14 SECOND SUPPLEMENT TO THE CRAG MOLLUSCA. 



the body whorl and upon the preceding volution. The apex probably was sharp, but 

 the specimen is there slightly broken. The shell is not quite so robust 

 in proportion to its length as the artist has represented it. It some- 

 what resembles M. Haidingeri, from the Vienna beds shown in Tab. 

 23 of Dr. Homes' work ; but his figure differs from our present shell 

 in having no denticulations on the outer lip, and in having the varices 

 strongly continued down the canal. 



In consequence of the unsatisfactory representation to which I have 

 referred, I annex a cut made from a drawing which shows the 

 characters of the shell more accurately. 

 The appearance of the specimen is not at all suggestive of its being a derivative ; and 



though obnoxious to the uncertainty which I have before (p. 3) mentioned as attaching 



to the specimen from Boyton, the specimen presents altogether the appearance of a 



genuine fossil of the Coralline Crag. 



MUREX PSEUDO-NYSTII, S. Wood. Tab. I, fig. 8 a, b. 



M. Testa elongato-fusiformi, crassd ; spird elevatd, anfractibus septenis, converts ; 

 superne subangulatis, spiralite rlate striatis ; varicatis, varicibus, 7 10, tenuibus, lamellosis, 

 compressis ; ultimo anfractu equaliter longiore ; aperturd ovatd, canaliculata, canali 

 attenuate, labro intus pauci denticulate. 



Axis, 1 Jth of an inch. 



Locality. Cor. Crag? Boyton. 



A perfect specimen as above represented has been sent to me by Dr. Reed, and so 

 far as I am able to ascertain it appears to be specifically distinct from any previously 

 described species. The shell may be described as elongately fusiform, with seven or 

 eight convex volutions, the upper part of these somewhat depressed, giving a slight 

 shoulder to the volutions ; coarsely striated in a spiral direction, but above the shoulder 

 these striae do not extend : the apex was probably sharp and acute, but it is slightly 

 broken ; aperture small and ovate, and the outer lip extremely thick ; and on which there 

 were two prominent denticles, and one nearly obsolete on the lower part of the inner lip ; 

 it has a long canal, slightly curved, and open. The first two volutions appear to be 

 smooth or destitute of marking either spirally or longitudinally. 



I have compared it with specimens of Von Konen's species Nystii, kindly sent me by 

 Dr. Nyst, and with others from Edeghem, in Belgium, 1 sent me by M. Rutot, and 

 although it approaches that shell in several respects, it does not do so sufficiently to 

 justify any identity with it. Nevertheless, to indicate its affinity I have assigned it the 



1 This deposit of Edeghem has hitherto been regarded as miocene, but it is placed by M. E. Vanden 

 Broeck with that of Kiel and some other localities near Antwerp as oldest Pliocene " Esquisse Geologique 

 et Paleontologique des depots Pliocenes des environs d'Anvers," p. 35. 



