CTEXOTHRISSin.K 
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1883. Beri/.v miorocephalus, A. S. Woodward, Proc. Geol. Assoc, vol. x. 
p. 827. 
1899. Ctenothrissa microcephala , A. S. Woodward, Ann. Man-. Nat. 
Hist. [7] vol. iii. p. 491. 
Type. Imperfect fish ; British Museum. 
An elongated species, attaining a length of about 0-15. Length 
of head with opercular apparatus erpial to the maximum depth of 
the trunk, which is contained about twice in the length from tho 
pectoral arch to the base of the caudal fin. Head and fins as in 
C. radians, except that the pelvic fins appear to bo less elongated. 
Scales very large, the lateral line extending along the fourth "scries 
above that which forms the ventral border of the flank ; serrations 
of scales coarser than in C. radians. 
Form. 4' Loc. Turonian : S.E. England. 
4034, 4036. The two typo specimens described and figured by 
Agassiz, loc. cit. ; Lower Chalk, Lewes, Sussex. In the 
first specimen, tho short, toothed premaxillse are distinct 
in front of the maxillae; in the second specimen, part of 
the maxilla bears similar blunt teeth. Mantell Coll. 
25887. Small specimen erroneously referred to “ Beryx ” radians 
by Dixon, loc. cit..-, Lower Chalk, Sussex. Dixon Coll. 
P. 6486-68. Three large specimens, variously imperfect ; Lower 
Chalk, S.E. England. Becldes Coll. 
P. 392. Imperfect fish showing general proportions ; Lower Chalk, 
S.E. England. Presented by the Earl of Dude, 1881. 
49881. Fine but imperfect specimen displayingfhe toothed maxilla, 
a supramaxilla, a preoperculum, parts of tho fins, and tho 
scales of the displaced squamation ; Lower Chalk, lleigate, 
Surrey. There is an ovoid scale between the bases of 
the pelvic fins. Capron Colt. 
49874. More imperfect smaller fish, showing frontal region of 
cranial roof and maxilla: ; Lewes. Capron Coll. 
49875. Portion of small head and abdominal region; Clayton, 
Sussex. Capron Coll. 
5419. Small trunk, showing pectoral and pelvic fins, associated 
with another fish ; Lewes. 
Presented by P. E. Coombe, Esq., 1888. 
49876. Imperfect small specimen, wanting tail ; Lower Chalk, 
Glyndo, near Lewes. Capron Coll. 
