A.STEROLEPID J$. 
227 
38717. External and internal cast of an imperfect cranial shield; 
Alves, near Elgin. A plaster cast taken from the im¬ 
pression of the outer surface is shown, of the natural size, 
in PL VI. fig. 5, with explanatory lettering. 
Purchased, 1864. 
35995 a. Portion of median occipital, showing characteristic sensory 
canals (PL VI. fig. 6) ; Scat Craig. Purchased , 1861. 
35995 b. Hedian ventral plate ; Scat Craig. Purchased, 1861. 
35988-91. Pour proximal portions of articular boues 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. Pour plates of appendages, including the terminal; Scat 
Craig. One of the more proximal elements is shown, in 
outer view and transverse section, in PL V I. figs. 7, 7 a , 
while another, a distal marginal, is similarly represented, 
ihicl. figs. 8, 8 a. Purchased, 1861. 
28873. The three type specimens of B. giganteus , Traquair, figured 
by Agassiz, under the name of Bothriolepis ornatus, loc. cit . ; 
Alves, near Elgin. Pig. 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. Purchased, 1864. 
Bemains 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 tfie length and slenderness of the appendages (todbe 
des roriboeP in Proc. Boy. Phys. Soc. Edinb., according to Traquair 
in HU.). \mr% 
<ct 2 
