570 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Barnard describes Spratelloides aestuarius with depth of body equal 

 to length of head, 4 to 4% in length, A. 18 to 21 and beginning 

 under end of dorsal and ventral wholly in front of dorsal. 



A.N.S.P., eight examples. Blue lagoon, in enclosed water. August 2, 1933. 

 H. W. Bell-Marley. Length, 44-51 mm. 



Genus DUSSUMIERIA Valenciennes 



Dussumieria Valenciennes, Hist. Nat. Poiss., vol. 20, p. 467, 1847. (Type, Dus- 

 sumierin, acuta Valenciennes, monotypic.) 



Body elongate, more or less compressed. Snout pointed. Eyes 

 with very thin, wide, adipose lids. Jaws equal. Mouth bordered 

 by very small premaxillary and maxillary, latter with 2 supplemental 

 bones. Small teeth in jaws, in villiform patches on palatines, ptery- 

 goids and tongue, none on vomer. Gill membranes separate and free 

 from isthmus. Pseudobranchiae large. Branchiostegals 15 to 20, 

 very fine. Scales moderate, thin, very deciduous. Dorsal opposite 

 ventrals, origin of fin nearer caudal than end of snout. Anal small, 

 far behind dorsal. 



Chabanaud has described and figured a fish which he refers to the 

 present genus, though its entirely different appearance suggests the 

 Atherinidae. This is seen in the elevated pectoral, the opposed pos- 

 terior second dorsal and anal, and advanced ventral. The first dorsal 

 is unique in that it is well premedian in the body, over the ventral, 

 and composed of a spine and 5 branched rays. It may be found 

 as follows : 



DUSSUMIERIA PRODUCTISSIMA Chabanaud 



Dussumieria productissima Chabanaud, Bull. Inst. Oe^anogr. Monaco, No. 627, 

 p. 4, fig. 3 (tongue), p. 4 (gill raker), pp. 5-6 (scales), 1933 (type 

 locality: Gulf of Suez; Grand Lac Amer, Isthmus of Suez; Lac Timsah, 

 Isthmus of Suez) ; Bull. Soc. Zool. France, vol. 58, p. 289, 1933 (above 

 materials). — Gruvel and Chabanaxjd, M^m. Inst. Egypte, vol. 35, p. 3, fig. 3, 

 1937 (types). 



Gruvel and Chabanaud say it is more elongate than Dussumieria 

 hasseltii Bleeker, has more numerous gill rakers (29 to 34 in place of 

 19 to 24) , also more numerous anal rays (17 to 19 in place of 16) . 



ANALYSIS OF SPECIES 



o\ Lateral scales 40 to 42 acuta 



a^ Lateral scales 52 to 56 hasseltii 



DUSSUMIERIA ACUTA Valenciennes 



Dussumieria acuta Valenciennes, Hist. Nat. Poiss., vol. 20, p. 467, pi. 606, 1847 

 (type locality: Bombay, Coromandel). — Cantor, Journ. Asiatic Soc. Bengal, 

 vol. 18, p. 1268, 1849 (Pinang, Malay Peninsula, Singapore) . — Jerdon, Madras 

 Journ. Lit. Sci., vol. 17, p. 145, 1851. — Bleeker, Verb. Batav. Genootsch. (Ben- 

 gal), vol. 25, p. 73, 1853 (reference). — Kner, Reise Novara, Fische, p. 330, 

 1865 (Java and Manila ) .—Day, Fishes of Malabar, p. 226, 1865.— Gijnther, 



