454 



Sir H. H. Hoioorth — The Western Baltic. 



Fig. 13.— 



Plectambonites papulosa, sp. nov. Exterior of pedicle valve. Slade Beds: 



Upper Slade. x 3. 

 -Ditto. Cast of interior of same valve and specimen, x 3. 

 Ditto. Pedicle valve, showing portion as cast. Same horizon and 



locality, x 3. 

 Ditto. The two valves in natural juxtaposition. Same horizon and 



locality, x 3. 

 ■Atrypa imbricata, Sow. Pedicle valve. Slade Beds : Cuckoo Grove 



Lane, Haverfordwest, x 1|. 

 ■Zygospira Hichsi, sp. nov. Cast of interior of brachial valve. Slade 



Beds : Cuckoo Grove Lane, Haverfordwest, x 2. 

 ■Ditto. Cast of interior of brachial valve, showing hinge, etc. Same 



horizon and locality, x 2. 

 •Ditto. Cast of interior of umbonal portion of pedicle valve, showing 



teeth, etc. Same horizon and locality, x 2. 

 ■Hyattella pentagonalis, Eeed(?). Cast of interior of pedicle valve. Slade 



Beds : Bank Saeson, "Whitland. x 1 J. 



lY. — The Kecent Geological History of the Baltic. Part III : 



The Western Part of the Sea, the Sound, and the Belts. 



By Sir H. H. Howorth, F.R.S., F.G.S. 



{Concluded from the September Number, p. 413.) 



PEOCEEDING westward, the fauna again increases in richness. 

 The molluscan fauna of the Gulf of Kiel has been elaborately 

 described by Meyer and Mobius in their well-known work entitled 

 " Fauna der Kieler Bucht." They thus enumerate the shells found 

 there : — 



Opisthobranchia. 



Polycera ocellata, 

 F. quadriliiieata. 

 Aneula crlstata. 

 Doris 2nlosa. 

 D. proxima. 

 D. muricata. 

 Fhiline aperta. 

 Acera bullata. 

 Cylichna truncata. 

 Amphisphyra hyalina^ 

 Prosobranchia. 



*Hydrobia uIv(b. 

 t Velutina haliotoidea. 

 *Cerithium rettculatum. 

 fTriforis perversa. 



Buccimim undatmn. 

 *Iiassa reticulata. 

 Fusus antiquus. 

 jFleurotoma turricula. 

 Odostomia rissoides. 



Fontolimax capitatus. 



Elysia viridis. 



Embletonia Maria. 



E. pallida. 



jEoUs alba. 



jE. Drummoiidii. 



.M. papulosa. 



jE. exigua. 



jE. rufobranchialis. 



Dendronotus arboreseens. 



Chiton marginatus. 



Tectura testudinalis, 

 *Litorina litorea. 



L. obtusata. 

 *L. rtidis. 



Lacuna dirarieata. 



L. pallidula. 

 *Rissoa inconspicua. 

 *It, octnna. 



£. striata. 



*Mytilus edulis. 



Modiolarca discors.^ 



M. nigra. 



M. marmorafa. 

 *3fontacHta bidentata. 

 *Cardinm ediile. 

 *C.fasciatttm. 



Lamellibranchia. 



Cyprina islandica. 

 *Astarte borealis. 

 fA, sulcata. 



A. compressa. 

 *Tellina balthica. 

 fTellina tenuis. 

 * Scrobictilaria piperafa. 



^ In the pre-vious part of this paper, at p. 412, lines 3 and 23 from top, for 

 Modiolaria read Modiolarca. — H. H. H. 



