416 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Sillago is now restricted to the species having similar forms, scales 

 of moderate size, and nearly equal dorsal and anal fins; and it con- 

 sequently excludes some species that have been referred to it by 

 previous naturalists, Sillago punctatus being taken as the type of 

 one, and S. domina as that of another genus. Even in the genus as 

 now restricted, there are more considerable variations than are often 

 found in the same genus. While the ventral spine is slender and, as 

 usual, osseous in most species, it is in one thick and cartilaginous. 

 Again, some species have cycloid scales in the cheek and forehead, 

 while others have ctenoid. The preoperculum is almost entire in 

 some, while in others it is ciUated. As these differences do not, how- 

 ever, appear to be supported by others, they perhaps can scarcely be 

 regarded as generic, and the species so distinguished have been there- 

 fore retained in the same genus. (Gill.) 



ANALYSIS OF SPECIES 



a^. Sillago. Ventral spine normal, slender, bony. 

 6*. Anal with 1 or 2 spines, rays 19 to 23. 

 c^ Cheek and interocular scales cycloid. 



d*. Scales large, 60 to 55 along lateral line macrolepis. 



cP. Scales moderate, 70 to 75 along lateral line. 



e^. Scales 4 above lateral line; dorsal rays 20 or 21, anal 22 or 23. 



p. Eye 4 to 5 in head sihama. 



p. Eye 7 in head boutani. 



e*. Scales 5 or 6 above lateral line; dorsal rays 22, anal 19 or 21. 



g^. Body immaculate; dorsal spotted between rays bassensis. 



g^. Body spotted; first dorsal brownish above, dotted below; second 

 dorsal edged brown and with 2 longitudinal vittae; caudal 



with 3 transverse orange vittae maculata. 



c^. Cheek and interocular scales ctenoid. 



hK Scales 70 to 75 in lateral Hne; 3 rows above japonica. 



h^. Scales 82 to 86 in lateral line; 7 rows above. . parvisquamis. 

 6». Anal spines 2, rays 15 or 16 (rarely 18) ; first dorsal marbled blackish, second 



with 4 or 5 rows of oblong spots ciliata. 



o^. SiLLAGiNOPODYS, new subgenus. Ventral spine expanded as thick cartilag- 

 inous pad, joined with first ventral ray chondropus. 



Subgenus Sillago Cuvier 



Ventral spine normal, slender, bony. 



SILLAGO MACROLEPIS Bleeker 



Sillago macrolepis Bleeker, Nat. Tijds. Nederland. Indie, vol. 17, p. 166, 

 1858-1859 (type locality: Batavia; Bodeling, Bali). — Gill, Proc. Acad. Nat. 

 Sci. Philadelphia, 1861, p. 504 (compiled). — GtJNTHER, Cat. Fish. Brit. 

 Mus., vol. 2, p. 246, 1860 (compiled). — Bleeker, Verh. kon. Akad. Wet. 

 Amsterdam, vol. 14, No. 4, p. 72, 1874 (Java; Bali) ; Atlas Ichth. Ind. N^erland., 

 vol. 9, pi. (1) 389, fig. 1, 1877. — Meyer, Anal. Soc. Espan. Hist. Nat., 

 Madrid, vol. 14, p. 28, 1885 (Manado, Celebes).— Beaufort, Bijd. Dierk., 

 Amsterdam, vol. 19, p. 120, 1913 (Saonek, Waigiu; Ambon).— Fowler, 

 Mem. Bishop Mus., vol. 10, p. 235, 1928 (copied Gunther). 



Sillago maculalo (not Quoy and Gaimard) Seale and Bean, Proc. U. S. Nat. 

 Mus., vol. 33, p. 245, 1907 (Zamboanga). (Misprint.) 



