Mr. W. H. Benson on new Species of Helix. 491 



papillose viscous covering that enwraps the putamen is evidently 

 analogous to the short tomentura imbedded in a pulpy raeso- 

 carp, as seen in Jateorhiza, Odontocarya, and Hamatocarpus, and 

 the fleshy envelope in Anomospermum. The description given of 

 the form of its embryo is precisely that found only in the Hetero- 

 cliniea. From the evidence collected from all sources, which 

 appears to me undeniable, the following generic character has 

 been formed. 



BuRASAiA, Thouars. — Flores dioici. Masc, Sepala 6, ovalia, 

 concava, 2-serialia, 3 exteriora minora. Petala 6, oblongo- 

 ovata, breviter unguiculata, carnosa, 2-serialia, exteriora paulo 

 majora, apice eroso-denticulata. Stamina 6, petalis opposita : 

 filamenta carnosa, subbrevia, gradatim incrassata, apice geni- 

 culato-clavata : antherce oblongse, introrsae, 2-lobae, lobis ad- 

 natis, imo paulo divaricatis et subimmersis, horizontalibus, 

 rima laterali utrinque dehiscentibus. Ovaria rudimentaria 

 nulla. — Foem. (char, ex cl. Decne.) sepala et petala ut in masc. 

 Stamina abortiva 6. Ovaria 3, gibbosa, 1-locularia, ovulo 

 unico angulo ventrali appenso. Stigma sessile, truncatum. 

 Drupce 3, carnosae, supra gynsecium auctum insitae, ovatse : 

 putamen papillis tectum, mesocarpio viscoso indutum, ovatum, 

 plano-convexum, 1-loculare, condyle concavo in loculo pro- 

 tenso : embryo intra albumen copiosum fere rectus, cotyledoni 

 bus planis, foliaceis, in locellis distinctis divaricatis, radicula 

 supera, stigma spectante. 



Frutices Madagascarienses, glabri, cortice rimoso ; folia longe pe- 

 tiolata, palmatim S-foliolata, foliolis ovatis, lanceolatisve, inte- 

 gerrimis, coriaceis ; racemi joaMci, aa:illares,fasciculati, floribus 

 parvis, breviter pedicellatis. 



1. Burasaia Madagascariensis, P. Th. ; — Madagascar. 



2. gracilis, Dene. ; — Madagascar. 



3. congesta, Dene. ; — Madagascar. 



Descriptions of these species are given in the ' Contributions 

 to Botany,' vol. iii. 



[To be continued.] 



XL VII. — Descriptions of new Species of Helix and Pupa /rom the 

 Colony of the Cape of Good Hope, By W. H. Benson, Esq. 

 The following species were chiefly received from Mr. Edgar 

 Layard, who has been assisted in collecting shells by several 

 correspondents in distant parts of the colony. 



1. Helix Arnotti, B., n. sp. 

 H. testa obtecte perforata, subconoideo-depressa, irregulariter oblique 



32* 



