49H .sEAr.E. 



This .species is related to A. pmguis Lacepede, which is no doubt the 

 A. lacunosa Porster from which it differs in the fewer scales, location of 

 fins, size of eye and absence of teeth on the palatines. 



It somewhat resembles .1. morrisi Jordan & Starks but their fish has 

 14 anal rays and scales 4.") and tlie origin of the anal is in advance of 

 the soft dorsal. 



A . tsuruga Jordan & Snyder is a long panetela-sliaped fish whose 

 chief resemblance to the present species consists in its dusky spot on the 

 pectorals; in other respects it is quite different. .1. lacunosa Bleeker has 

 no black spot on pectorals. A. insila Jordan &: Seale has a large number 

 of scales and is a quite differently shaped fisli. I have compared this 

 tvfie with all of the above species now in the Stanford University museum 

 and find it quite distinct. 



Atherina balabacensis Seale, sp. nov. Plate III. fig. 2. (Gunac.) 



Head 3.75; depth 4.10; dorsal A^-I, 10; anal I, 12; scales 36; six 

 in vertical series; eye 2.10 in head; snout 5; interorbital space 2.50, 

 being less than eye; maxillary 3.50; mandible 2; pectorals 1.10; ventrals 

 1.80; depth of caudal peduncle 3. 



Body elongate, moderately compressed, rather heavy and deep, its 

 greatest depth at origin of spinous dorsal; the back is slightly but evenly 

 curved; caudal peduncle compressed, its least depth 1.50 in its length, 

 measured from end of caudal vertebra to posterior axil of anal. 



Head rather heavy and deep, its depth being considerably greater than 

 its greatest width, the lower profile of head is an even rounded curve 

 while the upper profile from the occiput is almost straight. The lower 

 jaw is the longest, forming the anterior point of head. The interorbital 

 space is almost flat and has three short low ridges. AVidth of snout equal 

 to its depth at its median point. Top of snout flat except for the small 

 hump caused by the processes of the maxillary. Mouth large, oblique, 

 the lower jaw protruding. Maxillary narrow, ending on a line with 

 anterior margin of orbit. Mandible ending under the anterior margin of 

 pupil. Preorbital with about four large pores or mucous cavities which 

 give this bone a sculptured appearance. Villiform teeth in jaws, vomer, 

 pterygoids, and back of tongue ; no teeth on palatine. Gill openings large 

 and carried forward to below anterior margin of iris. Gill rakers long, 

 slender, and numerous. Pseudobranchia large, longer than the longest 

 gill filaments. Isthmus long and narrow, a distinct groove on its lower 

 surface. 



Scales large and smooth, their margins not rough nor denticulate. 

 Head without scales, fins unsealed, but with a scaly sheath to the soft 

 dorsal and anal. Head is well furnished with numerous pores and i/aual*. 

 Fifteen scales in front of dorsal fin; nine scales between the margin of 

 the two dorsals, aiid six scales along the base of the soft dorsal. 



The origin of the spinous dorsal is midway between end of caudal 



