FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 53 

 ANALYSIS OF SPECIES OF PENTANCHUS 



a'. Parapristubus. Nasal valves entire, without cirri. 



&\ First dorsal origin behind middle in total length ; pectoral reaches % to 

 ventral ; caudal more than 2 in rest length of body. 



c\ Anal and subcaudal equally long spongiceps 



&. Anal about % long as subcaudal verweyi 



6^ First dorsal origin vrell before middle in total length ; pectoral nearly 



reaches ventral ; caudal less than half rest length of body herklotsi 



al Pentanchus. Nasal valves with at least small cirrus anteriorly. 

 d\ Dorsals equal, or nearly so. 

 &. Pectoral not reaching ventral 



f\ First dorsal inserted before midlength macrorhynchus 



f. First dorsal inserted midway in length platyrhynchus 



e^. Pectoral quite reaches ventral profundicolus 



d". Second dorsal larger than first saldanha 



mm. 



FiGDEE 2. — Pentanchus spongiceps (Gilbert) : Type (U.S.N.M. No. 51590). 



a'. Apeisturus. Nasal valves each with anterior and posterior nasal cirrus ; 

 first dorsal inserted before mid length, smaller than second dorsal. 



g\ Paired fins larger, pectorals nearly or quite reach ventrals. 



h\ Subcaudal lower than anal indicus 



h^. Subcaudal deep as anal sibog'ae 



g". Paired fins smaller, pectorals not reaching ventrals; subcaudal 

 deep as anal microps 



Subgenus Parapristurus Fowler 



Nasal valves entire, without cirri. First dorsal inserted behind 

 midlength, smaller than second dorsal. 



pentanchus spongiceps (Gilbert) 

 FiGUKE 2 



Catulus spongicei}s Gilbert, Bull. U. S. Fish Comm., vol. 22 (1903), pt. 2, p. 579, 



1905 (type locality: Bird Island, Hawaii, in 572 to 1,46S meters). 

 ScyliorJiinus spongiceps Regan, Ann. Mag. Nat. Hist., ser. 8, vol. 1, p. 459, 1908 



(reference). — Weber, Siboga Exped., Fische, vol. 57, p. 595, 1913 (Banda 



Sea in 1,158 m.). 

 Pristiurus spongiceps Gasman, Mem. Mus. Comp. Zool., vol. 36, p. 94, 1913 (on 



Gilbert). 



