472 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 48. 



of the head, as in Aiheresthes and Reinhardtius. The dorsal begins 

 over the posterior part of the eye, and the teeth are rather small and 

 close together. The paratypes of Cleisthenes pinetorum show these 

 same characters, differing from Hippoglossoides in the same manner. 

 Cleisthenes was described as closely allied to Hippoglossoides, dif- 

 fering in having cycloid scales everywhere in the young, and an in- 

 creased number of gill-rakers. The adult has a single series of 

 ctenoid scales along the anterior base of dorsal and anal, a few on the 

 snout, on ridge behind the interorbital space, and on opercle. The 

 dorsal begins on the orbital rim slightly on blind side. Eyes and color 

 on right side. Protopsetta Jierzensteini differs from Hippoglossoides 

 in the same manner. The two species are, in fact, very closely 

 related. 



CLEISTHENES PINETORUM Jordan and Starks. 



Cleisthenes pinetorum Jordan and Starks, Bull. U. S. Fish Comn., 22, 1902 (1904), 

 p. 622, with plate. Matsushima Bay. 



A single specimen from Albatross station 5074, off Matsushima 

 Bay, near the type-locality. 



Dorsal, 76; anal, 57; pores, 76; gill-rakers, 8 + 24; length, 171 mm.; 

 head, thirty-hundredths of total length to base of caudal; depth of 

 body, 39; diameter of upper eye, 7; length of snout from upper orbit, 

 6; length of maxillary of eyed side, 10; of blind side, 10.5; pectoral of 

 eyed side, 15; height of dorsal, 14; height of anal, 13 ; length of caudal, 

 23; length of ventral of eyed side, 9. 



This species differs from G. Jierzensteini (Schmidt) chiefly in having 

 the scales of the body and head more strongly ctenoid or spinous, 

 and in having a larger number of gill-rakers. The variation of both 

 species as regards the gill-rakers is wide, as the following tables show. 



Paratypes of G. pinetorum. 



Gill-rakers 



20 

 1 



21 

 3 



22 

 3 



23 

 2 



24 

 4 



25 

 3 



26 



27 

 1 



Ppftnimfins. .. ,, 





1 specimen of C. pinetorum from Albatross station 5047 



C. Jierzensteini collected by the " Albatross. " 



24 





16 



17 



18 



19 



20 



21 



22 



23 





1 



3 



6 



8 



6 



1 







1 



Type of C. herzensteini 16 



2 specimens of C. herzensteini from Port Arthur 15, 18 



Summary. 



Gill-rakers 



15 



16 



17 



18 



19 



20 

 1 

 6 



21 

 3 

 1 



22 

 3 



23 

 2 

 1 



24 



4 



25 

 3 



26 



27 

 1 







1 



2 



3 



7 



8 













