276 Entomological Society, 



of Otiorhynchus picipes, each antenna having only four joints in the 

 funiculus instead of the ordinary number. 



The following memoirs were read : — 



** Description of a genus and species of Syrphideous Diptera new 

 to Britain." By P. Desvignes, Esq. 



DiDEA, Macquart (Enica? Meigen). Antennee porrectcB, articulo 

 2tio elliptico, compresso, intus attenuato, setd tertid parte longitu- 

 dinis insertd, nudd ; oculi nudi ; abdomen oblongum, valde depres- 

 sum, limbatum ; cellula marginalis alarum aperta, submarginalis 

 pedi/ormis. 



Didea fasciata, Macq. Face and forehead yellow ,' antennee inserted 

 on a prominence, black ; thorax metallic green with yellow hairs 

 on the sides ; scutellum yellowish ; abdomen with two large lateral 

 yellow spots on 2nd segment, 3rd and 4th segments with a broad 

 yellow band posteriorly crescent-shaped ; four anterior thighs black 

 at base ; tibice yellow ; hind legs and all the tarsi black, the former 

 yellow at the knees; wings hyaline, with a faint tinge of yellow ; 

 submarginal and mediastinal cell brown. (Syn. Enica Foersteri ?) 



This genus approximates to Eristalis in having the submarginal 

 cell pediform, and to Syrphus, Macq., in having the marginal cell 

 open ; but differs from both in its antennae. 



It appears very rare abroad. Taken in October 1841 at Birch 

 Wood. In Mus. Desvignes. 



" Descriptions of some new species of the Lamellicom genus Pa- 

 rastasia, Westw." By Professor Erichson of Berlin. 



Parastasia scutellaris, Erichs. Supra lutea, capite scutelloque nigris, 



infra nigra, abdominis lateribus luteis. Long. lin. 7. — Hab. in 



insula Riouw, prop^ Sumatram. Mus. Reg. Berol. 

 Parastasia dimidiata, Erichs. Nigra, nitida, elytris postic^ luteis, 



pygidio rufo. Long. lin. 41. — Hab. in insuM Riouw. Mus. 



Reg. Berol. 

 Parastasia nitidula, Erichs. Nigra, nitida, elytris fusco-ceneis politis. 



Long. lin. 4. — Hab. in insula Bintam, prop^ Sumatram. Mus. 



Reg. Berol. Omnes sunt genuinse Parastasia. 



** Descriptions of some new exotic species of Lucanidcc." By J. 

 O. Westwood, F.L.S. 



^gus platycephalus, Guerin MSS. Niger, tenuissime punctatus, 

 capite et pronoto latissimis ; mandibulis capite longioribus, apice 

 falcatis, intus ante medium dente valido, suberecto, obtuso, instruc- 

 tis ; pedibus et elytris piceis, his 6-striatis ; tibiis 4 posticis in 

 medio l-dentatis. — Long. corp. mand. excl. lin. 16. Mus. Guerin. 



^gus sequalis, Hope MSS. Piceo-niger, capitis et pronoti lateribus 

 magis piceis, Icevis, oblongus, elytris 6 punctato-striatis ; capite 

 lato; mandibulis capite parum longioribus falcatis, singuld ad 

 basin dente supero armatd. Long. corp. mand. excl. lin. 11^. 



^gus Malabaricus, Hope MSS. Niger, elytris opacis punctatis- 

 simis, singula 1 -striate ; striis alternatis, profundioribus ; capite 

 angusto, lateribus angulatis, pronoto fere quadrato ; mandibulis 



