ART. iJ2 STEGOCEPHALID AND AMPELISCID AMPHIPODS SHOEMAKER 5 



Stephensen states that there are very few joints in the flagella of 

 the antennae, but that the apices are lost. In the present male speci- 

 men, which measures 5.5 mm., antenna 2 projects slightly beyond 

 antenna 1. In antenna 1 the first joint of the peduncle is longer than 

 the second and third joints combined ; the flagellum, which is slightly 

 longer than the peduncle, is composed of three joints, the last of 

 which is very slender and nearly as long as the first and second com- 

 bined; the accessory flagellum is longer than the first joint of the 

 primary flagellum and is composed of two joints, the second of which 

 is more than half the length of the first but much slenderer; from 

 the under side of the first of these joints near the extremity projects 

 a long slender spine, which reaches considerably beyond the end of 

 the second joint. The first and second joints of the primary flagellum 

 also bear long slender spines on their under surfaces near their ex- 

 tremities. In antenna 2 the fifth joint of the peduncle is nearly as 

 long as the fourth; the 3-jointed flagellum is nearly as long as the 

 fourth and fifth peduncular joints combined; the first joint of the 

 flagellum is slightly longer than the second and third combined. The 

 mandible has the cutting edge very heavily toothed, and bears a sec- 

 ondary plate, which is nearly as large and strongly toothed as the 

 prtmary. The palp and outer plate of maxilla 1 are as figured by 

 Stephensen, the inner plate is much shorter and broader than the 

 outer, and its convex edge bears a row of plumose setae. He states 

 that maxilla 2 is exactly as in Phippsia gibhosa (Sars),^ but in the 

 present specimen the inner plate is shorter and broader with the 

 extremity evenly convex, and not obliquely truncate as figured by 

 Sars; the spines at the apex of the outer plate are, however, as 

 Stephensen describes them. 



The maxillipeds are said to be as in Stegocephalus in-flatus Kroyer, 

 but the palp appears to be stouter and shorter, and the inner and 

 outer plates longer, the outer reaching beyond the end of the second 

 joint of the palp. The proximal half of the inner edge of all the 

 peraeopods is armed with a row of minute spinules. The very 

 minute notch in the rounded hind corner of the third pleon segment 

 Stephensen believed to be due to accidental damage, but the present 

 specimen bears three small serrations at this corner. The telson is 

 as figured by Stephensen. 



ANDANIELLA PECTINATA (G. O. Sars) » 



Figures 3, 4 



1882. Andania pectinata G. O. Saks, Forhandl. Vidensk.-Selskab. Christiania, 



no. 18, p. 86, pi. 3, fig. 9a, b. 

 1891. Andaniella pectinata G. O. Sabs, Crustacea of Norway, vol. 1, p. 211, 

 pi. 72, fig. 3. - ■ 



* Crustacea of Norway, vol. 1, pi. 71, flg. 1, 1891. 



» Schellenberg, in Bull. Mus. Comp. Zool., vol. G9, no. 9, p. 197. 1929, has in his key to the 

 genera of the family Stegocephalldae accidentally transposed the characters for Andaniop- 

 sis and Andaniella. 



