WILSON : HYMENOPTERA NEAR YORK. 



2 59 



them with all their feet excepting the last pair, the last segment 

 being pointed and raised. Imago : head, antennae, and the whole 

 upper surface of the body black; the legs uniformly pale red, 

 except the bases of the coxae, and the two hind legs having the 

 posterior portion of the tibiae and tarsi black. Wings : costal 

 nervure to the stigma pale red ; the other basal nervures to the 

 centre of each wing are pale red ; stigma black ; the marginal 

 nervures from the centre black. 



CIMBICIDES. 



€imbex sylvarum Fab. I had the pleasure of beating a larva of 

 this insect from birch in the autumn of 1884. It fed up, and 

 then made itself a leathery cocoon amongst dead leaves at the 

 bottom of the jar in which I had placed it, and went snugly into 

 its winter quarters. It remained there until the following June. 

 I was then expecting it coming out a fine imago, when lo ! out of 

 the leathery case emerged some ten or a dozen small Ichneumons 

 belonging to the Cryptidiae group, the name of which I have not 

 yet made out. These were not to be despised, though I should 

 have preferred the former. I went again this autumn, my object 

 being to secure more larvae, and, I am glad to say, was successful. 

 This time I beat five nearly full-fed ones, after four hours' beating, 

 which shows that they are not very plentiful. They are beautiful 

 fellows, an inch and a half long, with smooth white heads, and 

 small black eyes placed low down near the mouth, and a beautiful 

 blue line running down the centre of the back. This line begins 

 about the end of the second segment, and ends on the beginning 

 of the eleventh. Alongside this is another of a pale yellow 

 colour, which merges into the greener portion of the larvae. 

 The sides above the spiracles are studded over irregularly with 

 white spines or raised spots, the spiracles themselves being 

 black. 



Trichiosoma lucorum L. The larvae of this insect I found in some 

 numbers in Askham Bogs, on birches. It differs from T. sylvarum 

 in not having a blue dorsal line. In place of this a dark line 

 shows through the skin in some examples ; others are a regular 

 dark green, the upper surface of the head being brown. 



[Those species hitherto unrecorded for the Yorkshire fauna are 

 — as in former lists — marked with the asterisk (*). The list of 

 Yorkshire Sawflies, inclusive of the additions given above, now 

 amounts to 119 species. — W.D.R.] 



Sept. 1886. 



