NO. I POINT BARROW AMPHIPODA — SHOEMAKER I7 



Male. — Figures of some of the appendages have been given here 

 which will help in the identification of this species. The lateral lobes 

 of the head are broadly rounding and the eye is of medium size and 

 light in color in alcohol. Antenna i longer than antenna 2, both 

 rather slender. Maxilla i with a i -jointed palp. Mandible with a 

 3-jointed palp. Gnathopod i slender and much like that of Metopa 

 spitshergensis Briiggen. Gnathopod 2 strongly developed, the fourth 

 joint with several groups of short spines on the lower margin; sixth 

 joint widening distally, palm transverse with a deep indentation ad- 

 jacent to the strong defining tooth; seventh joint strong and curved. 

 Peraeopod i slender. Peraeopod 2 stouter than i ; seventh joint with 

 a row of blunt teeth on inner margin. Peraeopods 4 and 5 with second 

 joint greatly expanded. Peraeopod 4 with fourth joint much longer 

 than wide. Peraeopod 5 with fourth joint considerably expanded but 

 proportionally shorter than that of peraeopod 4. Uropod 3 with 

 peduncle distally produced. Telson with 2 small spines on either 

 lateral margin. M. clypeata is a large species measuring 14 mm. 



Female. — The female is very much like the male. Gnathopod 2 is 

 not quite so strongly built and the characters are not so pronounced, 

 but it closely resembles that of the male. The largest females are as 

 large as the fully developed males. 



Metopa clypeata has been recorded from East and West Greenland 

 and the Gulf of St. Lawrence, and has been taken as low as 300 m. 

 The present records are the first for Alaska. 



METOPA GLACIALIS (Kroyer) 



Figures 5, g-l, 6, a-d 



Leucothoe glacialis Kroyer, 1842, p. 159; 1846b, pi. 22, fig. 3a-p. 



Stenothoe clypeata Stimpson, 1854, p. 51. 



Metopa glacialis Hansen, 1887a, p. 93, pi. 3, figs. 6, 6a. — Stephensen, 1913, p. 



139. 



Proboloides glacialis Stebbing, 1906, p. 189. — Stephensen, 193 i, p, 194; 1938, 



p. 178, fig. 21. 

 Metopa cariana Gurjanova, 1929a, p. 313, fig. 5. — Schellenberg, 1935, p. 23. — 



Stephensen, 1944b, p. 56. 



Material collected. — In 477 feet, 16 miles out, September 6, 1949, 

 4 specimens. 



Metopa glacialis (Kroyer), Stenothoe clypeata Stimpson, and 

 Metopa cariana Gurjanova appear to be one and the same species. 

 They are alike in form, occur at about the same depths, are of the 

 same length, and inhabit the cold waters of the North Atlantic and 

 Arctic Oceans. Schellenberg states that in glacialis the first maxilla 



