L'iU i.i i 1. 1. iin 82, UNITED BTATBS N V1IONAL MUSEUM 



i» Cirri with 39 43 segments; 20 arms SO mm. long; 1', with 21 segments (Zan- 



-joubini (,,. 312) 



g*. Cirii with the longest segmi nts Longer than, or at least as long as, broad. 

 /1 1 . Longest cirri with 30 3'.» 



.' Outer cirrus segments only slightly broader than long. 



;'. P| only verj slightly Longer than 1\ and resembling it but with a few less 



(26) egments whir' 1 more elongate distally; P 3 the largest and 



longest pinnule, slightly stouter throughout than P 3 , with 22 segments; 



24 arms about s- r > nun. long (from Burma eastward to the Philippines; 



27-73 [?89] meters) pulchra (p. 287) 



j' P| much longer than Pi with about the same number (33-34) of segments; 



I", much shorter than Pa, equaling Pi in length, with 27 segments; 11-20 



anus 100-150 mm. Long (Malacca Strait; 0-73 meters) .aingularia (p. 290) 



t>. Outer cirrus segments about twice as broad as long; P 2 half again as long as 



Pi, Blender and flagellate distally, with 24 segments; P 3 slightly smaller than 



I'., but much larger than Pi J 1'.) arms 80 mm. long (Zanzibar), gravieri (p. 289) 



h'. Longest cirri with 31-36 segments. 



,' Outer cirrus segments from half again to twice as broad as long; Pi and Pj 

 similar and of the same Length, 13 mm. long with 20 segments; P> shorter, 

 9 mm. long with 19 segments; 16-25 arms 110 mm. long (Pedro shoal, off 



west coast of India) compta (p. 293) 



i*. Outer cirrus segments Bcarcely broader than long; Pi 10 mm. long with 26-28 

 segments; Pj longer, 12 nun. long with 27 segments, and somewhat stouter; 

 Pi similar to P, but very slightly larger and longer; 13-18 arms 65-130 



mm. long (Madagascar) madagascarensis (p. 295) 



('. Enlarged proximal pinnules with a serrate profile, the distal ends of the component 



segments armed with spines or bearing high keel-like processes on the outer ends of 



the prismatic ridgi 



/'. Enlarged proximal pinnules stout, composed of cylindrical or only very slightly 



prismatic segments which have everted and spiuuos distal ends; disk more or less 



extensively plated; 11-2S arms 50-140 mm. long; cirri with 16-38 (usually 30-35) 



segments (Amboina and the Aru Islands; 0-20 meters) variipinna (p. 278) 



/ 2 . Enlarged proximal pinnules sharply prismatic, with the distal portion of the 

 prismatic ridges on each segment extended outward in the form of high thin 

 rounded-triangular processes or broad blunt teeth. 

 g l . Segments of the enlarged proximal pinnules with the distal portion of the prismatic 

 ridges produced into a high thin rounded-triangular process, so that the profiles 

 of these pinnules are very strongly serrate with conspicuous rounded teeth; 

 division series and arm bases very rugged, the component ossicles swollen dor- 

 sally, with prominent though rather broadly rounded synarthrial and articular 

 tubercles; 10-30 (usually between 11 and 22) arms 70-150 mm. long; cirri very 

 variable, with 25-46 (usually between 30 and 45) segments (from Philippines 

 to Andaman* [possibly Maldives] and southward to northern Australia; 0-111 



meters) crenulata (p. 253) 



g*. Enlarged lower pinnules rather slender, becoming flagellate distally, the basal seg- 

 ments sharply carinate and the segments from the third outward with the entire 

 dl ta] ednc somewhat produced and overlapping, the outer portion of the pris- 

 matic ridges being produced into a blunt spine, which is directed obliquely for- 

 ward; cirri slender, 15 mm. long with 23-26 segments; 10-13 arms 50 mm. long 



- Qgapore to Maldive Islands; littoral) producta (p. 275) 



<i». Brachials beyond the proximal fourth of the arms exceedingly short, discoidal, with the ends 



parallel, the- brachial- within the proximal fourth of the anus also t xeecdingly short, with 



parallel or -lightly Oblique ends. 



V. 1 1 1 Br series present, all or mostly 4 (3 + 4); 18-27 arms (Andaman [stands to Kwala Cassan 



and Java; littoral). philiberti (p. 313) 



