1865. | MR. F. DAY ON THE FISHES OF COCHIN. 37 
fin; a second commenees at the angle of the mouth, and proceeds 
to lower half of caudal. Dorsal fin grey; caudal scarlet, with two 
black longitudinal lines ; pectoral, ventral, and anal yellowish, with 
a dark grey base. 
Rare ; only one specimen obtained, in October 1863. 
FisTULARIA SERRATA, Cuv. 
B.vii. D.15. P.15. V.6. A.14.° C.2+6/2|6+2. 
Length of specimens from 1874; to 23745 inches. 
Not rare. 
MasTacEMBALUS ARMATUS, Lacép. 
Ahlee (Mal.). 
B.vi.. D2 37|74.. -P. 23. A. 3|79." ©. 15. 
Length of specimens from 958; to 18;45 inches. 
Common in the rivers. They are dangerous to handle, on account 
of their dorsal and anal spines, as well as those on the preeoperculum 
and in front and below the orbit. 
Fair eating ; but best ina dry curry. They salt well. 
MASTACEMBALUS GUENTHERI, Day, sp. nov. 
B. vi. D. 27-28 60-64. P.15. A. 3 62-64. C.9. 
inches. 
Length of specimens from .. 4355 to 7 inches. 
—ofhead .......... 1, or about 1-7th of total length. 
——— of pectoral ........ =>, or about 1-23rd of total length. 
— @L CAUARL «o/s 5 occ yn z{5, or about 1-17th of total length. 
of base of hard dorsal 2;8,, or about 2-5ths of total length. 
of base of soft dorsal 2;4,, or about 1-3rd of total length. 
——— of anal.........«.+.. 2,55, or about 2-5ths of total length. 
Height of head .......... z's, or about 1-23rd of total length. 
RA BODY vas sant {>> or about 1-9th of total length. 
— of soft dorsal ...... zy, or about 1-23rd of total length. 
— CET NGO eee =, or about 1-12th of total length. 
Diameter of eye =!; length of head; eyes slightly wider apart, 75 
from end of snout. 
Superior maxillary longer than the inferior ; and soft snout ex- 
tends 1th of an inch beyond the end of the jaw. Cleft of mouth 
small, and extending about halfway to the orbit. Praeoperculum with 
two spines at its angle, directed backwards and downwards, and some 
fine ones along its lower limb. A rather long and strong, sharp, 
erectile preeorbital spine. Thirteen rows of scales between orbit and 
angle of the preeoperculum. The whole of the head and between 
the orbits scaled. 
Teeth. Several rows of sharp-pointed teeth, directed backwards, 
in both upper and lower jaws. 
Fins. Dorsal spines strong, short, and sharp, commencing at about 
the termination of the first fifth of the body. Soft dorsal, caudal, 
and anal united. Anal spines strong, the centre one the longest and 
