quite so long. 1' is 8 mm. long with :i segments which, gradually increasing in length, become 

 as long as broad <>n the third and on the eighth and following twice as long .is broad; the 

 pinnule is very slender and delicate. P is 1 2 mm. long with 24 segments, and is exactlj 

 likt- 1' I' is very slender, 1: mm. long with 21 segments of which the firsl is very short, 

 the second is nearlj .1- long as broad, the third is slightly longer than broad, and the following 

 slowly increase in length so that the ninth and following are nearly two and one half times 

 as long as broad, 1', is '> mm long with 15 segments, not quite so stout basally as 1' and 

 tapering more rapidly The proximal pinnules, though very slender, are all slightly stiffened. 



The disk is completely covered with a pavement of rather smal! irregular plates. 



The colour is light gray, with very narrow black hands at the articulations ; the cirri 

 are white, the distal half light purple ventrally, this increasing in extent distally. 



The second specimen has 23 arms; the division series are broad and sharply tlattened 

 laterally; the distal ends of the ossicles of the division series and of the brachials are everted, 

 producing a curiously rough appearance. The disk is completely covered with smal! rounded 

 calcareous plates. 



It is quite possible that L. regalis is really the young of this species. 



Dichrometra A. II. Clark. 



Key to the Species of the Genus Dichrometra. 



1 'istal cirrus segments smooth dorsally, or with a slight dorsal carination, 



slightly broader than long; about 20 arms (southernjapan) döderleini*) 



a 1 >istal cirrus segments bearing dorsally tubercles or spines 



b 1 distal cirrus segments much longer than broad, bearing a prominent spine 



in the centre of the dorsal surface; about 20 arms (Java Sea). . . . tenuicirra 

 b' 3 distal cirrus segments broader than long, usually very much so; 29 — 50 arms 

 c 1 the distal cirrus segments, which are not greatly broader than long, bear 



obsolete dorsal tubercles; P t is about as long as P s ; 40 arms Moluccas) bimaculata 

 c the distal cirrus segments, which are much broader than long, bear 

 prominent dorsal spines 



d 1 synarthrial tubercles prominent, though swollen and broadly roundi d, 

 and the lower brachials slightly swollen, so that the proximal portion 

 of the animal presents a rugged and rugose appearance; 1', about 

 as long as, or longer than, I' ; elongated proximal pinnules with the 

 component segments short, in large specimens slightly longer than 

 broad, in small specimens nol becoming twice as long as broad until 

 at least the middle of the pinnule (Singapore and the Malay 

 Archipelago to Hong Kon-, the Pelew and the A d- 

 miraltylslands flagellata '1 



1 Synonym ' ' rk. 



I. Mttller l.utkcn. 



