950 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
Types.—U.S.N.M. No. 74121; station 5415, latitude 10°07’50” N., 
longitude 123°57’ E., between Cebu and Bohol, Philippine Islands. 
Remarks.—The principal characters of this species are the squat 
appearance of the metasome and the symmetry of the urosome in the 
female, the curved spines at the posterior corners of the fifth segment, 
and the elongated caudal rami in the male. 
LABIDOCERA WOLLASTONI (Lubbock) 
Pontelia wollastoni Luspgock, Ann. Mag. Nat. Hist., ser. 2, vol. 20, p. 406, pl. 11, 
figs. 9-11, 18, 1857. 
Stations 31; 38878; 4010; 4700. Identified by Sars from the first and 
last of these Albatross stations and from a single Monaco station, and 
present in the Carnegie list. The Albatross specimens were taken in 
surface tows around the Galapagos and Hawaiian Islands and in a 
vertical tow from 300 fathoms to the surface at station 4700. They 
constitute the first record from the Pacific Ocean. 
Genus LEPEOPHTHEIRUS Nordmann, 1832 
LEPEOPHTHEIRUS PARVIVENTRIS Wilson 
Lepeophtheirus parviventris WILson, Proc. U. S. Nat. Mus., vol. 28, p. 635, pl. 28, 
figs. 275-284, 1905. 
Station 38226. A single female was captured at this station in Bering 
Sea while swimming freely at the surface. It is a parasitic form in- 
festing the Pacific cod and halibut. 
Genus LOPHOTHRIX Giesbrecht, 1895 
LOPHOTHRIX FRONTALIS Giesbrecht 
Lophothriz frontalis GiESBRECHT, Bull. Mus. Comp. Zool., vol. 25, No. 12, p. 254, 
pl. 2, figs. 1-5, 9-12, 1855. 
Stations 1; 9; 18; 26; 27; 2859; 4574; 4664; 4665; 4667; 4681; 4687; 
4700; 4703; 4705; 4715-4717; 4721; 4722; 4740; 5120; 5185; 5287; 
5451; Fiji Islands. Identified by Sars from 19 of these Albatross 
stations and from 40 Monaco stations; present also in the Siboga and 
Carnegie planktons. 
LOPHOTHRIX HUMILIFRONS Sars 
PLATE 25, FIGURES 370-373 
Lophothrig humilifrons Sars, Bull. Mus. Océanogr. Monaco, No. 26, p. 22, 1905a; 
Rés. camp. sci. Albert de Monaco, No. 69, p. 166, pl. 46, figs. 15-22, 1925. 
Station 5451. Five males were obtained at this station off the east 
coast of Luzén in the Philippines. They are different from any males 
already described in the genus and are referred to the above species 
whose males have hitherto remained unknown. 
