﻿218 



SUPPLEMENT TO THE CRAG MOLLUSC A. 



PAGE. 



289 \ 

 s 158 J 



283 \ 

 s 1G2 J 



2811 

 s 161 J 



266 



2761 

 s 159/ 

 s 159 



2791 

 s 162 J 



2771 

 S 163 J 



291 



2981 

 s 166 J 



s 163 

 2961 



s 165 J* 



s 164 

 2951 



s 165 J 



s 165 



s 164 



292 

 300 



s 172 

 s 171 

 s 170 



s 169 



s 168' 

 s 171 



Saxicava carinata, S. Wood 



Panopea Paujasii, Men de la 1 

 Groye J 



— ? Norvegica, Spengler . . . 

 Pholadornya hesterua, J. Sow..., 

 Sphenia ovata ? 



— Binghauni, Turt 



My a arenaria, Linn 



— truucata, Linn. 



Glyciineris angusta, Nyst. 



Pholadidea papyracea, Solander 



Pholas Candida, Linn 



— ■ crispata, Linn 



— brevis, S. Wood , 



— cylindrica, J. Soiv , 



— dactylus ? Linn 



— parva, Penn 



Gastrochama dubia, Penn 



Teredo Norvegica, Spengler.. 



BRACHIOPODA. 



Lingula Dumortieri, Nyst 



Discina fallens, S. Wood 



Argiope cistellula, S. Wood 



Terebratulina caput-serpentis, 1 

 Linn. J 

 Terebratula grandis, Plumenb.. 

 Khynchonella psittacea, Chemn 



REMARKS. 



J P. glycimeris, Born. P. Aldrovandi, Phil. De- 

 \ rivative in Red Crag. 



Northern seas only. 



f Sphenia Pinghami of Crag Moll. 5. ovala is a' f 

 1 Pacific shell. 



J Only fragments in Red Crag, and these probably 

 \ derivative. Not G. siliqua. 



("The specimen of Pholadidea in Crag Moll., Tab. 

 J XXXI, fig. 23, is some derivative, and its 



| species being doubtful, it is excluded from 



[_ the list. 



The tubes only of both these species are found 

 in the Red Crag, and it is probable that they 

 are there only as derivatives. 



After rejecting species which are mentioned in it as doubtful or undeterminable, and 

 also every repetition of a species in the form of a variety, and rejecting from the Red 

 Crag all species marked in the list as derivative, or as possibly or probably so, and (with 

 the exceptions mentioned in the footnote 1 ) treating all ?'s as X 's, the result of the foregoing 

 list is, as regards the Gasteropoda and Bivalvia, given on the following page : 



I have made no analysis of the Scrobicularia Crag, as the fauna obtained from it is too 

 meagre to make it worth while. 



1 The following species occurring in the columns of the list are rejected from the summary, viz. In 

 the Cor. Crag, Pecten varius, Pecten niveus, Lima plicatula, Modiola modiolus, Artemis lentiformis, Tapes 

 pullastra, and Thracia distorta. Pijramidclla Iceviuscula is also treated as not living. In the Walton 

 Red Crag, Tapes pullastra, Cyprinu Islandica, Tellina obliqua, and Tellina pratenuis. In the rest of 

 the Red Crag, Solecurtus strigillatus. In the Fluvio-marine Crag, Scalaria clathratula, Scalaria foliacea 

 Rissoa conjinis, Uinnites Cortesyi, Astarte Burlinii, and Astarte Omalii. 



