34 ON NEW OR INSUFFICIENTLY DESCRIBED FISHES 



DACTYLOPTERTDJE. 

 Ebisintjs procne sp. nov. 



D. i, i, V, i, 8 ; A. 6 : C. 3-7-3 ; P. 33 or 34 ; 

 V. 5 ; Sc. 49-28. Depth of body 4-85, width of body 

 4*35, length of head 3*8, of nuchal spine 2-65, of pectoral 

 fin ri5 in length of body. Width of head 1*85, length of 

 snout 2-75, diameter of eye 3-2, width of inter orbit 2, length 

 of maxillary 2-5, of preopercular spine 2 (ad.) to 1*35 (jur.)* 

 longest dorsal spine 1-4, middle caudal rays 1-3, length of 

 peduncle 1*25, of ventral fin 1-15 in length of head. 



Depth of head 1*3 in its width. Snout sub vertical 

 and convex, one sixth longer than the eye- diameter ; depth 

 of interorbital region 4-85 in its width ; maxillary extending 

 to below the anterior bordei of the pupil. Preopercular 

 spine reaching to above the base of the ventrals in the 

 adult, considerably further in the young. Humeral pro- 

 cesses produced to or nearly to the level of the spinous 

 dorsal, the distance between their apices 1*3 in the depth 

 of the intervening notch, which is narrowly rounded an- 

 teriorly. Lower edge of posterior part of body with three 

 of the keeled scales enlarged and mobile, the first below 

 the last dorsal rays, the others on the peduncle. Lateral 

 line conspicuous, extending directlyt backw^ard to below 

 the middle of the spinous dorsal, thence sweeping down- 

 ward in a gentle curve to below the origin of the soft dorsal, 

 and finally continuing to the base of the caudal below the 

 8th series of scaly keels. 



Nuchal spine extending to a little behind the spinous 

 dorsal ; 2nd detached spine inserted midway between 

 the nuchal spine and the 3rd ray of the spinous dorsal, 

 to the base of which it reaches when depressed ; its length 

 is 3-9 in the nuchal spine and 1'4 in the second and longest 

 dorsal spine, which is subequal to the height of the soft 

 dorsal. Anal originating below the 3rd ray of the soft 

 dorsal and much nearer to the root of the caudal than to 

 the gill-opening. Caudal fin subtruncate with the outer 

 rays produced. Width of peduncle immediately behind 

 the dorsal fin 1-4 in its length. Pectoral fin reaching to 

 the middle of the caudal, the tips of all the rays filamentous. 



* In an example 100 millim. long. 



t According to the figure given by Jordan and Kichardson (Proc. U.S. 

 Nat. Mus., xxxiii, 1908, p. 665) the lateral line is strongly curved upward 

 behind the humeral process in Ebisiniis macr acanthus. 



