CENTROLOPHIDAE 



117 



Palinurichthys griseolineatus, sp.n. 



St. WS 97. iS. iv. 27. 49 00' 30" S, 6i° 58' W. Commercial otter trawl, 146-145 m.: 1 specimen, 

 248 mm. Holotype. 



St. WS 108. 25. iv. 27. 48 30' 45" S, 63 33' 45" W. Commercial otter trawl, 1 1 8-1 20 m.: 



1 specimen, 245 mm. 



Depth of body z\ in the length, length of head 3! to nearly 4. Snout a little shorter 

 than eye, diameter of which is about 35 in length of head; interorbital width z\ to 3. 

 Maxillary more or less exposed, extending to below anterior part of eye. Operculum, 

 suboperculum and interoperculum scaled; margin of praeoperculum denticulated. 

 Gill-rakers nearly as long as the gill-filaments, about 15 on lower part of anterior arch. 

 Scales small; lateral line not becoming straight until it reaches the caudal peduncle. 

 Dorsal VII 32-33 ; fourth and seventh spines apparently longest. Anal III 21. Pectoral 



Fig. 64. Palinurichthys griseolineatus. Holotype. x \. 



nearly as long as head; pelvics inserted behind pectorals, length about \\ in that of 

 head. Brownish above, silvery yellow below; sides of body with irregular greyish 

 longitudinal stripes ; dorsal, anal, pelvics, and the distal parts of the caudal and pectorals 

 blackish. 



Hab. Off the Atlantic coast of Patagonia. 



Apparently related to P. perciformis (Mitchill) and P. porosus (Richardson), differing 

 from both in the greater number of dorsal and anal rays, deeper body, smaller head, 

 longer pectorals, etc. 



The two species described above are somewhat tentatively placed in the genus 

 Palinurichthys, Bleeker [= Pammelas, Gunther], as the genera of Centrolophidae are 

 badly in need of further revision. That the genus Leirus as defined by Regan (1902, 

 Ann. Mag. Nat. Hist., Ser. 7, x, p. 195) is capable of subdivision cannot be denied, 

 but without an extensive and well-preserved series of specimens of the different species 

 it is almost impossible to define the limits of the various groups. The changes undergone 

 by many of the species of this family during growth are marked, and the material in 



