. British naturalist. 40 THE BRITISH NATURALIST. [February Larva.—The description of the larva, according to Mr. Porritt, is as follows :—" Length about half-an-inch, and of the usual stumpy form when at rest. Head small and narrower than the second seg- ment, it has the lobes rounded, and is highly polished ; body cylind- rical, attenuated a little posteriorly, each segment plump and distinct^ making the divisions clearly defined ; skin soft and sparingly clothed with short hairs. There are two distinct forms, and intermediate varieties occur, partaking more or less of each of these extr
. British naturalist. 40 THE BRITISH NATURALIST. [February Larva.—The description of the larva, according to Mr. Porritt, is as follows :—" Length about half-an-inch, and of the usual stumpy form when at rest. Head small and narrower than the second seg- ment, it has the lobes rounded, and is highly polished ; body cylind- rical, attenuated a little posteriorly, each segment plump and distinct^ making the divisions clearly defined ; skin soft and sparingly clothed with short hairs. There are two distinct forms, and intermediate varieties occur, partaking more or less of each of these extreme forms. A'ar. I has the ground colour deep purple ; head yellowish-grey or yellov^-ish-brown, marked on the crown and sides with black, the mandibles brown ; medio-dorsal stripe smoke-coloured ; sub-dorsal lines, and another line of equal wddth below it, white, but interrupted and not very conspicuous ; and below these is another scarcely so pale line along the spiracles ; hairs and the distinct tubercles white, ventral surface and prolegs greenish olive ; anterior legs shining black, ringed with paler. A^ar. 2 has the ground colour bright pale green ; head as in var. i ; the dark, smoky-coloured pulsating vessel—in some specimens tinged with pink anteriorly—forms the dorsal stripe ; sub- dorsal lines indistinct—whitish ; below^ these is another line, but much interrupted, and broken into short lengths ; there are no lines along the spiracular region ; hairs and tubercles white ; ventral surface and prolegs of the bright green of the dorsal area ; the legs shi-iing black, tinged with white" (" Entomologists' Monthly Magazine," Vol. XXIIL, pp. 132, 133). The larvae from w^hich these descri2)tions were made were received from Mr. Eustace Bankes, of Corfe Castle, and Mr. H. B. Fletcher, of Worthing, and were found feeding on Stachys sylvatica on August 25th and September 27th. Mr. Porritt bred the species on August 17th and 19th in 1884. Mr. H. D'Orvill
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