SCHIZOPODS OF THE HAWAIIAN ISLANDS. 
965 
Euphausia bidentata Stebbing, Pr. Zool. Soc. London, 1900, 544. 
Euphausia pellucida S. lo Bianco, Pelag. Tiefseefisch. Maja, 37, pi. 16, fig. 50, 1904. 
I follow Stebbing (1900) in using the name of E. bidentata Sars for this species, without being fully 
convinced that E. pellucida of Dana is a different form. I readily concede, however, that E. pellucida 
(as well as E. muelleri Claus) is at least doubtful, which is sufficient reason for discarding this name. 
Stations: 3797, surface, 31° 55 / N., 135° W., East Pacific, 4 specimens; 3797, 25 feet below surface, 
31° 55 / N., 135° W., East Pacific, 2 specimens; 3829, surface, south coast of Molokai Island, 1 speci- 
men; 3867, surface, Pailolo Channel, 16 specimens; 3901, surface, Pailolo Channel, 24 specimens; 3912, 
surface, south coast of Oahu Island, 1 specimen; 3926, surface, 21° 20 / N., 158° 43 / W., southwest of 
Oahu, 5 specimens; 3929, surface, 23° 19' N., 166° 54 / W., between Honolulu and Laysan, 2 specimens; 
3980, surface, 21° 23 / N., 158° 19 / W., between Honolulu and Kauai, 1 specimen; 4009, surface, 21° 
50 / 30" N., 159° 15' W., southeast of Kauai, numerous specimens; 4011, surface, 21° 20 / N., 158° 21 / 
W., between Kauai and Oahu, 1 specimen; 4145, surface, 22° 27' 30" N., 160° 40' W., between Kauai 
and Modu Manu, 9 specimens. 
Distribution. — Almost cosmopolitan; reported from the Arctic and Northern Atlantic (as far north 
as 60° N. ), subtropical and tropical Atlantic, South Atlantic, South and Central Pacific, Indian Ocean. 
(See Ortmann, 1893. ) 
In addition to the localities listed by Ortmann in 1893, we have to record numerous localities off 
the west coast of America: Panama, Galapagos, off California, and between California and the Hawaiian 
Islands (Ortmann, 1894). Vertical distribution, surface to about 900 meters. Caullery (1896) reports 
this species from 1,710 meters in the Gulf of Biscay. Lo Bianco (1904) says that at Capri the young 
are found near the surface, while the adult forms prefer depths of over 500 meters. 
4. Euphausia pseudogibba Ortmann. 
Euphausia pseudogibba Ortmann, Decap. & Schizop. Plankton Exped., 12, pi. 1, fig. 6, 1893. Steb- 
bing, Pr. Zool. Soc., London, 1900, 545. Hansen, Bull. Mus. Ocean. Monaco, 30, 1905, 11. 
The specimens agree completely with this form._ The preanal spine has been described as 1 to 4 
pointed (rarely 1-pointed). Among 9 individuals of the present material (station 3867), 4 have it 
1-pointed and 4 have it 2-pointed (in the ninth it is damaged). In the specimen from station 3799, 
which is larger than any of the others, it is 3-pointed. 
Stations: 3799, 100 fathoms, 29° 22' N., 139° 3P W., East Pacific, 1 specimen; 3867, surface, 
Pailolo Channel, 10 specimens. 
Distribution. — This is the first record of this species outside of the Atlantic Ocean. On account of 
the similarity to E. gibboides, this is important. E. pseudogibba has been found hitherto only by the 
Plankton Expedition and the Princess Alice in the Atlantic: Sargasso Sea, North Equatorial, Guinea, 
and South Equatorial currents, between surface and 650 meters, but not at the surface. 
Genus NEMATOSCELIS. 
Material belonging to this genus and to the one following has been obtained at various stations 
situated between California and the Hawaiian Islands, namely, 3799, 100 fathoms; 3801, 100 fathoms; 
3802, 150 fathoms; 3803, 50 fathoms; 3805, 50 fathoms; 3807, 50 fathoms. 
This material generally is in a very poor condition. In the first line the legs are missing, and, 
further, the eyes are largely destroyed ; both organs are absolutely necessary for the proper identification 
of genus and species. The latter fact, the destruction of the eyes, is very remarkable, and has been 
noticed before in these genera by the writer. In my opinion, it is due to the hauling up of the 
specimens from a certain depth, as indicated by the present records, 50 to 150 fathoms. Apparently 
the change of pressure causes this deformation of the eyes, which is best described as a bursting. 
Although the specimens have been largely rendered useless for systematic purposes, the condition in 
which they are tends to confirm their actual existence at the recorded depths. 
