CHIKOTHEICID^^:. 
283 
may be interpreted either as small, antero-posteriorly 
elongated scales, or merely as remains of the muscle- 
plates. Lewis Coll. 
49529. Small trunk, displaying the tins. The relatively small 
pectoral exhibits its single, much elongated ray. The 
longest rays of the dorsal are considerably more than half 
as long as the trunk from the pectoral arch to the base of 
the caudal tin. Lewis Coll. 
49527. More imperfect distorted specimen, either of this or the next 
species. Leiuis Coll. 
Chirothrix lewisi, Davis. 
1887. Cheirothrix lewisii, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. iii. p. 528, pi. xxvi. tig. 2. 
Tyjpe. Nearly complete tish ; British Museum. 
A robust species, attaining a length of about 0T5. Length of 
head with opercular apparatus equalling about twice the maximum 
depth of the trunk, and contained one and a half times in its length 
from the pectoral arch to the base of the caudal tin. Fins as in the 
type species. 
Form. Log. Upper Cretaceous : Sahel Alma, Mt. Lebanon. 
48079, P. 4740. Type specimen, with incomplete counterpart, 
described and tigured by Davis, loc. cit. One of the 
pectoral tins (“ short subsidiary tins of Davis) is imper¬ 
fectly preserved, showing the elongation of one of its 
middle rays. The very stout pelvic arch (“pectoral arch'^ 
of Davis) is crushed upwards and exposed either from 
above or below, the pelvic tin thus raised upon the tiank 
(“pectoral tin” of Davis) being closed, while the other 
pelvic tin is widely expanded below. The two foremost 
rays of the pelvic tin are closely articulated but not divided 
distall3g while all the others are tinely divided. Most 
of the rays of the median tins are shown to be divider 
distally, Lewis Coll. 
48080. Fragmentary specimen. 
Lewis Colh 
Chirothrix guestfalicus (Schliiter). 
1868. Meyapus guestfaliens, C. Schliiter, Palseoutogr. vol. xv. p. 274, 
pi. xliii. tig. 5. 
1894. Meyistopus guestfalicus, H. Landois, Neiies Jahrb. vol. ii. p. 234, 
pi. V. 
