936 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
(U.S.N.M. No. 73928) was taken in a vertical haul from 100 fathoms to 
the surface.—W. L. S.] 
HALOPTILUS CHIERCHIAE (Giesbrecht) 
Hemicalanus chierchiae GiesBreEcHT, Atti Accad. Lincei, Rome, ser. 4, vol. 5, sem. 
1, p 813, 1889; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 384, 
398, pl. 27, figs. 16, 17, 25; pl. 42, figs. 2, 27, 28, 1892. 
Stations 30; 4679; 4730. Identified by Sars from these 3 Albatross 
and from 8 Monaco stations but not present in the other lists. 
HALOPTILUS FONS Farran 
Haloptilus fons Farran, Fisheries Ireland, Sci. Invest. for 1906, pt. 2, p. 69, pl. 
7, figs. 11-15, 1908. 
Stations 4679; 4711; 5185. Farran’s original specimens came from 
the northern Atlantic west of Ireland, and it was found at one Monaco 
station in the same region. The present therefore is the first record 
from the Pacific. 
HALOPTILUS LONGICORNIS (Claus) 
Hemicalanus longicornis CLAUS, Die freilebenden Copepoden, p. 179, pl. 29, fig. 1, 
1863. 
Stations 2; 4-7; 15; 18; 26; 3799; 4583; 4587; 4589; 4638; 4648; 
4663; 4664; 4667; 4678; 4681; 4685; 4687; 4689; 4691; 4700; 4705; 
A707 471354715 3471734719; 4721; 4794 + 4730; 4734; 4740 ; 4926 : 5120; 
5185; 5190; 5240; 5246; 5320; 5437; Fiji Islands; Marshall Islands. 
As will be inferred from the station list, this is the most widely dis- 
tributed and abundant species of the genus and is found in all the 
plankton lists. 
HALOPTILUS MUCRONATUS (Claus) 
Hemicalanus mucronatus CLiaus, Die freilebenden Copepoden, p. 179, pl. 29, fig. 
2, 1863. 
Stations 27; 51384; 5319. This species appeared in the Monaco 
plankton, but in none of the other lists; the original specimens came 
from Messina and it has since been reported by Farran (1929, p. 268) 
from near New Zealand. The females found at the above Albatross 
stations carry the distribution far to the north of New Zealand into 
the tropical Pacific. 
HALOPTILUS ORNATUS (Giesbrecht) 
Hemicalanus ornatus GriesprecH?T, Fauna und Flora des Golfes von Neapel, 
monogr. 19, pp. 384, 399, pl. 27, figs. 1, 6, 7, 14, 15, 21, 24, 88; pl. 42, figs. 1, 
9, 17, 19, 22, 24, 1892. 
Stations 3799; 4605, 4634; 4637; 4638; 4655; 4659; 4663-4665; 
4667; 4671; 4679; 4681; 4700; 4703; 4707; 4721; 4926; 5120; 5185; 
