20 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 0O 



and P 4 are similar; P a is 12 mm. long, slender, with twenty-one seg- 

 ments ; P 2 is 13 mm. to 16 mm. long, enlarged, stiffened and spine-like, 

 with thirteen or fourteen segments; P 3 is 13 mm. to 16 mm. long, 

 similar in every way to P 2 , with twelve or thirteen segments ; P 4 is 



9 mm. long, similar to the preceding but proportionately smaller, with 

 ten segments ; P 5 is 6 mm. long, similar to P 4 but proportionately 

 smaller, with ten segments ; the following pinnules are small and weak, 

 4.5 mm. or 5 mm. in length, gradually increasing in size outwardly ; 

 the distal pinnules are 9 mm. long with twenty segments, very 

 slender. 



STEPHANOMETRA TUBERCULATA (P. H. Carpenter) 



Antedon tuberculoid 1891. Hartlaub, Nova Acta Acad. German., vol. 58, 

 No. 1, p. 57 CO- 



1. Ruk, Caroline Islands.- — One specimen with thirty-one arms 

 85 mm. long; the cirri have 26-27 segments and are about 23 mm. 

 long; the longest cirrus segments are usually not quite so long as 

 broad, rarely as long as broad ; the outermost nine to twelve are 

 broader than long; the enlarged lower pinnules have ten or eleven 

 segments. P 4 is more like the succeeding pinnules than in the speci- 

 men from the Admiralty Islands, and the shorter and somewhat 

 stouter cirri with shorter segments give this individual a somewhat 

 different appearance. 



2. Pitilu, Admiralty Islands; Dr. G. Dnncker. — One specimen 

 with twenty-seven arms 95 mm. long; the cirri are XXX, 20-23, 25 

 mm. to 27 mm. long; the longest segments of the longer cirri are 

 twice as long as the median diameter or somewhat longer ; P 1 is 



10 mm. or 11 mm. long, weak and slender, with seventeen or eighteen 

 segments ; P 2 is stout and spine-like, 10 mm. long with ten or eleven 

 segments ; P 3 is similar, 9 mm. to 10 mm. long with nine or ten 

 segments ; P 4 is 7 mm. long, smaller than the preceding, but stiffened ; 

 P 5 is 5 mm. long with ten segments ; the following pinnules are 

 similar, slightly smaller and weaker ; the distal pinnules are very 

 slender, 9 mm. long with eighteen or nineteen segments. 



3. Pelcw Islands. — One specimen with thirty arms 115 mm. long, 

 and cirri 25 mm. to 30 mm. long with 20-23 segments of which the 

 longer proximal are twice as long as broad and the shorter distal 

 slightly longer than broad ; the cirri are moderately slender and very 

 long as in the specimen from Pitilu, though not quite so slender as in 

 that individual ; P r is 13 mm. long, slender and flagellate, with twenty- 

 six segments; P 2 is 15 mm. long, very stiff and spine-like, but slightly 



