( xxxii ) 



Calodera rubens, Ev. ; and Occytelus fulvipes, Ev. He also ex- 

 hibited a Bhizophagus from Sherwood Forest, which appeared 

 to belong to a new species ; and several specimens of Holo- 

 pedina polypori, Forst., also from Sherwood Forest, where he 

 had found it in company with, and probably parasitic on, Cis 

 vestitus. Concerning the latter insect he read the following 

 notes from the Eev. T. A. Marshall : — 



" Nunton Vicarage, Salisbury, Jan. 28, 1887. Dear Sir, — 

 Your insects are undoubtedly Holopedina polypori, Forst., 

 fully described in Verb. Pr. Rheinl. 1850, p. 502. The 

 description is very complete, and the insects were found by 

 Forster in a similar situation to yours ; and he also con- 

 jectured them to be parasites of Cis. I thank you very much 

 for giving me specimens, as I had not seen the species before. 



" I used to suppose that H. polypori, Forst., was a synonym 

 of Cepludononwa formidformis, West., having been informed 

 upon some good authority (I forget whose) that this was so. 

 It is quite clear to me now that the two species are distinct. 



" Holopedina is very near Bethylus. I compared Panzer's 

 figure of Tiphia {Bethylus) cenoptera, and at once concluded 

 that your insect could not be that, from the antennae and 

 wings. The wings of B. cenopterus are infuscated, and have 

 basal nervures, &c. — T. A. Marshall." 



Mr. Elisha exhibited two larvae of Zelleria hepariella, Stn. 



Mr. Stainton remarked that as the greater part of the 



larvae of Zelleria were attached to the Oleacea, it seemed 



strange that certain species had recently been found on 



Saxifrage. 



Paper read. 



Mr. Slater read the following paper, * " On the presence 

 of Tannin in certain Insects, and its influence on their 

 colours " : — Whilst meditating on the colours of insects, 

 I was struck with the fact that if wo set aside the so- 

 called metallic or iridescent colours, which are not due to 

 any pigment, a vast majority of the remainder consist of 

 what we may call "leather-colours," ranging from clay- 

 colours, dull and impure yellows, to yellowish browns of very 

 different degrees of intensity. On referring to descriptions 



* Certain researches which I have just hoard of compel me to lay my 

 i tii >n before the Society sooner than I expected. 



