A MOXOGRAPH OF THE EXISTING CR1-VOIDS 57 



The cirri arc about XL, about 70, about 45 mm. long. They arc moderately stout 

 and only slightly tapering. They are somewhat compressed laterally and when diy 

 have the appearance of ivory. The first 5 or 6 segments are short, the next longer than 

 broad, and the 3 or 4 following about as long as broad. The remainder arc shorter, 

 especially toward the end of the cirri. When viewed from the side the cirri have a 

 deeply serrate dorsal profile from about the fifteenth segment on, resulting from t lie- 

 presence of dorsal tubercles. There are no true spines except on the penultimate 

 segment. 



The radials are plainly visible in the interradial angles. The IBri are short and are 

 entirely united laterally. The IBr 2 (axillaries) are rhombic. The IIBr series are 2. 

 The division series and first brachials have sharply flattened sides. 



The 20 stout arms, which have an uneven dorsal surface, are probably about 70 mm. 

 long. The first brachials are short, rhombic, and laterally united interiorly. The 

 second brachials are a good deal longer than the first and are longer exteriorly than 

 interiorly. The first syzygial pair (composed of brachials 3 + 4) is approximately as 

 long as broad. The following 6 or 7 brachials are bluntly wedge-shaped, and then 

 comes a series of triangular brachials of which the distal edge overlaps the base of 

 the brachial following with alternating lateral processes. Farther out the brachials 

 become wedge-shaped again, finally becoming more and more oblong. All the brachials 

 with the exception of the first two have produced and overlapping finely serrate distal 

 edges. The distal portion of the arm has a sharp dorsal longitudinal carination. 



Syzygies occur between brachials 3 + 4, again from between brachials 19 + 20 to 

 between brachials 26 + 27 (usually between brachials 26+27), and distally at intervals 

 of 4-8 muscular articulations. The syzygial unions are not smooth exteriorly, but 

 are almost the same as the muscular articulations. 



PI and P a are slender and taper rapidly from the somewhat broadened basal 

 segments; they are about 11 mm. long with 15-20 segments the majority of which are 

 elongated and cylindrical. The pinnules of the three following pairs decrease gradually 

 in length. The smallest pinnule is P d , which is only 4 mm. long. The segments of 

 these pinnules are flatter and broader than those of the pinnules of the first pair 

 (P] and P). The following pinnules reach a length of 11 mm. and are remarkable 

 for their broad flat segments. 



The ambulacral groove of the pinnules is provided with well-developed side and 

 covering plates. Sacculi are few and small. 



The disk is 14 mm. in diameter. 



The skeleton is brownish white, the disk dark brown. 



Notes. As Dr. Hartlaub said, the type specimen is badly broken. All the arms 

 and cirri are broken off, and in general the pinnules are not preserved. Only the 

 proximal portion of the animal and the arm bases are well preserved. I have examined 

 the type specimen, which was well described by Hartlaub. 



Locality. Japan; Dr. Franz Martin Hilgendorf: "Dr. Hilgendorf told Dr. Hartlaub 

 personally that according to his recollection the specimen came from deep water 

 [Hartlaub, 1890, 1891; A. H. Clark, 1907, 1909, 1912, 1915, 1918; Gislen, 1934] (1, 

 Berl. Mus., 2830). 



History. This species was described under the name of Antedon conrfera by Dr. 

 Clemens Hartlaub in 1890, and was redescribed and figured in the following year. 



84380350 5 



