170 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
all the same size and length, one terminal and one on either side. The 
appendicular seta on the right leg is about twice as long as the one 
on the left leg and both are plumose. The end segment is a plump cone 
tipped with a curved spine, and the joint between the two segments is 
considerably wrinkled. Total length 4 mm. Male unknown. 
Type.—U.S.N.M. No. 70761; station 4740, latitude 9°02’S., longi- 
tude 123°20’W., off Paumotu Islands. 
Remarks.—The hooked lamina projecting from the forehead, the 
broadly rounded posterior corners of the metasome, and the three 
plumose setae on the second segments of the fifth legs are the distin- 
guishing characters of this new species. No other species in the genus 
exhibits any one of these characters and hence the validity of the 
species is trebly assured. 
Genus AUGAPTILUS Giesbrecht, 1889 
AUGAPTILUS ANCEPS Farran 
Augaptilus anceps FARRAN, Fisheries Ireland, Sci. Invest. for 1906, pt. 2, p. 79, 
pl. 8, figs. 15-19, 1908. 
Stations 4685 ; 4719; 4721; 5120. Established by Farran upon two 
or three female specimens from west of Ireland and afterward fully 
described and figured by Sars in his Monaco report. The specimens 
from the first three Albatross stations were identified by Sars. They 
constitute the first record from the Pacific. 
AUGAPTILUS GLACIALIS Sars 
Augaptilus glacialis SArs, Norwegian North Polar Exped., vol. 5, Crustacea, 
p. 88, pls. 26, 27, 1900. 
Station H. 2727. Originally described by Sars in his account of the 
copepods of the Norwegian North Polar Expedition and afterward 
included in the Monaco plankton, but not found in the other lists. 
Previously reported from the North Atlantic and Arctic Oceans. 
The above Aléatross station is the first record from the Pacific Ocean. 
In the collections of the National Museum there are also seven females 
taken by C. S. McClain, of the U. S. S. Alert in Baffin Bay, lat. 
73°17’ N., long. 58°40’ W., June 24, 1884. [The material from sta- 
tion H. 2727 was not found among the material returned to the Mu- 
seum by Dr. Wilson.—W. L. S.] 
AUGAPTILUS LONGICAUDATUS (Claus) 
Hemicalanus longicaudatus CLaus, Die freilebenden Copepoden, p. 179, pl. 29, fig. 
3, 1863. 
Stations 7; 2219; 4638; 4669; 4671; 4687; 4695; 4700; 4703; 4705; 
4707; 4715; 4716; 4721; 4722; 4730; 5246. Many specimens were ob- 
