314 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
that it is really three segments fused) and second, the perfectly smooth 
outer margin of the enlarged segments, which in most species is quite 
irregular. The second antennae, mouth parts, and first four pairs of 
legs are similar to those of the female. The right fifth leg is very much 
longer than the left, the hand of the chela is subtriangular, the apex 
is articulated with the second segment, the thumb and finger at the 
free corners. The thumb is longer, slender, and pointed; the finger is 
shorter, stouter, and blunt, with two inner setae. The second segment 
of the left leg has a long process at the outer distal corner and the end 
segment is tipped with two small spines. Total length 2.25 mm. 
Metasome 1.85 mm. long, 0.90 mm. wide. 
Neotypes—U.S.N.M. No. 74144. These types are labeled by Dr. 
Wilson as from Endeavour Strait, north of Queensland, Australia, but 
without other data. 
Remarks.—This species is so closely related to regalis that it is diffi- 
cult to separate the two. However, if the two are placed together they 
can be easily distinguished by their respective size, regalis being twice 
as large as sfrenwa. Though so similar there are enough differences 
in the fifth legs of both sexes as well as in the urosomes to separate 
the species. 
PONTELLOPSIS VILLOSA Brady 
PLATE 30, Fiaure 462 
Pontellopsis villosa Brapy, Voyage of H. M. S. Challenger, Zool., vol. 8, pt. 28, 
Copepoda, p. 86, pl. 34, figs. 10-13 ; pl. 35, figs. 14-20, 1883. 
Stations 31; 3932; 4952; 5228. This species was the type of Brady’s 
new genus Pontellopsis from the Challenger plankton, and since the 
genus has proved to be a valid one it seems strange that Brady did not 
place Dana’s species strenwa in it instead of in Pontella. It appears 
in all the subsequent, plankton lists. T. Scott (1894, p. 87) also found 
it in 21 tow nettings from the Gulf of Guinea, all but one taken at the 
surface and Giesbrecht (1892, p. 486) reported the species from the 
Gulf of Naples. The Albatross specimens were males taken in surface 
tows in the tropical Pacific. 
Genus PONTOPTILUS Sars 1905 
PONTOPTILUS MUTICUS Sars 
Pontoptilus muticus Sars, Bull. Mus. Océanogr. Monaco, No. 40, p. 19, 1905b; 
Rés. camp. sci. Albert de Monaco, No. 69, p. 312, pl. 110, 1925. 
Station 4683. A single female identified by Sars from this station 
between Callao, Peru, and Easter Island is the first record from the 
Pacific Ocean. The species was established by Sars upon another 
single female from the Canary Islands. Together with a third female 
found by Farran (1908, p. 81) off the west coast of Ireland, these are 
all the specimens that have thus far been found. 
