24 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



Material collected. — In lOO to 341 feet, 4 to 7.5 miles out, Sep- 

 tember 1948 and August, September, and October, 1949, 40 specimens. 

 Elson Lagoon, Eluitkak Pass, in 40 feet, August 30, 1948, i specimen. 



Metopella longimana occurs in the Arctic Ocean, North Atlantic, 

 and North Sea. It has been recorded from Norway, Denmark, East 

 and West Greenland. The present records are the first for Alaska. 

 It measures about 3 mm., and occurs down to about 115 m- 



MESOMETOPA NEGLECTA (Hansen) 



Figure 8, a-f 



Metopa neglecta Hansen, 1887a, p. 96, pi. 3, figs. Q-gb.— Stebbing, 1906, p. 184. 

 Metopella neglecta Sars, 1892, p. 274, pi, 97, fig. 2.— Stephen sen, 1931, p. 194; 

 1938, p. 177. 



Material collected. — In 80 to 125 feet, September 8 to Septem- 

 ber 15, 1948, 4 specimens. In 175 feet, 4 miles out, October 14, 1949, 

 3 specimens. In 184 feet, 5 miles out, August 30, 1949, 2 specimens. 

 In 216 feet, 4.3 miles out, October 6, 1949, i specimen. 



This species has been transferred to Mesometopa, as the mouth- 

 parts agree with that genus as defined by Gurjanova. It is easily 

 identified by the very characteristic shape of the second joint of the 

 fifth peraeopod (fig. 8, /). Mesometopa neglecta has been recorded 

 from Franz Joseph-Land, West Norway, and West Greenland. The 

 present records are the first for Alaska. This species measures about 

 3 mm., and it has been taken between 12 and 115 m. 



MESOMETOPA GIBBOSA, new species 

 Figure 8, g-m 



Material collected. — In no to 140 feet, August 21, 1948, 3 speci- 

 mens. In 80 to 125 feet, September 8, 1948, 4 specimens. In 120 

 feet, September 15, 1948, 6 specimens. In 180 feet, 5 miles out, 

 August 30, 1949, I specimen. In 130 feet, 6 miles out, September 15, 

 1949, I specimen. In 216 feet, 4^ miles out, October 6, 1949, 

 3 specimens. In 420 feet, 7 miles out, October 9, 1949, i specimen. 

 In 6 to 50 m., July 29, 1951, 6 specimens. 



Male. — Head with lateral lobes rather sharply angular. Eye large, 

 red in alcohol. Antennae short and slender. Antenna i shorter 

 than 2; first peduncular joint thicker and longer than the second, 

 which is over twice as long as the third ; flagellum about two-thirds 

 as long as the peduncle and composed of 10 joints. Antenna 2, third 

 peduncular joint expanded proximally with upper margin noticeably 

 raised above that of the second joint; fourth joint longer than either 



