14 SUPPLEMENT TO THE CRAG MOLLUSCA. 



but I believe it to be referable to the Russian fossil. Mr. Miller, of Ipswich, has obtained 

 from the same locality a second specimen, and Mr. Harmer has very recently sent me 

 another. It somewhat resembles a dwarf variety of N. reticulata, but it is, I believe, a 

 full-grown shell and specifically distinct, as described by Mr. Bell. The accidental 

 coincidence in the adoption of the name is curious. Mr. Bell also gives it (loc. cit.) from 

 the Red Crag of Waldringfield. 



Nassa pusillina, S. Wood. Supplement, Tab. II, fig. 7. 



Spec. Char. N. Testa parvd, elongato-conoided, longitudinaliter costatd ; costis 5 — G, 

 spiraliter striata ; striis paucis, magnis, elevatis ; anfraciibus planiusculis aperturd ovatd ; 

 labro extus varicoso, intus dentato. 



Axis, § ths of an inch. 



Localities. Fluvio-marine Crag, Bramerton. Red Crag, Butley. Middle Glacial, 

 Billockby. 



In Dr. S. P. Woodward's list of Norwich Crag fossils this is inserted as " Nassa • , 



sp. (slender pointed), Norwich ; examples in all collections ;" from which remark, I presume, 

 it is not rare near Norwich. The varices are rounded, with a considerable space between 

 each ; the suture is well defined, and the ribs slightly oblique, but the artist has made 

 them rather too much inclined. It is very unlike all the other Crag Nassas, coming nearest 

 to N. consociata, but quite distinct ; it is identical in all respects with a shell in the Museum 

 of the Geological Society presented by the late Jas. Smith, of Jordan Hill, but which is 

 without a name, marked " Raised Beach, Gibraltar." It may, therefore, probably some day 

 be found living in the Mediterranean area. It is by no means rare at Billockby. 



It is the shell referred to as N. pusio in the paper by S. V. Wood, jun., and E. W. 

 Harmer, in ' Brit. Assoc. Reports ' for 1870, but I find the name pusio has been previously 

 occupied. 



Nassa rkticulata, Linne. Supplement, Tab. VI, fig. 5. 



Buccinum reticulatum, Linn. Syst. Nat., edit, xii, p. 1205. 



Locality. Post-glacial, Kelsey Hill and Hunstanton. 



This shell is very common at Kelsey Hill, but I do not know it from any Glacial 

 or Pre-glacial formation in Britain. The specimen figured was found by my son at Kelsey. 

 It has a great range in the recent state. The shell figured under this name from Bordeaux 

 is, I believe, distinct. A fragment of N. reticulata, obtained from the beds of the Severn 

 Valley, was sent me for inspection by Mr. G. Maw. 



