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VI. Some Account of a new Species of Eurornus Geoffroy. 
By the Rev. William Kirby, M.A. F.R S. and L.S. 
Read December 17, 1822. 
Havixc had an opportunity of observing some part of the pro- 
ceedings of a new species of that singular tribe of parasitic 
Hymenoptera, of which Geoffroy, on account of the branched 
antennæ of the male, has constituted a genus under the name of 
Eulophus, 1 flatter myself that the observations I have made will 
not be unacceptable to the Linnean Society. 
Geoffroy’s original species (E. pectinicornis) was found by him 
upon the leaves of the lime-tree*; but De Geer obtained it from 
the caterpillar, which it infests, that. mely of a Bombyx related 
to B. Anastomosist. The same ilh .entomologist, from a 
little subcutaneous larva, which mines its tortuous galleries in 
the leaf of the oak, procured a second species (E. ramicornis) 1. 
That which I am about to describe consoled me for my disap- 
pointment in not bringing to perfection a caterpillar which I 
found upon the hazel, and which nearly, but not altogether; 
resembled that of Bombyx camelina. This caterpillar, which I 
took on the twelfth of last July, had sixteen legs, the membra- 
naceous ones or prolegs being armed ^ with a semi-coronet of 
hooks. It was green, with two lateral ] ale-yellow longitudinal 
stripes, the spiracles or breathing-i vores being in ‘the lower one. 
On its last segment but two, which was | bbous, it was armed with 
— Hist. Ins. Par.ii.313. t Mem. &c. ii. 319. tiv. f.22—24. Ibid. 1. 588. 
" a pair 
