tlum 12 cirrus segments; the division series usually make :i large angle 

 with the dorsoventral axis so tli.it the lower part of the anima! is broad 

 and rounded; from three to six of the segments of the genital pinnules 

 are greatlj expanded, forming a rooi over the gonads; io arms (Kei 

 Islands and the Molucca Sea to southwestern Japan; 



Metres) Strotometra 



:r, with at least 15 cirrus segments; the division series usually make 

 a relatively smal! angle with the dorsoventral axis so that lower part 

 the animal is more or Iess narrow 



the ossicles of the division series and earlier brachials are relatively 

 narrow and well separated from their neighbors laterally, but the gap 

 between them is more or less completely bridged by a thin flan 

 like lateral production of the dorsolateral borders of the ossicles as 

 for as the fourth or lil'th brachials; from three to five of the segments 

 of the genital pinnules are greatly expanded, roofing over the gonads : 

 10 arms trom 100 mm. to iiomm. long (Meangis Islands and 



southwestern Japan; 650 — 900 Metres) Poecilometra 



the ossicles of the division series and lower brachials are in close 

 apposition, and are sharply flattened against their neighbors 

 d 1 genital pinnules abruptly expanded, the third and fourth segments 

 broad and nearly flat on the outer side, but the tl ft h smaller; 

 IBr series and arm bases diverging at a relatively small angle 

 so that the lower part of the animal appears bluntly conical ; 

 10 arms 90 mm. to 100 mm. long (K er mede c Islands and 



Fiji; 1134 — 2430 Metres) Charitometra 



d 2 genital pinnules usually only slightly expanded the expansion 

 always involving a number of segments and always tapering away 



■\ distally 

 e 1 arms stout at the base, becoming strongly compressed laterally 

 in the outer portion; the mid-dorsal line of each brachial is 

 elevated into a broad, high, blunt overlapping spine or tubercle; 

 the ossicl division series and the first two brachials 



have the centra] portion elevated so that their dorsal surface 

 is in the shape of a broadly V-shaped gable; the cirrus sockets 

 are arranged in one irregular, or two regular, columns in each 

 radial area; cirri X\' — XXX, 1S — 28, varying from short to 

 very long; io arms trom 75 mm. to 2 11 mm. in length (Ti mor 

 to the Meangis and Philippine Islands; 520 — 1 3 1 4 



Metres) Chondrometra 



outer portion of the arms not compressed laterally; the mid- 

 irsal line of the outer brachials may be evenly rounded, or 



