Miscellaneous. 301 



name of P. coronaia on the same page, and figured in the ' fJenera 

 of Recent Mollusca ' by Messrs. H. and A. Adams on pi. xiv. 

 fig. 1. 



Mr. E. W. H. Holdsworth has recently presented to the Briti.-»h 

 Museum a series of shells which he had collected in Ceylon ; and 

 among them are three specimens of Pinaxin, two of which have tlie 

 operculum preserved. It is homy, stained with pinkish colour, and 

 of the usual form that obtains among the Purpvrincef and thus 

 shows that this genus has been rightly located by the above authors. 

 The small transverse plaits on the columella (about six in number) 

 appear to exist only in the adult shell ; and the same remark applies 

 to the fine lirations within the aperture. 



In a variety from the Sandwich Islands the coronation which 

 edges the spire in the typical form is totally wanting, the general 

 form is more bulbous, and the spiral lirations are but slightly raised. 

 The deciduous epidermis is villose and of a pale olive colour. 



In 1839, in the 'Zoology of Beechey's Voyage,' p. 114, Dr. Gray 

 described a shell from the Pacific Ocean under the name of Pi/nda 

 versicolor. The description is excellent ; but by an oversight or 

 printer's error, the colour is stated to be "bright crimson,'" which 

 no doubt should have been bright orange. The sjx'ciraen from which 

 the description was taken, although a large one, is not adult : and 

 consequently the character of the plaits on the columella is not 

 mentioned. Taking these two circumstances into consideration, I 

 think it will be advisable to adopt the more recent name coronata. 



Perhaps this may be a fitting opportunity to acquaint concholo- 

 gists that one of the last, and not least, of the innumerable acts of 

 generosity of the late deeply lamented Dr. Gray was the presentation 

 by him to the British Museum of his private collection of shells. 

 How valuable an acquisition to the National Collection this is will 

 at once be acknowledged, as it comprises a large number of types 

 of his species which were described many years ago in the Zoology 

 of ' Beechey's Voyage,' Griffiths cdirion of Cuvier's ' Animal King- 

 dom,' the 'Annals and Magazine of Natural History,' the 'Zoological 

 Journal,' the ' Zoological Miscellany,' &c. A number of these species 

 are but briefly characterized and unfigured ; so that in the present 

 state of conchological science it is almost impossible to recognize 

 them, at least with any degree of certainy, except by comparison 

 with the actual types. Thus the value of the collection becomes 

 greatly enhanced. 



On the general Phenomena of the Embryogeny of the Nemertians. 

 By M. J. Babp.ois. 



Amongst the numerous obstacles which one encounters at each 

 step in researches in embryogeny, there is none more serious than 

 that presented by the multiplicity of the larval forms in the same 

 group of animals. These divergences, often very great in the first 

 stages of development, prevent us from taking these as a starting- 

 point in the appreciation of the subsequent phenomena : conse- 



Ann. d" May. X. Hist. Ser. 4. Vol. xv. 21 



