LIFE-HISTORIES OF SAWFLIKS. 245 



up knob, as if there were a tenth joint. Thorax but little 

 wider than the head, entirely black, even the apices of the 

 prothorax being of that tint; the sides very shining. Wings 

 strongly iridescent, nervures brown, costa fuscous ; stigma 

 whitish in front, dark grey behind. Abdomen narrower than 

 the thorax, elongate, entirely black, with the exception of a 

 tinge of pitch-brown on the anal valve. Legs black from the 

 insertion of the coxae to two-thirds of the length of the 

 femora, the remainder reddish yellow, excepting the last joint 

 of the intermediate and posterior tarsi, which are dull black. 



Female. — Four to five millimetres. Resembling the male, 

 with the following exceptions: — Head somewhat more pro- 

 jecting; antennae not longer than half the body, entirely 

 black and thinner; ninth joint shorter than the eighth, and 

 wanting the bent knob at the end. Abdomen broader in the 

 middle than the thorax ; the valves of the saw project very 

 far, and are covered with hairs ; above them are two ab- 

 dominal processes. The saw is of a very pale brownish 

 yellow. 



As regards coloration, this insect entirely agrees with 

 Pristiphora testaceicornis of St. Fargeau, as described by 

 that author and Stephens, but it is entirely different as re- 

 gards the neuration of the wings, as in the species described 

 by the writers above mentioned the first submarginal cell is 

 stated to be very large, and to receive the two recurrent 

 nervures which in the present species are received by the 

 second submarginal. 



Cryptocampus Mucronatus, King. 

 {Hartig, Blatt und Holzwespen, p. 223, No. 2.) 



Cryptocampus niger, in dorso thoracis suhpubescens, an- 



teunis in mare hrevibus, crassis, brunueis, in femina 



brevioribus nigris, alarum sligmate in femina tantum 



bicolore, pedibus e brunneo luteis, coxis fere totis 



nigris, 



I am not sure whether this species is indigenous, but as it 



occurs in the countries both to the east and west of us, in 



Germany and England, it may be considered probable that 



it is to be met with here. I add the description to that of the 



preceding species on account of the great similarity of 



the two. 



Mucronatus lives in the sickly swollen twigs of a species 

 of willow {Salix) ; I received the galls, if I may so call them, 



2k 



