258 JOURNAL OF CONCHOLOGY, VOL. ID, NO. 9, JANUARY, I903. 



T. depauperata Sowb. Habitat unknown, but probably from 

 Western North America, as it appears to be closely allied to T. cali- 

 fornica. "Probably described from a worn specimen of T. californica" 

 (Roberts). Melvill considers this a good species. I have seen no 

 specimen which corresponds to Mr. Sowerby's figure or description. 



T. suffusa Gray. — A West Indian species erroneously credited to 

 the Galapagos Islands,^ doubtless on the strength of specimens of T. 

 pacifica^ which is somevvhat similar. 



T. subrostrata Gray. This is a West India species, similar to 

 and smaller than T. pulla, but not found on the Pacific coasts. 



It is hoped that these few notes, the result of my study, will be of 

 value to those interested in this genus. That I may have erred in 

 some of my conclusions as here stated is not improbable, as compari- 

 son with type specimens has not been possible in all cases. I shall be 

 glad, however, to know of any errors and to have the corrections given 

 equal publicity. 



Oakland, California, April, igos. 



Report on the Leasowe Ramble, July I2th, 1902. — On arriving at Leasowe 

 station the party proceeded in the direction of the shore, towards Moreton, picking 

 up from the ditches and hedgerows specimens of Helix ttemoralis, H. hispida, and 

 its variety concinna, Hyalinia alliaria, Hy. piira, Hy. nitidula, Hy. crystallina, 

 and Zua lubrica. Tlie species of aquatic moUusca were limited to Linincea peregra 

 var. mariti7>ia, L. paliistris, L. truncatitla, Bythiniateiitaciilata, Physa hypnortwi, 

 and Planorbis spirorbis, all abundant. A pretty form oi Succinea putris was com- 

 mon on iris leaves and rushes. Although a considerable distance from the sea, the 

 ditches must contain brackish water, for a prawn (Palcemonetes varians) about i '5 in. 

 in length occurred plentifully, and it was a somewhat novel experience to bring up an 

 assortment of familiar freshwater molluscs, intermingled with these marine crus- 

 taceans. On reaching the breakwater, we vainly searched for Helix acuta in its 

 well-known locality. Those of us who were acquainted with the marvellous way 

 in which this mollusc can, in dry weather, obliterate itself, were not greatly surprised 

 at its absence. Helix caperata and Pupa marginata were not uncommon under- 

 neath the big stones scattered along the hndward base of the breakwater. At Meols 

 there is a large colony of Helix aspersa, which is evidently being slowly extirpated 

 by thrushes, as many shells lay scattered about the sand-hills, all exhibiting the 

 characteristic fracture inflicted by this bird. The state of the tide prevented our 

 getting to the colon)' of Pholas Candida, which burrows in the peat masses of the 

 ancient submerged forest visible at low-water mark. Only the common littoral 

 marine shells were found on the shore, but some small, curiously stunted and de- 

 formed Mytiliis edtilis, with thick and eroded shells, taken from crevices of the 

 breakwater, were a notable contrast to the beautifully-marked and fragile shells of 

 the same species froiri the River Mersey, shewn at a recent meeting of the Society 

 {antea p. 215). — R. Standen {Read before the Society, Sept. loth, 1902). 



I Sowerby, " Mon. Cyp.," Index to plate j4 ; Reeve, " Cypraea," no. 142. 



