26 EEV. E. BOO a WA.TSON ON THE 



Measurements of the type specimen of Carpophaga Einschii: — 

 Total length of skin 12 inches, wing 8*2, tail 4'8, tarsus 1, mid 

 toe (s. II.) 1'2, hind toe (s. u.) 0'65 ; bill from forehead 1'15, from 

 the nostril 0'6, from the gape 1"2. 



HemarJcs. — Several of the outer tail-feathers and the centre 

 two are scarcely half-grown ; but from what can be seen of them, 

 they appear to be of the same colours as exhibited ia the re- 

 mainder ; the under wing-coverts are ashy, with bluish-ashy 

 margins, of the same tiat as that of the back of the neck. The 

 total length of the bird, when alive, was about 14'5 inches. 



MoLLUscA OP H.M.S. ' Challenger ' Expedition. — Part XVI. 

 By the Eev. Eobekt Boog Watson, B.A., F.E.S.E., F.L.S. 



[Published by permission of the Lords Commissioners of the Treasm-y.] 



[Read November 16, 1882.] 



Eam. FissuEELLiDiE, jRisso. 



Zeidora, a. Ad. \ Puncturella, R, T. Lowe. 



Zeidora is classed here under the Fissurellidse in accordance 

 with the view of its author, from which, in the absence of the 

 animal, it would be rash to depart. It seems, however, rather 

 an internal than an external shell ; and its true place will pro- 

 bably be found among the Opisthobranchia, perhaps in the 

 ]ieighbpurhood of Pleurohranclms. CrepiemarginuJa, a genus 

 proposed by Prof. Seguenza for a Pliocene fossil of great rarity, 

 is A. Adams's Zeidora. 



In reference to the Puncturellas, the species hitherto known 

 are very few. Adams in the ' Grenera ' (vol. I. p. 451) enume- 

 rates only seven ; and of these, P. princejjs, Mighels and Adams, 

 and P. galeata, dould, are certainly the same as P. Noacliiiia, L. ; 

 while others probably need revision. Dr. Grwyn Jeffreys, in his 

 ' Valorous ' Eeport (Ann. & Mag. N. H. Mar. 1877, p. 2,32) de- 

 scribes one new species, and refers to three others from the * Porcu- 

 pine' dredgings, of whicii two are Sicilian Pliocene fossils described 

 by Seguenza. Mr. W. H. Dall, in his "Eeport on the Blake Dredg- 

 ings " (Bull. Mus. Comp. Zool. Harvard Coll., Camb., Mass., 

 Aug. 25, 1881, pp. 75, 7G), has described two new and very interest- 

 ing species from the Gulf of Mexico, One of the species from the 



