COPEPODS GATHERED BY ALBATROSS—WILSON 239 
HETEROPTILUS ATTENUATUS (Sars) 
Pontoptilus attenuatus Sars, Bull. Mus. Océanogr. Monaco, No. 40, p. 20, 1905b. 
Heteroptilus attenuatus Sars, Rés. camp. sci. Albert de Monaco, No. 69, p. 324, 
pl. 116, 1925. 
Stations 4687; 4700; 4730. Identified by Sars from these Albatross 
stations and from 7 Monaco stations but not appearing in any of the 
plankton lists. In fact, this is the first record since the original dis- 
covery and also the first from the Pacific Ocean, since the original 
specimens came from the temperate Atlantic. 
Genus HETERORHABDUS Giesbrecht, 1898 
HETERORHABDUS ABYSSALIS (Giesbrecht) 
Heterochaeta abyssalis GIESBRECHT, Atti Accad. Lincei, Rome, ser. 4, vol. 5, 
sem. 1, p. 812, 1889; Fauna und Flora des Golfes von Neapel, monogr, 19, 
pp. 373, 388, pl. 19, fig. 4; pl. 20, figs. 29, 30, 1892. 
Station 5120. Established by Giesbrecht and placed at first in the 
genus Heterochaecta but afterward (1898, p. 116) transferred to his 
new genus above. In this last publication the position of the Atlantic 
station at which his types were taken was erroneously given as “Atlant. 
Ocean (14° noérdl. Br., 182° westl. L.) 4000 m. Tiefe.” For 14° north 
of the Equator the parallel of 132° west longitude is located far out 
in the Pacific Ocean more than halfway from Mexico to the Hawaiian 
Islands. The “4000 mi. Tiefe” is the depth at which his tow started, 
and, since the net was not closed but open all the way up, the speci- 
mens could have entered it at any depth above that level. Rose in 
his paper on Monaco material gives two stations at which this species 
was found, adding (p. 35), “Cette form est exclusivement bathy- 
pélagique,” yet at the first of the stations he mentioned the tow was 
a surface one. The Carnegie secured only three specimens in a verti- 
cal tow from 1,000 meters, while the single Albatross male from sta- 
tion 5120 was captured in a vertical tow from 350 fathoms to the 
surface. 
HETERORHABDUS CLAUSII (Giesbrecht) 
Puate 11, Ficure 120 
Heterochaeta clausii GiesBRECHT, Atti Accad. Lincei, Rome, ser. 4, vol. 5, sem. 
1, p. 812, 1889; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 372, 
382, pl. 20, figs, 2, 28, 37, 38, 1892. 
Stations 3712; 5185; 5495. One male and three females were ob- 
tained at these three stations at depths in the case of the last two 
ranging from 600 and 550 fathoms to the surface, and at the surface 
in the case of the first-named station. Three specimens were taken 
in the Siboga plankton in deep vertical tows but none in the other 
