THE 



GEOLOGICAL MAGAZINE, 



NEW SERIES. DECADE II. VOL. I. 



]ffo. X.— OCTOBER, 1874. 



L — On the West Indian Tertiaby Fossils. 



By E. J. Lechmerb Guppy, F.L.S., F.G.S., etc. 



(PLATES XVI., XVII., AND XVIII.i) 



{^Continued from the September Number, p. 411.) 



Strombus pugiloides, n. sp. 



The shell for which I propose the above appellation was con- 

 sidered to be Strombus pugilis by Mr. Carrick Moore. The name 

 was misprinted fragilis in his paper in the Journal of the Geological 

 Society, vol. xix. p. 511. In my papers on the Tertiary fossils of 

 Jamaica and the West Indies, the species was recorded under the 

 name Str. pugilis. In ordinary specimens like those usually found 

 in Jamaica, Haiti, and elsewhere, the only well-marked differences 

 that can be noticed between the fossil shell and the recent Strombus 

 pugilis are that in the former the last whorl is usually devoid of 

 the spiniform tubercles, and that the shell is of shorter and broader 

 figure. But some examples, supplied me by my friend Mr. Vendryes, 

 exhibit an unexpected character. They show chevron-shaped bands 

 of colour, about 12-15 on the last whorl. Each band takes the shape 

 of a V, the apex of which occurs near the middle of the whorl, 

 and forms an angle of about 30° pointing backwards or away from 

 the aperture. These bands of colour are about two mm. wide and 

 the spaces between them are about three mm. Numerous specimens 

 of the recent Str. pugilis have passed through my hands, but I have 

 never noticed the slightest approach to such a character. The recent 

 shell is pale red or pink only relieved by an indistinct band of paler 

 tint following the middle of the whorl. A less constant difference 

 may be found in the low rounded lamellar dentition inside the outer 

 lip which is very faint or altogether wanting in Strombus pugilis, but 

 more marked in the fossil. 



Murex collatus, n. sp., PL XVI. Fig. 8. 



Ovate, rimate, slightly flattened, adorned with numerous thin 

 slightly fimbriate or crenulate varices often doubled, especially the 

 later ones ; about seven on the last whorl ; their interstices indistinctly 

 crossed by low transverse costee which terminate in points on the 

 varices ; the upper point large, acute and projecting, giving an 

 angulate appearance to the shell : varices uniting below to form an 

 irregular and contorted canal. Whorls 6-7, somewhat angulate. 

 Spire sharp. Outer lip expanded and crenulate, obtusely dentate 



1 Plates XVI. and XVII. having been unfortunately lost in transitu from Trinidad, 

 they are now being re-drawn and wiU appear in the November Number. — Edit. 

 Geol. Mag. 



decade ii. vol. i. no. x. 28 



