FISHES FROM NORTHEASTERN PACIFIC — CHAPMAN 527 



is never more than slightly excentric. M. oculeum is separated from 

 M. arciicum by its eyes being normal and the lens not being markedly 

 excentric; by having the dorsal rays 11 to 13 instead of 9 as in the 

 latter (according to Goode and Bean, 1895) ; and by having 22 to 25 

 anal rays instead of 17 (op. cit.). This species differs from M. rissoi 

 by having the eye 2 or more in the head instead of 2 or less; by having 

 the PLO on a level with the lower PVO instead of above the dorsal 

 one as shown by Goode and Bean, 1895, for the latter; and by having 

 15 to 16 AG instead of 11 (op. cit.). From M. anderssoni, M. oculeum 

 can be told by the longer head (2.6 to 3.1 in M. oculeum, ?,){ in M. 

 anderssoni); and by the two anterior AG not being elevated as in 

 M. anderssoni. M. oculeum is distinguished from M. antarcticum as 

 described by Goode and Bean, 1895 (under the name of Myctophum 

 colletti), by having 11 or 12 dorsal rays instead of 15; by having more 

 than 21 anal rays, and 15 instead of 13 pectoral rays. M. subasperum 

 has the origin of the anal at the vertical from the end of the base of 

 the dorsal fin and has ctenoid scales, whereas M. oculeum has the anal 

 originating under the posterior third of the dorsal fin and has cycloid 

 scales. Furthermore, M. parallelum, M. arcticum, M. rissoi, and 

 M. anderssoni have never been taken in the Pacific, according to 

 Parr (1928). M. antarcticum is found only in Antarctic waters. 

 Although M. subasperum has been taken in the Pacific, it has never 

 been taken in the northeastern section of that ocean. M. oculeum 

 represents the first record of a species of this interesting group from 

 the Pacific coast of North America. 



The present range of M. oculeum extends from off the coast of 

 Washington through British Columbia waters and the Gulf of Alaska 

 to off Kodiak Island. It has been taken only in waters outside the 

 100-fathom line. 



Named in reference to the large and peculiar eyes. 



Genus LAMPANYCTUS Bonaparte, 1840 



LAMPANYCTUS MICROPUNCTATUS, new species 



Figure 66 



Types. — Holotype, a specimen 77 mm in length without caudal, 

 from station 622C, taken March 28, 1932, latitude 53°40' N., longi- 

 tude 134°15' N., U.S.N.M. no. 108142, and 19 paratypes from the 

 foUowmg stations: 167A; 183C; 189B; 319A; 338B; 621C; 633C; 699C; 

 752A; 765B; 9760; 1014B; 1020B; lllOC; 1118C; 1120C; 1143A. 



Those paratypes m the United States National Museum bear the 

 numbers 108161-108167. 



One of the two specimens from station 338B was too desiccated to 

 use in the measurements. 



