CTENOTHRISSIDJE. 
127 
in their exposed portion, marked with a few radiating grooves in 
their covered portion ; hinder margin not pectinated ; lateral line 
forming a conspicuous rounded ridge on the scales it traverses in 
the caudal region. 
Aulolepis typus, Agassiz. 
1837-44. Aulolepis typus, L. Agassiz, Poiss. Foss. vol. v. pt. i. p. 14 
pt. ii. p. 101), pi. lxa. figs, 6-8. 
1888. A ulo'e.pis typm, A. S. Woodward, Proc. Geol. Assoc vol x 
p. 324. 
1895. Aulolepis typus, A. S. Woodward, Proc. Zool. Soc. 1894, p. 600 
(in part), pi. xliii. figs. 4, 0 (non figs. 2, 3, 6). 
1900. Aulolepis typus, A. S. Woodward, Ann. Mag. Nat. Hist. T71 
vol. v. p. 324, pi. ix. fig. 2. 
Type. Imperfect fish ; British Museum. 
The type species, att aining a length of about 0-2. Length of 
head with opercular apparatus equalling about half that of the 
trunk from the pectoral arch to the base of the caudal fin. Length 
of the cranium somewhat less than the distance between the 
occiput and the origin of the dorsal fin ; anal fin considerably nearer 
to the caudal than to the pelvic pair. Each ridge on the caudal 
scales produced by the lateral line, smooth and widest in front. 
Form. &; Loc. Turonian : Sussex, Kent, and Surrey. 
4033. Type specimen ; probably from Lower Chalk, Lewes. The 
right pelvic fin is shown and mistaken for the pectoral by 
Agassiz, whose figure is inaccurate in several respects. 
In this the mandibular ramus is restored, and the ridges 
of the lateral line are represented too far forwards • the 
indications of the pelvic and anal fins are hypothetically 
added ; while the caudal vertebral centra are considerably 
too long as represented. ManleU Coll. 
IP. 4247. Imperfect head and scattered remains of the trunk in side- 
view, with truces of the anal fin : probably the Earl of 
Enniskillen’s fossil noticed by Agassiz and the basis for 
his statement that the pelvic fins “out leur insertion 
a-peu-pres a la moitie du corps” ; (?) Burham. The head 
and preoperculum are figured loc. cit. 1894, pi. xliii. fig. 4. 
Enniskillen Coll. 
47932. Fine large fish in counterpart, much crushed and distorted, 
exhibiting nearly 30 of the vertebrae, the expanded hmmal 
spines at the base of the caudal fin, portions of this fin 
