612 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



series, 8 are 4 (3 + 4) and 2 are 2. The centrodorsal is greatly reduced and is rounded 

 pentagonal. There are no cirri, but 2 very small cirrus buds are present. 



The specimen from Dobo Strait, Aru Islands, as described by Reichensperger, 

 has 43 arms 95 mm. long. Several of the IIBr series are 2. On one ray a IIBr 2 

 series is followed by 2 IIIBr 2 series. The cirri are wholly lacking. The color, as 

 preserved, is olive. 



The details of the 9 specimens dredged by the Endeavour between Fremantle and 

 Geraldton are as follows : 



The arms are about 45 in number and are about 110 mm. long. There are VI 

 cirri. 



There are 40 arms about 110 mm. long and X cirri. 



There are about 40 arms. One of the IIIBr series is 7 (3 + 4,6 + 7). The centro- 

 dorsal is a pentagonal plate slightly raised above the dorsal surface of the radial 

 pentagon, with a few obsolete cirrus sockets about its periphery. 



There are about 40 arms. The centrodorsal is very thin discoidal, pentagonal 

 in outline. There are III cirri. 



There are about 35 arms which are about 110 mm. long. 



There are about 35 arms about 90 mm. long. The centrodorsal is greatly 

 reduced. There are III cirri. 



There are about 35 arms and VIII cirri. The centrodorsal is greatly reduced. 



There are about 30 arms and V cirri. 



There are about 25 arms which are about 115 mm. long. 



Of these specimens, 2 are imiform light yellowish brown. The other 7 are 

 yellowish brown, darkest on the calyx, division series, and arm bases, where they are 

 thickly covered with small uniform circular green spots. According to the label 

 these were dull green in life. 



These specimens agree with those taken by the Hamburg southwest Australia 

 expedition at Shark Bay, and with others which I have examined from the vicinity 

 of Perth. 



Dr. H. L. Clark said that in the 7 specimens which he examined from Wooded 

 Isle the number of arms ranged from 36 to 47, and their length varied from 100 

 to 125 mm. 



In the specimen with 36 arms all the division series beyond the IBr series are 

 4 (3 + 4), but in the 1 with 47 arms 4 of the IIBr series and 1 of the IVBr series are 2. 

 The cirri are very weak, V-VIII, 12. 



Doctor Clark noted that the uniformity of these specimens in coloration is their 

 most notable feature, and in this they agree with 7 of the specimens from between 

 Fremantle and Geraldton, except that they have apparently a darker ground color. 

 But they are all spotted with uniformly small circular greenish-yellow dots, generally 

 quite distinct, but obscured in some of the darkest specimens. Doctor Clark 

 remarked that in view of the extraordinary diversity in color of this species at the 

 Murray Islands, Torres Strait, it is remarkable that no diversity at all is shown 

 at the Abrolhos. He suggested that possibly this western form may be worthy of 

 a varietal name, but further field observations are necessary before a decision can 

 be reached. 



