lOO BIBLIOGRAPHY. 



The family MarginellidcE is not known in rocks older than 

 the Eocene, and the discovery of i8 fossil forms of this group 

 justifies the assertion that the Australian area was their chief 

 centre of habitation in the tertiary period. Of the eighteen 

 species cited in this paper, twelve are new to science and are 

 described by Mr. Tate. The new species are: — M. Aldingce, 

 Eocene Marl, Aldinga; M. Cassidifo?-mis, near Hamilton, Victoria. 

 Seven species — M. viiiscarioides, AI. nucula, M. inermis, M. 

 Winteri, M. Woods/, AI. septemplicata and Erato minor are from 

 Muddy Creek, Victoria. AI. propinqua, Miocene, Muddy Creek, 

 and upper beds of R. Murray Cliffs, Victoria. Erato Australis. 

 Eocene Marls, Aldinga, S. Australia. This important work is 

 brought to a close by a conspectus of the species and valuable 

 remarks on their affinities. 



On a new species of Chiton (Chiton scabridus) 

 lately found on the British coast (From the Annals and 

 Magazine and Natural History, July, 1880). — By J. G. Jeffreys, 

 LL.D., F.R.S. 



This species was first collected by Mr. Pidgeon at Goodring- 



ton, Torbay, and has since been found at Jersey by Mr. Duprey. 



When first submitted to Dr. Jeffieys by Mr. Pidgeon he considered 



it to be a variety of C. cancellati/s, but subsequent communications 



from Mr. Duprey induced him to consider it distinct. The shell 



is not convex or gibbous like cancel! at us and is proportionately 



broader, and the row of tubercles are half in number, more raised 



and coarser, giving a rough or scabrous aspect to the shell, there 



are also some differences in the animal. Mr. Duprey finds the 



species associated with C. caiueHatus as well as R. lactea and 



R. stiiaiula in the lower part of the littoral zone. 



Tropical IVIcllusca recently dredged at Fort Jack- 

 son Heads (From the Proceeoings of ihe Linnean Society of 



.I.e., iii., April, ISSl 



