176 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



segment, with the apex terminal, and is equal in height to about one-half the width of 

 the segment. The terminal claw is about as long as the penultimate segment and is 

 rather stout; it is strongly curved proximally, but becomes more slender and straighter 

 distally. 



The arms are essentially like those of E. indivisus and measure 55 mm. in length. 



P c is 3.5 mm. long with 9 or 10 segments. It is small and weak, rounded-pris- 

 matic, and tapers evenly from the base to the tip. The segments are at first short, 

 becoming about as long as broad on the third and twice as long as broad, or even 

 longer, terminally. P! is 4.5 mm. long with 9 or 10 segments, resembling P c but 

 proportionally larger and stouter. P a is 7 mm. long, much larger and stouter than 

 the preceding or succeeding pinnules, with 10 segments of which the first is slightly 

 over twice as broad as long, the second is about half again as broad as long, and the 

 third is half again as long as broad ; the following segments gradually increase in length 

 and become about 3 tunes as long as broad distally. The pinnule is much more slender 

 than the corresponding pinnule in the other species of the genus. The second and 

 following segments have rather strongly produced distal edges which are armed with 

 fine spines. P 2 is similar but slightly longer and larger. P b is 5 mm. long, slender, 

 with 12 segments, in general resembling the preceding pinnules. P c is 3 mm. long 

 with 9 or 10 segments which after the third become much elongated, small, and weak. 

 The distal pinnules are very slender, 6 mm. long. 



The color in alcohol is a uniform dark purple, the cirri beyond the transition 

 segment being nearly white. 



Notes. The second specimen from the type locality has the cirri XIII, 16-18 

 (usually 18), 10 to 12 mm. long; the sixth is a transition segment. P c is 4 mm long, 

 with 10 segments. P a is 9 mm. long, with 11 segments. P b is 6.5 mm. long, with 

 14 segments. 



The individual from the Kei Islands is apparently of this species, although the 

 identification is not quite positive. 



In the larger specimen from the Maldive Archipelago the cirri are XVI, 13-16. 

 The first segment is very short, the second is somewhat more than twice as broad as 

 long, the third is nearly twice as long as the median width, the fourth is about twice 

 as long as the width of the proximal end, the fifth is not quite so long, and those follow- 

 ing slowly decrease hi length to the tenth or eleventh, which is half again as long as 

 the width of the proximal end, then increase hi length slightly so that the antepen- 

 ultimate is from half again to twice as long as broad. The second-seventh segments 

 are rather strongly constricted centrally, this feature decreasing distally so that the 

 last two or three segments before the penultimate are oblong. The opposing spine is 

 small, sharp, erect, and subterminal. The terminal claw is about as long as the 

 penultimate segment, and is stout, rapidly tapering, and moderately curved. P c is 

 2.5 to 3 mm. long with 9 segments. It is stout basally, rapidly tapering to a fine tip, 

 and is strongly prismatic. The first segment is short, the second is twice as broad as 

 long, the third varies from nearly as long as broad to one-third again as broad as 

 long, the fourth is from one-third to one-half again as long as broad, and those follow- 

 ing are about twice as long as broad, becoming longer distally. The first three or 

 four segments are rather strongly carinate, the crest of the carination being parallel 

 with the axis of the pinnule. PI is 3.5 mm. long with 10 segments, similar to P c but 



