no Dr. J. C. ^Jelvill and Mr. I{. Sfanden on 



anterior outline is lni;li, and an excavation exists below it. 

 The posterior outline lias a deep dimple^ the interior margin 

 of the base is convex, and the prow rounded. The posterior 

 hooks have the same structure, but are smaller, and tlie 

 hispid crowns are proportionally large. After the cessation 

 of the bristles the uncinigerous processes become more 

 distinct, and posteriorly they form in front of the tail a 

 conspicuous series of serrations. 



The tube is of moderate length, and composed of secretion 

 strengthened by glittering sponge-spicules and minute 

 Foraminitera, so that it forms a somewhat thick rough 

 or hirsute tunnel. They seem to have formed groups. 

 The sponge-spicules constitute a large part of the wall of 

 the tube, and form a very ethcicnt protection. The inner 

 secretion is somewhat tough. 



EXPLANATION OF THE PLATES *. 



Plate V. 



A female lesser rorqual on its right side. It had been dead several weelo. 



Plate VI. 



Fig. 1. Anterior region o{ Prionospio, from the Gulf of St. Lawrence, 

 Canada (dredged by Dr. Whiteaves). The long tentacle.^, no 

 trace of which occurred in the collection, liave been added from 

 Sarp. Enlarged under a low power. 



Fir/. 2. First loot of the foregoing. Zeiss, oc. 4, obj. A. 



Ftr/. '.]. Second foot of the sauK^ Ditto. 



F/f/. 4. Anterior foot with dorsal and ventral lamellte and, to the right, 

 a brancliia. Similarly innguified. 



Fif/. 5. Dorsal bristle, with its marked curvature. X oc. 4, obj. I). 



Fii/. 0. Portion nf the shaft of another example, presenting the transverse 

 granular bars. X oc. 4, obj. D. 



Fiff. 7. Stiff curved bristle guarding the ventral hooks inferiorly in the 

 middle of the body. X oc. 4, obj. D. 



F/ff. 8. Ventral hook. Similarly magnilied. 



XII. — Notes on jlJoIfiisca collected in the Nort/i-vest Fulk- 

 laads hy Mr. Rupert Vallentin, F.fj.S.,ivit/i Descriptions 

 of Six new Species. By Jami:s Cosmo Mklvill, M.A., 

 D.Sc, F.L.J^., and KoiJiiRT Stanuen, Assistant Keeper, 

 Manchester iMuseum. 



[Plate VII.] 



Considerably more tiian twelve years have elapsed since 

 we rejiorted f on a collection of Marine Mollusea found hy 

 Mr. Itupert Vallcutiti, 1*\L.H., in the East Falkhuids, mainly 

 in the iicighbourliood of Port William and Stanley Harbour, 

 and we had also, prtwioiisly to this J, in 1808, published an 



♦ I am indebted to tlie Carnegie Trust for these Plates. 

 t .Touin. of Condi, x. pp. ^3-47 (1901), 

 X LI. ix. pp. 07- 10.; (IB'JH). 



