4- //. ■ 



trol. Deutschen Akad. der Natu; vol. 58, 



il. pi. nol 21 .«- given in the reference to 



1 North ri)i.mi. 16—23 Metres. 1 Ex 



, arms about -> > mm. long; each IBr series bears on the right 

 hand - a IlBr 4 3 + 4) series; the two additional arms on the lcft 



mi onl) :: mm. in length, measuring from the axillary. The longest cirrus 



Th mul; individual just completing the adolescent autotomy. 



Amphimetra A. II. Clark. 

 Key i" the Species of the Genus Amphimetra. 



very stout, > omposed of very short subequal segments which are usually 



iut four times as broad as long-, the outer segments, which are relatively 



ry slightly longer than the proximal, bear small sharp median spines 



b' larger and stouter; cirri very large and stout, usually evenly curved 



throughout the entire length, never tapering distally, composed of 45 — 51 



segments of which the distal half or two thirds bear dorsal spines; arms 



from [50 mm. to 170 mm. long (Philippinelslands) spectabilis 



-maller and more delicate: cirri very stout basally, but usually tapering 

 more or less distally, usually curved much more stronylv in the distal 

 than in the proximal halt", composed of 34 — 37 segments of which nearly 

 all bear dorsal spines ; arms from 100 mm. to 115 mm. long (Maldives 

 to the Sunda Islands, the Moluccas, the Philippines and 



Singapore) molleri 



1 "irri more slender, more or less straight in the proximal half but strongly 

 curved distally, composed of segments which are longer in the proximal portion 

 than distally; the proximal segments are from twice as broad as long to as 

 - or slightly longer than, broad 



basal ts of the pinnules in the proximal foUrth of the arm are 



ngly carinate; 1'. is the largest and longest pinnule, slightly larger and 



than 1' , and twice as long as the distal pinnules; cirri XII, 30 — 33; 



mm. long Philippine Islands; ? North Borneo) . . pari/is 



ments of the earlier pinnules are not carinate; the longest 

 imal pinnule is usually P, more rarely I'. which is very little, if any, 

 than the distal pinnules 



nol tapering distall}-; all of the cirrus segments are markedly 

 than lo 



