126 PROCEEDINGS OF THE COXCHOI.OGICAL SOCIETY. 



during the expeditions with Dr. Jeffreys. Of Neptitnia (Ft(s//s) nntiqmis 

 there is a wonderful series, a couple of drawers full, from various places, 

 showing every variation of size and form, and some very curious monstrosities, 

 e.g., can II at II III, sinistrorsiim, bioperciilatuin, cinctiiiii, and scalai-ifoniie. Dr. 

 Norman pointed out that the scalariform variety was generally caused by 

 an annelid forming its tube in the suture, which usually wore away, leaving 

 the whorls of the shell detached. Some specimens were pointed out with 

 the annelid tube running right along the suture from apex to base, and 

 quite intact. The series of Neptmiia despecta, Biicciiiopsis dalei. Sip/to 

 (FusHs) pivpini/iiiis, S. Jt'^iej'siaiius, and many other species of Sip /lo ave 

 very extensive, and the specimens in splendid condition. 



Biuchiinii iindaiiiiii, its numerous varieties and kindred species, filled 

 many drawers. The President demonstrated very plainly and forcibly that 

 (with I he exception of />. hiiiiipliseysiaiiiiin, which is well distinguished as a 

 good species by its peculiar operculum) the numerous so-called species, such 

 as B. cilia fiiiii, B. i^laciale, B. iiicx/iaiistiiiii, B. fiisiforiiie, B. fnimarckiaiiuiii, 

 etc., were really only forms ofi?. nn/afiini. altered in size and form by 

 circumstances of locality, depth of water where found, and other causes. 

 He showed the remarkable influence of depth of water in altering the form, 

 and very clearly demonstrated how the species ran into one another. He 

 showed a wonderful series of curious monstrosities, besides sinisfrorsiiiii, 

 cariiia/itiii, iiiipciia/e, aciiiniiiafiiiii, etc., which were also surprising from 

 their nundier and perfect condition. Altogether the Biicciiiuiii and Fiisii.-; 

 groups were a treat in themselves, and alone well worth going to see ! 



Cypnea (4 species), Trii'ia (3), Ozmla (4) were of no special interest, 

 beyond giving an idea of the number to be found North of the Tropic of 

 Cancer. There is a fine set of Aporrhais, especially A. pes-pelccani var. 

 tongispinostnii Norman, a fine form well described by its name ; Ap. serresi- 

 aniis and its var. macaiti/rcir ; and Ap. occidcn/alis are also very nice and 

 perfect. There are three species of So/ariiii/i, and owe of Bifroiilia, this last 

 a singular shell with the whorls completely detached. 



As to Bissoa, Odosfo/iiia, and kindred genera of small shells, it was 

 hopeless to attempt to examine them, occupying as they did drawer after 

 drawer, in hundreds of tubes. Their name is ' legion I ' Of Jaiit/iiiia and 

 Sea/aria there is a beautiful series, the latter numerous in species and locality 

 sets, and amongst them many fine specimens. A fine series of S/ylifer fiir- 

 foni in situ upon Echinus viiliaris, and some enormous examples of Liltoriita 

 littorea are particularly noticeable. 



The Troc/iidu are very fine, some of the British forms being especially 

 so, notably 7! magus : so also were Fissurella and Eiuarginula, with a 

 large and beautiful series of Em. crassa and its var. depressa. Acmcea, 

 Patella, etc., were Avell represented by numerous 'locality' and 'variety' 

 sets. Chiton was represented by twenty-six species, all very nicely preserved, 

 including a grand series of C. marmoieus from Firth of Clyde. It is scarcely 

 possible for one accustomed to the ordinary small forms of the common 

 British Chitons, such as C. margincitiis and C. cinereus, to credit them as 

 British. There were also some enormous specimens of Cryptochitoti stclleri. 



J.C. \ii., Oct. 1S92. 



