SCHIZOPOD CRUSTACEANS IN THE U. 8S. NATIONAL 
MUSEUM: SCHIZOPODS FROM ALASKA.« 
By Arnovp E. Ortmann, 
Of the Carnegie Museum, Pittsburg, Pennsylvania, 
The present paper treats of a collection of Schizopods made dur- 
ing the investigations by the Alaska Salmon Commission in 1903. 
The collection, although small, contains a number of interesting 
forms. One of them represents a new genus the systematic position 
of which was ascertained with difficulty, and to which finally a posi- 
tion could be assigned only by altering the definition of one of the 
established subfamilies of the family Myside. 
The paper was originally to be published by the Bureau of Fish- 
erles, but was turned over to the U. S. National Museum, and it 
forms here the second instalment of a series of publications intended 
to describe the Schizopods of the national collections. 
Order MYSIDACEA Boas. 
Family LOPHOGASTRID 4 G. O. Sars. 
Genus GNATHOPHAUSIA Willemoes-Suhm. 
: GNATHOPHAUSIA GIGAS Willemoes-Suhm. 
G. O. Sars, Rep. Voy. Challenger, XIII, 1885, p. 33, pl. 111.—ORTMANN, Bull. 
U. S. Fish Comm. for 1903, 1905, p. 968; Proc. U. S. Nat. Mus., XXXI, 
1906, p. 36, pl. 11, figs. 1a, 10. 
Station No. 4267.1 male (?), jun.—Off Sitka Sound, 922 fathoms. 
(Color, dark crimson). 
Previous records.—Atlantic: West of Azores, 2,200 fathoms (Chal- 
lenger); between Cape Charles and Long Island, 852 fathoms 
(Albatross) ; Pacific: Hawaiian Islands, 856-767 fathoms; Bering 
Sea, 399 fathoms; between Unalaska and Kadiak, 695 fathoms; be- 
_ tween Sitka and Columbia River, 876 fathoms (Albatross). 
“Wor first paper see Proc. U. S. Nat. Mus., XXXI, 1906, pp. 23-54. 
PROCEEDINGS U. S. NATIONAL Museum, VOL. XXXIV—No. 1591. 
Proc. N. M. vol. xxxiv—08——1 i 
