7336 Entomolocjical Society. 



D. sericea the third joint of the antennae is elongate-ohconic, and decidedly longer 

 than the second ; whilst iu L. aquatica the third joint of the antennae is shovt-obconic, • 

 and very little exceeds tlie second in length. In both sexes the antennae are longer in 

 D. sericea than in L. aquatica; the legs are also rather longer. In L. aquatica ihe 

 tooth to the hind femora is stouter, and ihe joints of the tarsi are shorter and broader. 

 Such are the differences which present themselves upon comparing the insect exhibited 

 to the Society, as being similar to the L. aquatica of the Linnean collection, with the 

 Donacia sericea. Mr. Waterhouse could not say whether these differences are all of 

 them constant. The specimen exhibited was taken at Ranuoch, in Perthshire. 



Mr. Waterhouse observed that since the last Meeting he had examined certain 

 Cassidae in the Linnean collection which might be referred to British species. They 

 were : — 



1. Cassida viridis. This is not, as has by many been supposed, the C. equeslris, 

 but is the species commonly found by us on thistles, having acute posterior angles to 

 the thorax, and punctate striae to the elytra. = C. riibiginosa of Bohemann. 



2. C. nebulosa =^ C. nebulosa of Boliem. 



3. C. Murrs3a = C. murraea of Bohem. The rufous-brown variety. 



4. C. maculata = C. murraia of Bohem. The green variety. 



5. C. nobilis = C. obsoleta of Bohem. Has the margins of the elytra reflexed, 

 the alternate interstices of the striae of the elytra slightly raised, and the region of the 

 scutellum depressed. 



6. Cassida Vibex =; C. nobilis of Bohem. The specimen is apparently discoloured ; 

 the whole dorsal surface of the elytra is darkish brown, if we except the second inter- 

 stice, which is pale, and which no doubt, in the living insect, was occupied by the 

 bright green stripe ; the dark colour occupying the first interstice and the 3rd and 4th 

 interstices of the striae, but stopping considerably short of the apex ; the remaining 

 upper parts are paler : the under parts are black, the sides of the abdomen rather nar- 

 rowly edged, and the apex very narrowly edged with pale. The thighs are black, 

 excepting at the apex, and the tibiae and tarsi are piceo-testaceous (the anterior tibiae 

 piceous), which is unusual. The expanded margins of the elytra are deflexed. 

 Mr. Waterhouse considered that this must have been the C. nobilis of the ' Fauna 

 Suecica,' and does not really represent that described by Linneus under the same 

 name. 



Mr. Rye exhibited a specimen of Choleva spadicea found in a fungus at Coombe 

 Wood. 



Dr. Knaggs exhibited some eggs of a Lepidopterous insect from which small Hy- 

 menopterous parasites, apparently a species of Mymar, had emerged ; and some eggs 

 of Sesia bembeciformis found deposited ou a sallow-leaf. 



Mr. Stevens exhibited some small Staphylinidas recently found in moss, including 

 Evoesihetus scaber, Acidota cruentatus, Stenus fuscicornis ? and Syntomium aeneum. 



Mr. Waterhouse read a paper intituled " Notes on the Species of Triplax of 

 Stephens's ' Illustrations ' and Collection.'' — E. S. 



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