edge Lane, Liverpool, April 1, 1873. 

 Description of a Psych ideoits Larva. — Mr. Hodgkinson 

 and myself discovered the above larvae on the rocks at 

 Howth, but though we took about one thousand in June, 

 1870, which produced thousands of young larvae the 

 following season, a fresh supply was obtained in 1872, 

 but no perfect insects were obtained. Failing to breed 

 it, and there being little probability that I shall ever have 

 another opportunity to do so, I purpose publishing the 

 description thereof under the name " Psyche Hiberni- 

 cella," leaving it to some more fortunate fellow- worker 

 to describe the perfect insect, when he or she discovers 

 it. Description made June 16, 1872: — Case obconical. 

 Length about two lines, broadish at the mouth. Larva 

 purplish brown, slightly pellucid below. Head shining, 

 black, with sharply defined corslets on 2nd and 3rd seg- 

 ments, having a long triangular suture through them, the 

 point being towards the head ; on the 4th segment in the 

 subdorsal region there is a faintly-defined, sunk, darkish, 

 somewhat triangular mark ; head and *.hree segments spiny ; 

 dorsal region dark, with sometimes faint indications of a row 

 of light spots, one on each segment; from subdorsal region 

 to under side lighter spiracles ; raised abdomen obconical ; 

 anal segment obtuse, slightly darker, and under the slight 

 power of a pocket-lens I lail to see the claspers, «/'any exist. 

 Legs long, spread out, the third pair especially so. The larva 

 leaves its case at pleasure, and roams freely. As I write I have 

 an open pill-box before me on a book, and since I commenced 

 this description about fifty larvae have spread themselves 

 from the box all over the book, twenty-one having old cases, 

 just as they were gathered from the rocks: thirty are without 

 cases, having left them in the pill-box ; some walking, as do 

 those having cases j others dragging the body along like a 



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