6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6l 



18. A r o Locality. — One specimen; five of the IIIBr series are I, 

 and one is 3 (2-4-3). 



19. "Antarctic Expedition." — One specimen. 



20. Blanche Bay, New Britain; Arthur Willey. — One specimen 

 with twelve arms ; the arms expand very rapidly to about the six- 

 teenth brachial, then taper distally ; the brachials are shaped essen- 

 tially as those of Comatula Solaris, strongly convex externally, with 

 a strongly concave anterior border ; they are also strongly triangular 

 instead of being more or less oblong as usual. 



21. Singapore. — One specimen with fourteen arms 120 mm. long; 

 the cirri are 20 mm. long and are composed of twenty-one segments. 



Genus NEMASTER A. H. Clark 

 NEMASTER LINEATA (P. H. Carpenter) 



Actinometra lineata 1888. P. H. Carpenter, " Challenger " Report, Comatu- 

 ke, p. 327 (1). 



I. Bahia, 7-20 fathoms; " Challenger." — Three specimens with 

 twenty-nine, twenty-nine and nineteen arms. 



Genus COMISSIA A. H. Clark 

 COMISSIA PEREGRINA (Bell) 



Actinometra peregrina 1894. Bell, Proc. Zool. Soc. London, 1894, p. 402 (1). 



I. Macclesfield Bank; 55-60 fathoms. — One specimen. The cirri 

 are XIII, 25-30 (usually nearer the latter) , 20 mm. long ; the fifth is a 

 transition segment. The mouth and the anal tube are equally 

 excentric. The ten arms are 120 mm. long ; the synarthrial tubercles 

 are only slightly evident ; the distal edges of the brachials are mod- 

 erately produced ; the distal intersyzygial interval is three oblique 

 muscular articulations. 



This species is closely related to C. liitkeni, but may be at once 

 distinguished by the greater number of cirrus segments. There is a 

 great development of small spines, especially on the pinnulars, so 

 that the animal has the curiously " dry " feeling characteristic of 

 C. liitkeni, and especially of C. dumetum. 



COMISSIA PECTINIFER A. H. Clark 



Comissia pectinifer 191 1. A. H. Clark, Annals and Mag. Nat. Hist. (8), 

 vol. 7, p. 644 (1). 



I. Christmas Island; H. M. S. "Flying Fish." — One specimen. 

 The centrodorsal is discoidal, moderately large ; the bare polar area 



