II. BEDOTIA 19 



kk'^. First dorsal fin reduced in size and composed of one to six spines, 

 occasionally altogether wanting; scales 75 to 80. Andean streams 

 {and shores?) of the Pacific slope of Peru and Chile. 



39. Basilichthys. 



Annotated List of the Genera and Species of Atherine Fishes 



On the following pages we list the genera of the Atherinid.e, with 

 notes and descriptions, in the order in which we have differentiated them 

 in the foregoing key. Under the head of each genus we list all of the 

 species which we recognize, with synonomy, and frequently with notes 

 and descriptions. The species examined by us in the preparation of this 

 report are marked •^'■. The accompanying plates are nearly all electro- 

 types from those accompanying the original description. For most of 

 these we are indebted to the kindly aid of Dr. Marcus Benjamin, editor of 

 the Proceedings of the United States National Museum. The electrotypes 

 of the species described by Dr. Seth E. Meek are loaned by the Field 

 Museum. i . .'ilM 

 Subfamily NANNATHERININ^ ' "'^ 



I. NANNATHERINA Regan, 1906. 



Nannatherina Regan, Ann. Mag. Nat. Hist. (7), 18, 451, 1906. 



Orthotype. — Nannatherina balstoni Regan. 

 Range. — Western Australia, in fresh water. 



The characters and relationships of this peculiarly perch-like type 

 have already been discussed (pp. 8, 9). According' to Regan, "the 

 vertebral column and pectoral arch are as in typical Atherinid^ ; the 

 pelvic bones are quite remote from the clavicles, to which they are con- 

 nected by ligament." 



The possibility of real relationship of Nannatherina with Nanno- 

 PERCA, another fresh-water fish of Australia, is suggested by the external 

 features of the two types. Nannoperca is currently regarded as related 

 to KuHLiA. It is possible that Nannatherina should be regarded as the 

 type of a distinct family. 



1. Nannatherina balstoni Regan, 1906. 



Nannatherina balstoni Regan, Ann. Mag. Nat. Hist., (7), 18, 451, 1906. 



Type-locality. — King River, Western Australia. 

 Range. — 'King River, Western Australia. 



Subfamily BEDOTIIN^. 



II. BEDOTIA Regan, 1903. 

 Bedotia Regan, Rev. Suisse ZooL, 11, 416, 1903. 



Orthotype. — Bedotia madagascarensis Regan. 

 Range. — Fresh waters of Madagascar. 



A highly aberrant genus, with three known species. 



