Mr. J. E. Gray on some new Mammalia. 255 



2nd. That the alliance of the Papaveraceae and Brassicacece 

 (Cruciferce) is, in respect of the structure of the capsule, more 

 close than heretofore supposed ; in illustration of which we 

 find that the two-celled, many-seeded silique of Glaucium has 

 its perfect analogue in that of Brassica, whilst the compara- 

 tively imperfect state of the one-celled, single-seeded silicule 

 of Isatis in the second order, is represented in the first by the 

 similarly-constructed capsule of Bocconia. 



3rd. That the enunciation of the law which expresses the 

 necessary alternation of stigmas with dissepiments (Lindley's 

 ( Key to Structural Botany/ § 379.), and with parietal placen- 

 tas, must be modified to embrace the above-described facts, 

 and may be conveniently and correctly expressed thus : That 

 in syncarpous capsules, parietal placentas, and therefore dis- 

 sepiments, always alternate with simple stigmas formed by 

 single carpels, but are opposite to those which are formed by 

 the union of the adjacent margins of contiguous carpels. 



Bath, 5 Axford's Buildings. 



[Note. — In Kunth's ' Flora Berolinensis/ (published in 1838) 

 we find (v. i. p. 29) the stigma of Papaveraceae described as 

 follows : — " Stigmata tot quot placentae, cum his alternantia, 

 magis minusve connata, * * * sinubus inter stigmata saepe am- 

 pliatis lobosque referentibus cum stigmatibus alternantes (a 

 plurimis pro his sumptos) placentisque oppositos." In the 

 generic description of Papaver (p. 30) he says, " Stigma 

 magnum, sessile, 5-20-lobum : lobi sursum inflexi, * * * mar- 

 ginibus stigmaticis per paria contiguis radios formantes tot 

 quot lobi, placentis oppositos ; sinubus saepe ampliatis inque 

 lobos productis spurios, cum legitimis alternantes/' No other 

 description of this curious structure has come under our no- 

 tice*.— Ed. Ann. Nat. Hist.] 



XXXVII.— Descriptions of some new Genera and fifty unre- 

 corded Species of Mammalia. By J. E. Gray, Esq., F.R.S. 



My DEAR SlR, British Museum, Oct. 10, 1842. 



I have sent you for insertion in the ' Annals' the characters 

 of the following species of Mammalia, which I believe have 



* It had escaped our attention till Mr. Howell's paper was already in type 

 and our day of publication close at hand, that those of his observations which 

 relate to the opposition of stigmata to placentae in Papaveracete, and to the 

 composition and cohesion of stigmata, had already been published by Mr. 

 Brown in his account of the Cyrtandracece in Horsfield's ' Plantae Javanicae :' 

 Mr. Howell appears not to have been aware of this fact. 



In a subsequent number we shall be enabled to refer more fully to Mr. 

 Brown's dissertation. 



