300 BULLETIN 82, TJNITED STATES NATIONAL MUSEUM 



A fourth specimen from Amboina Bay has 21 arms 105 mm. long. The cirri are 

 XIX, 28-30, from 20 to 25 mm. long. 



A fifth example from Amboina Bay has 17 arms 120 mm. long. The six IIBr 

 series are 4(3+4), and the single internally developed IIIBr series is 2. 



A sixth specimen from Amboina Bay has 18 arms about 100 mm. long. Of the 

 seven IIBr series present four are 4(3+4) and three are 2. The single IIIBr 2 series 

 is internally developed. 



The seventh specimen from Amboina Bay has 14 arms. Of the four IIBr series 

 two are 4(3+4) and two are 2. The cirri are XXI, 34-39, from 28 to 32 mm. long. 



The five specimens from the breakwater at Amboina have 21, 18, 18, 18, and 12 

 arms, which in the largest are 120 mm. long. 



The description of the species included herein is that given by Hartlaub for the 

 12 specimens collected by Brock at Amboina. 



Professor Strubell's specimen from Amboina, recorded by Reichensperger, is 

 much broken. It has about 15 arms and XXII cirri. The color in alcohol is chocolate 

 brown. 



The specimen from Singapore has 13 arms, which were probably between 70 and 

 80 mm. long; there are three IIBr 4(3+4) series just appearing. The cirri are 20-25 

 mm. long and consist of 31-35 segments. This is apparently a young example of 

 this species. 



Reichensperger said that in the specimen from Ceylon the centrodorsal is large 

 with a slightly concave dorsal pole and bears cirri in two irregular rows. The dorsal 

 pole bears isolated pits about its border. The cirri are XXIV, about 36, and are 30 

 mm. long. The segments are broader than long and from the thirteenth onward 

 bear a blunt dorsal tubercle, which on the last 8 to 10 becomes a prominent spine. 

 When viewed from above the cirri are seen to taper far less than those of Craspedometra 

 acuticirra. The 16 arms are about 140 mm. long. The structure of the distal brachials 

 and pinnules recalls that shown in Hartlaub's figure. P D reaches about 7 mm. in length 

 and consists of about 20 segments of which the four lowest are broad and sharply keeled, 

 the pinnule beyond that point becoming filiform. P t is longer, almost 12 mm. long, 

 with 25 segments, which in the basal third of the pinnule are laterally and distally 

 keeled. P 2 is the longest pinnule, about 17 mm. long with 26 segments, and is like- 

 wise keeled. P 3 is smaller than P 2 but somewhat longer than PI, with about 23 

 segments. P 4 is 7 mm. long, with 17 segments; like the next following pinnules, it is 

 keeled at the base. Reichensperger remarked that this species is strongly differen- 

 tiated from Craspedometra acuticirra. 



Professor Koehler said that the numerous specimens of this species sent to him 

 by M. Bedot are not absolutely identical with those studied by Hartlaub. The cirri 

 are XXV-XXVIII, with often 33-34, but rarely more than 35, segments. The IIBr 

 series are sometimes 2, sometimes 4(3+4). The IIIBr series, which are rarely pres- 

 ent, are 2. In contrast to what had been written by Hartlaub, Koehler found, 

 though rarely, IIIBr 2 series following IIBr 2 series. Very marked synartlirial tuber- 

 cles are present. The arms are 14-22 in number and reach 150 mm. hi length. 

 The first syzygy is between brachials 3+4, and the second is at about brachials 

 9 + 10 in arms arising directly from a IBr axillary, but at about brachials 17 + 18 or 

 18 + 19 in arms arising from a IIBr or IIIBr axillary. P! is short. P 2 is much 



