ON TWO NEW SPECIES OF CHIMERA. 3 



end of the insertion of first dorsal 51 times, in the total length of 

 body (excluding the parts from the end of the second dorsal to the 

 end of caudal filament) ; snout about 2, eye 3è, interorbital 4i-5 in 

 head ; height of head in front of the insertion of pectoral a little 

 lower than the greatest height of body ; the height in front of eye 

 li-li in the height of body ; spine of the first dorsal curved back- 

 wards, a little longer than the length of head and higher than the 

 first ray of the first dorsal, triangular in cross section, smooth with 

 a median keel anteriorly, grooved posteriorly, the distal third of its 

 length with recurved spinules ; this spinous roughness is weaker 

 than in phantasma and stronger than in mitstikurii ; first dorsal 

 subcontinuous with second dorsal by a fold of rayless skin ; height 

 of the anteriormost ray of first dorsal exclusive of its fleshy base 

 li in head; free margin of the first dorsal almost straight; ex- 

 ternal margin of the second dorsal even and slightly concave, its 

 posterior margin rounded ; height of the fin, measured perpen- 

 dicular to the upper margin of body at a point two-sevenths of 

 its length from the anterior end, 41 in head. Upper lobe of caudal 

 slightly higher than the lower ; height of the former measured 

 perpendicular to the upper margin of body 7 in head ; second 

 dorsal and upper lobe of caudal continuous with a deep notch. 

 Anal very low, falcate, continuous with the lower lobe of caudal, 

 but separated by a deep notch opposite the dorsal notch and 

 similar to but deeper than that of pha7itasma. Both caudal lobes 

 nearly as high as in mitsuhurii ; as in that species as well as 

 in phantasma the lower lobe extends more posteriorly than the 

 upper lobe. Distance from the dorsal notch to the end of caudal 

 filament 2 in body exclusive of head and the parts behind dorsal 

 notch ; in this proportion the species agrees with phantasma, 

 but not with mitsukurii in which the distance from the dorsal 



