PHILIPPINE MACROUKOID FISHES GILBERT AND HUBBS. 423 



Albatross 

 station. 



5460 



Locality. 



Off east coast of Luzon. 



5467 do. 



5470 ' do 



55S7 I Near Sibuko Bay, Borneo.. 

 564S j Buton Strait, near Celebes. 



Number 

 of speci- 

 mens. 



Type. 



This remarkable species strikingly differs from all others referred 

 by us to Coryphaenoides in the anterior position of the anus, which 

 is located well in advance of the anal fin. But it has six branchios- 

 tegal rays, and its reference to Coryphaenoides is corroborated by 

 the entire appearance of the fish. Macrurus heyningeni Weber, 1 a 

 species recently described from the East Indies, is described as 

 having six branchiostegal rays and the anus remote from the anal 

 fin. It probably is a species of C oryphaenoides, but certainly is not 

 C. hyostomu-s. 



The orbit of the type-specimen is contained 4.3 times in the head, 

 1.3 times in the snout, and 1.0 times in the interorbital space. In 

 the other specimens the orbit is contained 4.05 to 4.4 times in the 

 head, 1.2 to 1.4 times in the snout, and in some slightly exceeds in 

 length the least interorbital width. The large flap which covers 

 the anterior nostril in the type is not constantly enlarged. The 

 mouth, as usual in the genus, is U-shaped, and longer than broad; 

 the statement to the contrary, in the type description, is due to the 

 frequent distortion of the head, which throws outward the walls 

 of the branchial cavity. The suborbital ridge is especially well 

 developed, extending backward beyond the orbit, but not to the 

 preopercle ; the total length of the ridge is equal to that of the man- 

 dible. The tip of the snout is armed with short but robust spinules 

 which display no definite order in their arrangement; the lateral 

 rostral tubercles are indistinct. The slit before the first gill-arch is 

 0.3 as long as the orbit. There are 5 or 6 rows of scales between the 

 origin of the second dorsal and the lateral line, excluding the scale 

 perforated by the lateral line. 



The dorsal spine bears 3 to 5 indistinct or small serrations on its 

 anterior edge, confined to a basal portion containing the length of 

 the orbit 1 to 1.8 times. The head is contained 1.88 times in the 

 dorsal spine in the type, 2.02, 2.08, 2.17, 2.63+ , and 2.83 times in 

 five of the other specimens. First dorsal, II, 9 in all specimens but 

 one, which has 8 soft rays ; ventral fin with 8 rays in all cases ; pec- 

 toral rays, 17 to 20. 



1 Die Fische der Sioojw-Expedition, 1913, p. 156, pi. 5, fig. 3. 



