﻿ASTEROLEPID^E. 227 



38717. External and internal cast of an imperfect cranial shield ; 



Aires, near Elgin. A plaster cast taken from the im- 

 pression of the outer surface is shown, of the natural size, 

 in PI. VI. fig. 5, with explanatory lettering. 



Purchased, 1864. 



35995 a. Portion of median occipital, showing characteristic sensory 

 canals (PI. VI. fig. 6) ; Scat Craig. Purchased, 1861. 



35995 b. Median ventral plate ; Scat Craig. Purchased, 1861. 



35988-91. Eour proximal portions of articular bones of pectoral 

 appendages ; Scat Craig. Purchased, 1861. 



P. 4719 a. Portion of anterior ventro-lateral plate, with fragments 

 of the two articular bones in position ; Scat Craig. 



Purchased, 1884. 



P. 4719 b. Three imperfect dermal plates ; Scat Craig. 



Purchased, 1884. 



P. 5095. Articular portion of anterior ventro-lateral, and detached 



proximal end of articular bone of appendage ; Scat Craig. 



Presented by John Edward Lee, Esq., 1885. 



35995 c. Four plates of appendages, including the terminal; Scat 

 Craig. One of the more proximal elements is shown, in 

 outer view and transverse section, in PL VI. figs. 7, 7 a, 

 while another, a distal marginal, is similarly represented, 

 ibid. figs. 8, 8 a. Purchased, 1861. 



28873. The three type specimens of B. giganteus, Traquair, figured 



by Agassiz, under the name of Bothriolepis omatus, loc. cit. ; 

 Alves, near Elgin. Fig. 3 appears to represent a portion 

 of a lateral head-plate ; fig. 4, an imperfect ventro-lateral ; 

 and fig. 5, an imperfect dorso-lateral. Purchased, 1854. 



28874. Six similar impressions of dermal plates, very imperfect ; 



Alves. Purchased, 1854. 



28874 a. Fragment of plate ; Alves. Purchased, 1854. 



38718. Impression of small, ridged plate ; Alves. Purchued, 1864. 



Remains of a species of Bothriolepis from the Heads of Ayr, 

 originally associated with B. major by Traquair, are now regarded 

 by the same author as representing a distinct species, B. leptocheirus, 

 characterized by the length and slenderness of the appendages (to bo 

 described in Proc. Roy. Phys. Soc. Edinb., according to Traquair 

 in litt.). 



Q2 



