18 THE ENTOMOLOGIST. 



valueless. The best way is to set them lengthwise on a narrow 

 strip of card not more than one-sixteenth of an inch wide, so that 

 it does not jiroject beyond the front coxae, and pin the card ; if the 

 insect is pinned in the ordinary way, the slender compressed 

 abdomen has a remarkable tendency to break off. Marshall's 

 Catalogue enumerates twelve species. Of these C. mixtus, Gr., 

 has been cut up. It is impossible to say what has not been 

 included under C. inigillator. Of Desvignes' species the only 

 true Campoplex is his C. myrtillus ; his C. henaultii is certainly 

 Casinaria vidua, Gr. and his C. placidus much resembles Lim- 

 neria vulgaris, Tschek, or it may possibly be a Casinaria ; it 

 is not a CamjJoplex. C. anceps, Holmgr. (Ent. Ann. 1874, p. 143), 

 C. ohreptans, Forst., C. confusus, Forst,, C. erythrog aster, Forst., 

 C. terehrator, Forst. (Trans. Ent. Soc. Lond., 1882, p. 149), C. 

 huccidentus, Holmgr., (Trans. Ent. Soc. Lond., 1884, p. 426), C. 

 nohilitatus, Holmgr., C. unicinctus, Holmgr. (non Grav.), C. tri- 

 sculptus, Holmgr., and C. tenuis, Forst., are now known as 

 British. C. imnctatus, Bridgm., C. costulatus, Bridgm., and 

 C. femorator, Bridgm., are new species. Holmgren says of 

 C. melanarius : — " Haec species structura metathoracis et abdo- 

 minis ad propriam subdivisionem forte rectius referenda " (Mon. 

 Oph. Suec, p. 37) ; later he considered it a Limneria. Tschek 

 includes it in Sagaritis. 



For outline figure of Camijoplex see Vollenhoven's ' Schetsen,' 

 pt. i., pi. ii., fig. 19. The species of this genus appear to be 

 exclusively parasitic on Lepidoptera (records to the contrary 

 belonging to other genera), and their economy is somewhat 

 peculiar, as the cocoon of the parasite is frequently spun under 

 and concealed by the larva-skin of its host. Boie says his 

 " C. cajce emerged from the head of the young larva of A. caja at 

 the end of June," but this may be a Limneria. Ratzeburg first 

 noticed this. He says : — " The larva (of Orgyla antiqua) remained 

 in good condition, but the parasitic larva (of Campoplex carbona- 

 rius) had gnawn through its belly and pupated in a white cocoon, 

 which closely adhered to the leaf; and it emerged as an imago, 

 through a hole in the back of the larva of about the size of a 

 millet seed" (Die Ichn., i. 93). A similar case is figured on 

 pi. ii., fig. 23, which represents the cocoon of C. eheninus under 

 the larva-skin of its host {Orgyia fascelina). PL ii., fig. 6, repre- 

 sents the hard, smooth, cylindrical, black-veined, brown cocoon 



