Linnaan Society. 381 



In the sexual variations detailed above, it is the male insect which 

 varies most from the type, but the females of some species of Me- 

 chanitis present a remarkable structure in the anterior portion of the 

 wing, the costal nervure being united to the subcostal for the greater 

 part of its course. 



An additional interest attaches to these peculiarities of the wings, 

 from their being combined with the great peculiarities above referred 

 to in the structure of the anterior feet. 



The writer then proceeded to point out some analogies in the struc- 

 ture of the wings of the Ithomia and some Hymenoptera, especially 

 as regards the inner margin of the anterior wings and the anterior 

 margin of the posterior wings, and also with reference to a fringe of 

 hairs on the latter, analogous to the hooks occupying the same po- 

 sition in the Bees and other Hymenoptera, 



December 7. — E. Forster, Esq., V.P., in the Chair. 



Read a '* Description of a new genus oiLentibularice, with remarks 

 on some Indian species of Utricularia." By M. Pakenham Edge- 

 worth, Esq., F.L.S. &c. 



Gen. Nov. Diurospermum. 



Calyx bilabiatus, labio superiore 2- (varius 3-) dentato. Corolla bilabi- 

 ata, tubo brevi, labio superiore brevissimo truncato, inferiore 3-dentato. 

 Stamina inclusa. Stylus brevis, stigniate dilatato. Capsula ovata, 

 obgosperma; placenta central! libera conica in apicem products. Se- 

 mina pauca (prope 6), ovata, testa laxa striato-rugosa, utrinque pilis 

 paucis longis caudata. Nucula compressa, submarginata. Embryo ? 

 — Herha pusilla, acauUs, foliis radicalibus, radicibus utriculiferis. 



Diurospermum album. 



/fab. super rupes madidos, in Vishnugangetis valle, Himala ; alt. 8000 

 ped. 



This little plant, the author thinks, forms a link connecting Len- 

 tibularice with Cyrtandracece, to which order its tailed seeds show an 

 approximation. Unfortunately he has not been able to separate the 

 embryo so as to be satisfied with its nature and direction. In habit 

 it resembles slightly some of the section Oligocista of Utricularia. 



Utricularia (subgenus Oligocista) foveolata, radicibus fibrosis brevi- 

 bus, scapo simplici apbyllo 2 — G floro racemoso sinistrorsum volubili, 

 bracteis solitariis ovatis acutis basi-fixis pedicello vel longioribus vcl 

 multo brevioribus, lobis calycinis pedicello longioribus ovatis acutis 

 corollam subsequantibus in fructu cum pedicello defracto valdfe auctis, 

 corollae labio inferiore vix concavo margine 3-lobo superiore bifido : cal- 

 care conico labii inferioris longitudine, capsula cernua calyce aucto 

 obtecta, seminibus majusculis compresso-trapezoideis rugoso-foveolatis 

 foveolis nitidis punctatis. 



fab. in Bengalia, uliginosis, Januario. 



In U. uliginosa, DC, no. 66. vol. viii. p. 15? Flos purpureus, scapus ru- 



:eiis. 



|Utricularia polygaloides, radicibus fibrosis, scapo apbyllo erecto plus 

 minus ramoso 2- v. multi-floro, squainis adpressis ovatis acutis, bracteis 

 ternis exterioribus ovatis acutis interioribns subulatis pedicello com- 

 presso iequalibus vel longioribus, lobis calycinis ovatis acuminatis sub- 



Is 



