966 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Genus STYLOCHEIRON G. 0. Sars. 
In a few specimens belonging to Stylocheiron the elongated legs are preserved, and thus the writer 
was enabled to identify them. They are the following: 
5. Stylocheiron carinatum G. 0. Sars. 
Stylocheiron carinatum G. 0. Sars, Rep. Yoy. Challenger, 13, 137, pi. 26, 1885. Ortmann, Decap. & 
Schizop. Plankton Exped., p. 17, 1893. 
Only two specimens are fairly well preserved, but they unquestionably belong here. 
Station 3801, 100 fathoms, 28° 3V N., 141° 47 / W., between Erben Bank and Kaiwi Channel 2 
specimens. 
Distribution. — This species has been found by the Challenger in the North Pacific; in the Central 
Pacific (off Kandavu, Fidji); off Mindanao, Philippines, and in the South Atlantic. 'The Plankton 
Expedition obtained it in the Sargasso Sea and the South Equatorial Current; it has also been recorded 
from the Brazil Current (Ortmann). Vertical distribution, 0-200 fathoms. 
6. Stylocheiron suhmi G. O. Sars. 
Stylocheiron suhmi and longicome G. O. Sars, Rep. Yoy. Challenger, 13, 142, 144, pi. 27, f. 1-5, 1885. 
Ortmann, Decap. & Schizop. Plankton Exped., 13, 1893. 
Stylocheiron suhmi Hansen, Bull. Mus. Ocean. Monaco, 30, 1905, 30. 
Stylocheiron longicome Holt & Tattersall, Rept. Fish. Ireland, 2 app., 4, 1905, 109, 140. 
Our specimen is much damaged; head and carapace are separated from the rest of the body, but 
the second true leg is preserved, and this agrees with that of S. longicome; also the eyes and other 
characters seem to indicate that we have to deal with this species. 
Station 3803, 50 fathoms, 25° 39 / 45" N., 147° 41 / 45" W., 1 specimen. 
Distribution. — This species was found by the Challenger south of the Cape of Good Hope and in 
the Pacific (New Guinea and Philippines), and Sars mentions it from Messina, Mediterranean Sea. 
The Plankton Expedition and the Princess Alice found it widely distributed in the Atlantic: Gulf 
Stream, Sargasso Sea, North and South Equatorial, and Guinea Currents. 
7. Stylocheiron abbreviatum G. O. Sars. 
Stylocheiron abbreviatum G. O. Sars, Rep. Voy. Challenger, 13, p. 147, pi. 27, f. 11-13, 1885. Ortmann, 
Decap. & Schizop. Plankton Exped. , p. 17, 1893; Bull. Mus. Harvard, 25, 1894, p. 104. 
Hansen, Bull. Mus. Ocean. Monaco, 30, 1905, 31. 
Stylocheiron chelifer Chun, Bibl. Zool., 7, 1896, 167, pi. 11; Holt & Tattersall, op. cit. , p. 110, 141. 
The present specimen is about 14 mm. long, and thus much larger than that of Sars (8 mm.); but 
it agrees well with the latter except that the second pair of true legs is comparatively longer and 
stronger, which, however, is easily accounted for by the age. 
Station 3805, 50 fathoms, 24° 08' 15 // N., 150° 51' W., 1 specimen. 
Distribution. — The Challenger took this species in the Pacific, north of the Hawaiian Islands, in the 
tropical and northern Atlantic. The Plankton Expedition found it widely distributed in the tropical 
and subtropical Atlantic to a depth of 1,500 meters. The Albatross had taken it previously off Galera 
Point in the Panama region of the Eastern Pacific. 
Genus NEMAT0BRACHI0N Caiman. 
8. N ematobr achion boopis (Caiman). 
Nematodactylus boopis Caiman, Trans. Roy. Irish Acad., 31, 1896, 17, pi. 2, f. 19-28. Hansen, Bull. 
Mus. Ocean. Monaco, 30, 1905, 29. 
Nematobr achion boopis Caiman, Rept. Fish. Ireland, 2 app., 4, 1905, 153, pi. 26. 
The present specimen is in poor condition (broken in two), but the legs are well preserved. 
These, as well as the shape of the carapace and the eyes, of antennae and antennulse, agree well with 
Caiman’s description. Especially the very characteristic, greatly elongated, second true leg is abso- 
