315 



Lamna appendiculata, Agassiz. 



Otoclus (ippendiculaius, L. Agassiz. 1843. Poiss. Foss., vol. in, p. -70, i;l. xxxii, figs. 



1—25. 

 Lamna appendiculata, A. S. Woodward. 188!t. Cat. Foss. Fishes Brit. Mas., Part i, 



p. 393 ; which see for a full list of synonyms and references for 



this species. 



A rather small, well preserved and practically perfect shark's tooth, 

 from Brennan Creek, near Wellington, V". I., collected by the Rev. G. 

 W. Taylor in 1901, and presented by him to the Museum of the Survey, 

 appears to be referable to this species. 



The toolh is strongly compressed, rather thin and a little broader than 

 high. Its maximum height is 12.2 mm., and its greatest breadth 13.5. 

 The crown is obliquely pointed and prominent, with a small denticle on 

 each side. Its cutting edge is extremely thin and sharp, and its base 

 very shallowly but angularly emarginate. At its mid-breadth and just 

 above the base there is a faint shallow depression, partially filled by a 

 very obscure and short longitudinal plication, with a still more obscure 

 and shorter one on one side. The whole surface of the crown is smooth 

 and polished. The root of the tooth consists of a flat strip of tissue 

 without enamel, from 3.5 to 4 mm. high, running practically parallel to 

 the root of the crown. 



An imperfect but otherwise very similar tooth was collected by Mr. 

 J. B. Tyrrell in 1885, from the Cretaceous rocks on the Battle River, 

 Saskatchewan. 



Although Agassiz once thought that this species is peculiar to the 

 Chalk, Dr. Woodward now says that it ranges in time from the Gault to 

 the Upper Chalk, and, in its geographical distribution, from the south 

 of England and Northern Europe to New Jersey and North Queensland. 



CRUSTACEA. 



Decapoda. 



Brachyura. 



Plagiolophus Vancouverensis, Woodward. 



Platjiolophus vancouverensis, H. Woodward. 1890. Quart. Journ.Geol. Soc. Lend., vol. 

 IJI, pp. 220-228. 



The original description of this species is'as follows, but the number 

 prefixed to the name is omitted, and the numbers of the two figures are 

 altered to suit this volume. 



