FISHES FROM NORTHEASTERN PACIFIC — CHAPMAN 509 



MACROPINNA, new genus 



Genotype. — Macropinna microstoma, new species. 

 The characters of the genus are those of the species. 



MACKOPINNA MICROSTOMA, new qtecies 



Figure 59 



Types. — The holotype, a specimen 39.5 mm long from station 62 IC 

 collected March 28, 1932, latitude 53°50' N., longitude 134°20' W. 

 U. S. N. M. no. 108143, and 27 paratypes from the following stations 

 7B; 25C; 122A; 132A; 132B; 192; 207A; 245C; 260C; 268B; 293B 

 334C; 339A; 396A; 407C; 410A; 412A; 434A; 491D.T.; 546D.T. 

 593B; 621C; 626B; 627B; 817A; 953C; 1017C; 1113A. 



Those paratypes in the United States National Museum bear num- 

 bers 108177-108185. 



Description. — Twenty-eight specimens of this species are in the 

 IFC collection, ranging in length without caudal from 6.5 to 39.5 mm. 

 The specimen from station 62 IC is taken as the holotype, with the 

 other 27 as paratypes. Its counts and bodily proportions follow: 

 Dorsal ray 11 ; anal rays 14; caudal rays 40; pectoral rays 17; ventral 

 rays 10; number of scales in the lateral line 24. Length without 

 caudal 39.5 nam. Proportions of the length without caudal: Length of 

 the head 2.0; snout to dorsal origin 1.4; snout to adipose 1.1; snout 

 to insertion of ventrals 1.3; snout to origin of anal 1.4; greatest 

 depth 2.7. Proportions of the length of the head: Diameter of eye 

 2.8; length of upper jaw 5.6; least depth of caudal peduncle 3.9; 

 length of caudal peduncle 3.9. 



A second adult specimen from IFC station 407C had the following 

 counts and proportions: Dorsal rays 11; anal rays 14; caudal rays 10; 

 pectoral rays 18; ventral rays 10; scales along the lateral line 26. 

 Length without caudal 27.5 mm. Proportions of the length without 

 caudal: Length of the head 2,1; snout to dorsal origin 1.4; snout to 

 adipose 1.1; snout to insertion of ventrals 1.8; snout to origin of anal 

 1.4; greatest depth 3.2. Proportions of the length of the head: 

 Diameter of eye 2.6; length of the upper jaw 4.3; least depth of 

 caudal peduncle 3.7; length of caudal peduncle 3.7. 



The body is deep and short, quite unlike the slender form of the 

 smaller specimens. It appears to have been completely covered by 

 large cycloid scales, although only those along the lateral line remain 

 on the holotype. The snout is broad, flat, and shovellike. It is 

 U-shaped in dorsal aspect. The eyes are not round, but are cylin- 

 drical, with the pupils pointing directly upward so that the cornea 

 projects mto the dorsal outline. They are completely surrounded 

 laterally by a densely pigmented area. Dorsoanteriorly this light 



130052—39 2 



