112 



The major diameter of the eye is 3g in the length of the head. 



Outer row of teeth in the upper jaw considerably enlarged. 



Barbel stout, as long as the eye. 



Scales of the body small, densely covered with sharp capillary spinelets 

 some of which project far beyond the edge of the scale. 



Eight rows of scales between the last ray of the first dorsal fin and the 

 lateral line. 



2nd spine of the dorsal fin as long as the head. 



Twenty-two long vermiform pyloric caeca. 



Largest specimen 10 inches long. 



Andaman Sea 130 to 250 fathoms : Bay of Bengal, 240 and 410 fathoms. 



Kegd. Nos. 11660, 13133, 13173. 



Palatksy, quoted by Goode and Bean in Oceanic Ichthyology p. 531, has 

 changed the name of this species to M. sesqiricnnciatus. The word sesqui- 

 cunciatus, if it has any meaning, might mean 'an ounce and a half.' The name 

 semiquincunciatus was meant to express the fact that the rows of spinelets on the 

 scales are arranged like the principes and hastati of the Roman legion, — that is 

 to say in quincuncem, but without the triarii, or in a semi-quincunx. The idea 

 may perhaps be a little far-fetched, but the etymology appears to me to be 

 perfectly correct. 



89. Macrurus (Macrurus) polylepis, Alcock. 



Macrurus polylepis, Alcock, Ann. Mag. Nat. Hist., Nov. 1889, p. 395; Jonrn. As. Soc. Bengal, Vol. LXIII. 

 pt. 2, 1894, p. 127. Illustrations of the Zoology of the Investigator, Fishks, pl. XXIX. fig. 4. 



B. 7. D. r+11. P. 19. V. 11-12. 



Differs from M. investigatoris only in the following particulars : — 



The greatest body-height (at the eminence of the first dorsal fin) is only 

 equal to the length of the head behind the middle of the eye. 



Snout decidedly shorter than the eye, the median tubercle far more distinct 

 than the lateral ones. 



Major diameter of the eye nearly a third the length of the head, and nearly 

 twice the width of the interorbital space. 



Though the mouth is not large, the upper jaw is much longer than the 

 snout and reaches behind the middle of the eye. 



Outer row of teeth in the upper jaw much enlarged. 



Barbel about as long as the eye. 



Scales small, with about seven series of sharp capillary spinelets, some of 

 which project beyond the edge of the scale. 



