NATURAL SCIENCES OF PHILADELPHIA. 277 



den Malaijo-molukschen Archipel, p. 57, (in "Verhandelingen van bet 

 Bataviaasch Genootschap, del xxii. 

 Habitat. Seas of Batavia. 



POLISTONEMUS Gill. 

 Polynemus sp. Schlegel, Pel., Bleeker, Giinther. 



Dentes velutini maxillis ambabus et ossibus vomerino, palatinis et ptery- 

 goideis. Filamenta pectoralia cerciter 14. 



Body oblong, covered with small scales. Head oblong, with the snout pro- 

 jecting. Preoperculum serrated. Both jaws, the vomer, palatine and ptery- 

 goid bones provided with villiform teeth. First dorsal fin above the pectorals, 

 and furnished with seven or eight spines. Second dorsal and anal fins oblong, 

 opposite and nearly equal. Pectoral filaments numerous (about fourteen) 

 and much elongated. 



The present genus is closely allied to Trichidion, but is sufficiently distin- 

 guished by the greatly increased number of the pectoral filaments. The 

 scales are also considerably smaller than those of the Trichidions. 



POLISTONEMtTS MULTIFILIS Gill. 



Polynemus multifilis Schlegel, Fauna Japonica Pisces, p. 29, (note) ; ib. in 



Bijdragen tot de dierkunde, vol. i. p. 11, pi. vi. 

 Polynemus quatuordecimalis Pel., Bijdragen tot de dierkunde, vol. i. p. 10. 

 Polynemus polydactylus Bleeker, Natuurkundig Tijdschrift voor Neder- 



landsch Indie, Jahrgang iii. 1852, p. 417. 

 Habitat. River and coast of Borneo. 



GALEOIDES Giinther. 



Galeoides Giinther, Catalogue of the Acanthopterygian Fishes, &c, vol. ii. 



p. 332. 

 Polynemus Vahl, Bloch, Guv. et Val. 



Dentes velutini solum maxillis ambabus et ossibus palatinis. Filamenta 

 pectoralia cerciter 10 vel 11. 



Body oblong and compressed, covered with moderate or rather large scales. 

 Head oblong, with the snout high and obtuse. Eyes large. Preoperculum 

 serrated. Both jaws and the palatine bones armed with villiform teeth ; the 

 vomer and pterygoid bones are edentulous. First dorsal fin above pectorals, 

 sustained by about eight spines. Second dorsal and anal oblong, opposite 

 and nearly equal. Pectoral filaments in moderate number, generally about 

 nine or ten. 



Galeoides is distinguished by the absence of vomerine and pterygoid teeth, 

 and by the moderate size of the anal fin. Cuvier and Valenciennes have des-- 

 cribed two nominal species with those characteristics distinguished by the 

 presence of nine or ten pectoral filaments. Dr. Giinther has considered them 

 as identical, and as there is every probability that, where the number is so 

 increased as it is in this genus, there should be a slight variation in the num- 

 ber in the same species, we have concluded to adopt his views. We have only 

 seen the variety or species with nine filaments. 



Galeoides polydactylus Giinther. 



Polynemus polydactylus Vahl, in Skriv. Naturh. Selsk, vol. iv. p. 158. 

 Polynemus enneadactylus Cuv. et Val., Hist. Nat. des Poissons, torn. iii. 

 p. 392. 



. Polynemus decadactylus Bloch, Naturgeschichte der Ausliindischen Fische, 



taf. cccci. 

 Habitat. Western coast of Africa. 



1861.] 



