226 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



gether in the distal pinnules. The distal pinnules are slender and smooth, 9 mm. 

 in length. 



The color in alcohol is dull yellowish, the arms and pinnules thickly blotched 

 with purple; or brownish yellow; or yellow with the division series and arm bases 

 bordered with purple, and the pinnules, cirri, and occasional narrow bands on the 

 arms purple; or violet, the cirri yellow. 



One of the specimens from off the Ganjam coast in 27-46 meters is peculiar in 

 having P 3 similar to, and nearly as large as, P 2 , which is somewhat smaller than usual. 



The two specimens from off Gopalpore in 46-51 meters have the lateral processes 

 on the segments of the lower pinnules long, curved, and hooklike. The segments of 

 the lower pinnules other than those that are enlarged are produced and spinous. 

 One of the specimens has an arm length of 65 mm., and the other is slightly smaller. 



Both of the specimens from off Gopalpore in 55-69 meters have an arm length 

 of 60 mm. In one of them the distal ends of the segments of the lower pinnules are 

 all produced and finely spinous, in addition to the production of the distal corners. 



In one of the specimens from Investigator station 95 the synarthrial tubercles and 

 the processes on the proximal pinnules are strongly marked. 



One of the three specimens from Investigator station 92 has the processes on the 

 proximal pinnules more pronounced than usual and the synarthrial tubercles 

 prominent. 



In the specimen from Madras the arms are 80 mm. long. The cirri are XV, 

 22-24, 10 mm. long. P 2 is 7 mm. long with 15 segments, very stout, with prominent 

 processes at the prismatic angles of the segments. 



The specimens from the Ceylon Pearl Oyster Fisheries investigations, as de- 

 scribed by Chadwick, have the cirri XV, 17. The segments from the second to the 

 antepenultimate have a strong dorsal transverse ridge which is near the distal end 

 in the first few but becomes median and, viewed in profile, spine-like on the later 

 ones. The opposing spine is strong. The arms are slender and serrate, and are com- 

 posed of about 150 brachials. Syzygies occur between brachials 3+4, 9 + 10, and 

 14 + 15, and distally at intervals of 6-8 muscular articulations. P! is composed of 

 11 segments of which the first three are broad and the remainder are cylindrical, 

 twice as long as broad, with two very minute spines projecting from their distal ends. 

 P 2 is stouter than PI and nearly twice as long and is composed of 13 segments of very 

 similar character. P 3 is composed of 9 or 10 segments and is smaller than P t . P a , P b , 

 and PC are smaller than PI, P 2 , and P 3 , but their component segments are similar, as 

 are those of the next ten or twelve pau-s, though in the latter the basal segments differ 

 in diameter less markedly from then" successors. 



The seven specimens collected by the Investigator off the southern coast of Ceylon 

 are all medium sized or small. 



Of the two specimens from Muhlos, Maldive Islands, one has the arms about 

 50 mm. long. The cirri are XVI, 15-16, 7 mm. long. P 2 has 12 or 13 segments, the 

 processes on the distal ends of the segments being of average development. The 

 other specimen is similar but smaller, with the arms 40 mm. long. 



The specimen from the Pedro shoal is large, with the cirri XVI, 21-23. 



A small specimen from Bagamoyo appears to be referable to the typical form. 

 The segments of P 2 bear prominent stout high tubercles or short, very stout, blunt 



