the Biology of some British Neurojptera. 583 



long, of flattened oval shape, somewhat broader at the 

 micropylar end, with a pointed micropylar cone. The 

 colour is pinkish-orange when first laid, darkening slightly 

 to brown at the end of a week. Hatching takes place 

 in from one and a half to two weeks. 



The young larva is -6 mm. long, orange in colour, and 

 but for the absence of food in the alimentary canal, which 

 gives the darker central spot to the later larva, does not 

 differ materially from the form of the third-instar larva. 

 Owing probably to some peculiarity of diet, it has been 

 found impossible to breed this species, but I do not think 

 it can differ much from other Coniopterygidae. Full-fed 

 larvae can be obtained by beating pines, throughout the 

 summ.er. 



Description of Third-instar Larva. (Plate XLIII, fig. 2.) 



Length about 2 mm., shortly fusiform. Colour orange-brown 

 with lateral Avhite spots and a dark brown central spot, due to the 

 contents of alimentary canal. 



Head small and rounded, colour yellowish. !Eyes reddish. 

 Antennae colourless, short and two-jointed, the second joint about 

 twice the length of the first. Palpi colourless, club-shaped. 



Body colour orange-brown. Extending generally from the hind 

 part of the jDrothorax to about the 2nd abdominal segment is a 

 dark biown spot, varying somewhat in colour with the contents 

 of the crop. The anterior part of the thorax is white, and there are 

 two pairs of large white spots laterally in the thoracic region. The 

 hind pair of these continues into the 1st abdominal segment. Two 

 more white spots usually occur on each side of the mid-abdomen. 

 It will be seen that all these markings are dependent on the colour 

 of internal organs, and hardly, if at all, due to pigment in hyjiodermis 

 or chitin, consequently they are liable to vary considerably, and it is 

 therefore useful to find a structural character, which, so far, appears 

 fairly constant for the genus Coniopteryx. At the extremity of the 

 tarsus, projecting dorsally over the tarsal claws, are a pair of setae, 

 conspicuously stronger than any others, curved slightly and ending 

 bluntly, almost in a knob. In Sonidalis, these setae are fine and 

 curved, but not blunt ended, while in Comcentzia they are long and 

 tapering. The legs are yellowish and translucent. 



When full fed the larva spins a small, flat, white cocoon, 

 of 2-3 ram. diameter, on the inner flat face of a jjine 

 needle, in the sheathing base of two needles, or anywhere 



