NO. IO CRINOIDS OF HAMBURG MUSEUM — CLARK 7 



COMANTHERIA GRANDICALYX (P. H. Carpenter) 



Actinometra grandicalyx 1882 P. H. Carpenter, Journ. Linn. Soc. (Z06L), 

 vol. 16, p. 520 (1). — 1888. "Challenger" Report, Comatulse, p. 330 (1). 



I. Canton, China; Werner. — One specimen, the type of the species ; 

 the centrodorsal is large, low hemispherical, 9 mm. in basal diameter ; 

 the dorsal pole is concave in the center, 4 mm. in diameter ; the cirri 

 are about XL, 22-24 (usually the latter), 25 mm. long; the longest 

 proximal segments (the eighth or ninth) are slightly longer than 

 broad ; the outermost ten or eleven are rather abruptly shorter than 

 the preceding, about twice as broad as long, highly polished, with low 

 obscure broad median tubercles which become better developed dist- 

 allv ; the forty-seven arms are about 100 mm. long; the IIBr series are 

 all 4(3 + 4), the IIIBr series all 2, and the IVBr series all 4(3 + 4) ; 

 the disk is 35 mm. in diameter; the terminal comb on the proximal 

 pinnules has from twelve to fifteen ( usually fourteen) teeth which are 

 low and rounded ; they arise gradually and distally gradually become 

 obsolete; the basal segments of the pinnules (the second to the fifth) 

 have spinous rounded distal processes, suggesting the conditions 

 carried to an extreme in Comastcr belli; the color is grayish brown, 

 with a broad median line of white on the division series and arms. 



The general appearance of this animal is similar to that of Conian- 

 thus pinguis, and there is the same large centrodorsal ; the brachials 

 imbricate slightly. 



2. Fuchow, Province of Fokien, China ; Consul G. Siemssen ; April 

 4, iqo6. — One specimen closely resembling the type, but slightly 

 smaller and less robust; the centrodorsal is large, with a strongly 

 concave dorsal pole 3 mm. in diameter ; the cirri resemble in general 

 form those of Comanthus bennetti; they are 25 mm. long with 23-25 

 segments of which the first three are very short, the fifth is about as 

 long as broad, and the seventh-tenth the longest, slightly longer, 

 though scarcely so much as one-third longer, than broad ; the follow- 

 ing decrease very slowly in length to about as long as broad or slightly 

 broader than long; but the terminal nine or ten are abruptly shorter 

 than the preceding, twice as broad as long or even broader ; these, 

 as in the type, have a polished surface in contrast to those preceding 

 which have a dull surface, and bear a low rounded and obscure dorsal 

 hump which becomes more evident toward the end of the cirrus ; the 

 forty-eight arms are about no mm. long; the IIBr series are all 

 4(3 + 4) ; all hut two of the IIIBr series arc 2, the exceptions being 

 4( 3 + 4) ; six of the IVBr series are 41 3 + 4) and two are 2 ; the divi- 

 sion series are rather broad, well-rounded dorsally and net in lateral 



