172 THE ENTOMOLOGIST. 



arrangement. The traclieie are white and silvery over the 

 alimentary canal, but the last as well as those of its corresponding 

 spiracles show black through the transparent body of the larva, 

 under a lens. The surface of the body of the larva is very finely 

 rugulose or covered with very fine wrinkles, which gives it a 

 satiny appearance. I ought to mention the very numerous 

 whitish granulations seen through the skin (fig. 2) ; similar 

 granulations have been well described by M. Fabre in an 

 interesting work on the Sphegidse (Ann. Sci. Nat., Zool., 4th ser., 

 vi., 167). He has observed the whitish granular appefU'ance to 

 be due to uric glands, really organs of secretion, in the larva of 

 Sphex flavipennis and many others." 



Laboulbene then refers to Barthelemy's mention of these 

 granulate uric glands in the larva of Scenometojna atropivora, and 

 to the references and figures of Reaumur, Eoesel, Bouche, and 

 Goureau, relating to the presence of the "pseudopodes dorsaux" 

 in certain Ichneumonid and Chalcid larvae. He also says that it 

 is possible that this larva also has lateral tubercles, which he had 

 overlooked in being so much occupied with the prominent dorsal 

 ones, saying that " if they exist, they are not very marked." 



A detailed description of the female Ichneumon is given under 

 the name of Pimpla Fairmairii. It is said to be very closely 

 allied to Pimpla rufata, Gmel., but it is well figured, without an 

 areolet, and is undoubtedly a Polysphincta ; whether it be a 

 distinct new species is not now under consideration. 



In the ' Proceedings ' of the Entomological Society of London 

 for January 4th, 1869, we are told that Prof. Westwood exhibited 

 " an Ichneumon and an Epeira, the larva of the former being an 

 external parasite on the body of the spider " (Trans. Ent. Soc. 

 Lond., 1868, p. 1). But this is just so much information that 

 only makes us * long for more.' 



In the spring of 1869 Snellen van Vollenhoven received from 

 Herr Ritsema an immature specimen of Miranda {Epeira) cucur- 

 hitina, on which a parasitic larva was feeding. The spider spun a 

 web on the following day, and the Ichneumonid larva continued to 

 grow rapidly during the next three or four days, when it spun a 

 cocoon, the skin of the dead spider dropping down. Twelve days 

 after the completion of the cocoon a male Polysphincta carbonator, 

 Grav., emerged (Tijd. v. Ent., 2nd ser., vol. v., pp. 17 — 19 ; 1870). 



On July 25th, 1876, Herr C. G. A. Brischke's wife was 

 fortunate enough to find, about three miles from Danzig, a 



