PHILIPPINE MACROUKOID FISHES — GILBERT AND HUBBS. 497 



in head — second dorsal spine, 2.6 (2.63 to 2.7) ; pectoral fin, 2.75 

 (2.45 to 2.95), not notably shorter in large specimens; outer ventral 

 ray, 2.65 (2.4 to 3.35), varying without apparent relation to the 

 length of the fish; second ventral ray, 5.25 (4.4 to 5.3). 



Color, brown, usually darker than in C. commutabilis; it is darker 

 above than below; the belly is sometimes dark; opercle with a dark 

 blotch. The young have darker bars on the tail, the first being 

 located below the front of second dorsal, the second being separated 

 from the first by an interspace about as long as the orbit ; these mark- 

 ings are very faint in larger specimens. The fins are all dark. The 

 lining of the buccal cavity is bluish black ; that of the branchial cav- 

 ity, brownish black, with an abrupt whitish margin on the opercular 

 and branchiostegal membranes; the parietal peritoneum is dark 

 purplish. 



C. smithi is closely related to C. flabellispinis (Alcock), 1 known 

 from a specimen dredged by the Investigator at a depth of 719 

 fathoms in the Arabian Sea. Certain differences, however, make 

 the separation of the two imperative, as may be seen from the fol- 

 lowing table : 



Spinous carinae on scales 



Pyloric caeca 



Pectorals 



Color of body 



Color of peritoneum 



Spines on scales 



Barbel 



Orbit 



Double scale row of infraorbital 

 ridge beginning 



C. flabellkpinis. 



8or9 



About 40 



Decidedly shorter than postorbi- 

 tal. 



Stone-gray 



Silvery-gray 



Judging from figure, much weaker 

 occasionally the last spine of 

 one rib or more projects beyond 

 the edge of the scale. 



Not much more than half eye 



1.8 in postorbital (measured on 

 Alcock's figure). 



Behind front of orbit (figure) 



C. smithi. 



3 to 7. 

 19, 20. 

 Longer than postorbital. 



Brown. 



Purplish-black. 



Stronger; last spine or carinae 



usually projects beyond margin 



of scale. 



About one- third orbit or less. 

 1.0 to 1.3 in postorbital. 



Behind middle of orbit. 



We are far less certain as to Brauer's 2 Macrurus {C oelorhynchus) 

 fldbellispinis. Most of his measurements and counts agree with those 

 of C. smithi, and it is not unlikely that his specimens from the west 

 coast of Sumatra are referable to that species. But Brauer has 

 failed, as in other cases, to designate the locality from which his 

 described and measured specimens came. He had other specimens 

 from southern and northeastern Africa. 



The relationships of G. smithi with C. commutabilis are less in- 

 timate. C. smithi has constantly larger scales ; several carinae instead 

 of a median keel on the scales of occipital ridges; browner and 



1 Alcock, Journ. Asiatic Soc. Bengal, vol. 63, pt. 2, 1894, pp. 123, 126 ; Illustrations 

 of the Zoology of the Investigator, pi. 16, figs. 2 and 2a ; Desc. Cat. Indian Deep-Sea 

 Fishes, 1899, p. 107. 



2 Brauer, Die Tiefsee-Fische. 1906, p. 258. 



