4 ON NEW OR INSUFFICIENTLY DESCRIBED FISHES 



from the ventral ; base of fin rather more than its vertical 

 height. Second dorsal small, inserted a little nearer to- 

 the origin of the 1st than to the tip of the tail. Anal 

 originating somewhat behind the 2nd dorsal, its length 

 1-6 in its distance from the caudal, which is equa.1 to that 

 from the ventral. Caudal long with the upper angle obtusely 

 pointed. Pectoral extending to below or beyond the end 

 of the 1st dorsal, the anterior and posterior borders convex: 

 with more or less rounded angles, the outer border emarginate. 

 Space between ventral and anal 1-75 in its distance from 

 the pectoral. 



Last gill- opening not much smaller than the 3rd^ 

 which is rather more than twice the eye-diameter. 



Above ashy or lead blue, below white ; tips of 2nd 

 dorsal, caudal, and pectorals darker. (Named for my^ 

 friend and colleague Adkins Robert Spencer, to whom I 

 am indebted for the specimen above described). 



Seas and estuaries of Eastern Australia, ascending 

 rivers to, and it is said even beyond, the furthest limit 

 of tidal influence, attaining a length of 2-5 mm. It is the 

 common " blue shark " of the Brisbane River. 



Described from a specimen 122 cm. long, the jaws of 

 which are in the A.F.A.Q. collection ; Cat. No. 290. 



ENGRAULID^. 



ANCHOVIA ^STUARIA sp. nOV. 



D. 13 or 14 ; A. 31 to 34 ; P. 12 ; V. 7 ; Sc. 40 or 41 — 

 9 or 10. Depth of body 3-55, length of head 3-75, of 

 maxillary 4, of anal fin 3-65, of caudal fin 3-75 in the length 

 of the body. Length of snout 4-4, diameter of eye 4, width 

 of interorbit 4, height of dorsal 1-4, depth of neduncle 2-4, 

 length of pectoral 1-25, of ventral 2-35 in the length of the 

 head. 



Upper surface of head linear and oblique, with a well- 

 marked front o- occipital ridge, the nape anteriorly with a 

 slight but distinct acclivity ; snout vertically rounded in 

 front and projecting beyond the lower jaw to a distance 

 equaling three fourths of the diameter of the eye ; inter- 

 orbital region strongly convex. Premaxillary, maxillary, 

 and mandible each wdth a series of minute teeth ; tongue 

 toothed. Maxillary extending slightly beyond the 

 mandibular articulation. Scales thin and easily detached ;; 

 ventral profile cultrate and rather strongly serrated. 



