Zoological Society. 333 



formibus suhramosis nigricantibus sursmn curvatis coronatd ; 

 anfractuum parte alterd spinis brevioribus nigris in seriebus 

 dispositis ; spird plano-convexd. 

 Hob. Cape Upstart, North Australia, in crevices of rocks at low 

 water; Jukes. (Mus. Cuming.) 



Dklphinula euracantha, Adams. D. testd subdiscoided, al- 

 bidd fusco rubroque variegatd, anfractibus supra IcBvigatis, su- 

 perne angulatis, angulo spinis squamceformibus grandibus latia 

 decurvatis ornate ; anfractuum parte inferiori serie unicd spi- 

 narum et squamarum in seriebus parallelis dispositis ornatd ; 

 umbilico ample, squamis muricatis armato, peromphale nodose. 

 Hab. Isle of Mindora, Philippine Islands; H. C. (Mus. Cum.) 

 Like D. aculeata. Reeve ; but the spinose processes are broad and 

 deflexed, and there is a single row of large spines on the under part. 



Delphinula calcar, Adams. D. testd. orbiculari, discoided ; 

 spird depressd, albd, anfractibus angulatis acutis, peripherid 

 serie unicd spinarum radiatim stellatd, spinis triangularibus 

 compressis prominentibus ; anfractuum parte inferiore pland ; 

 umbilico patulo, crenulato. 

 Hab. Catanuan, province of Tayabas, island of Luzon, sandy mud, 

 10 fathoms ; H. C. (Mus. Cuming.) 



A small species, partaking somewhat of the characters of Z). stella- 

 ris, Adams and Reeve, but much more depressed, and the lower part 

 of the whorls simple. 



March 26.— W. Yarrell, Esq., V.P., in the Chair. 

 The following papers were read : — 



1. On the species of Mollusca collected during the 

 Surveying Voyages of the Herald and Pandora, by 

 Capt. Kellett, R.N., C.B., and Lieut. Wood, R.N. By 

 Professor Edward Forbes, F.R.S. 



1. On the Land-Shells collected during the Expedition. 



Officers employed on a hydrographical survey have seldom time or 

 opportunity for making an extensive collection of land-shells. In the 

 assemblage of mollusks collected by Capt. Kellett and Lieut. Wood, 

 there are twenty-eight species, of which eight are undescribed forms. 

 These have been collected at various points between the coast of the 

 Equador to the south and Vancouver Island to the north, the Gele- 

 pagos Islands, Pitcairn's Island, and the Sandwich Isles. Unfortu- 

 nately, in consequence of the mixing of milabeled specimens, the pre- 

 cise locality of several of the species cannot now be determined. 



Of the genus Helix there are nine species. Of these, H. Towns- 

 endiana, Nuttalliana and Columbiana are certainly from the neigh- 

 bourhood of the Columbia river. Helix Kellettii and Pandorce, both 

 new, are probably from the same country, though the box in which 

 they were contained was marked " Santa Barbara." Helix areelata 

 bears no indication of its locality. Helix labyrinthus, variety sipun- 

 culata, is a very curious modification of H. labyrinthus, and, like its 



