298 BULLETIN 8 2, UNITED STATES NATIONAL MUSEUM 



dark purplish. Dr. Gisl^n recorded this specimen under the name Tropiometra clarki, 

 saying that the only difi'crence of any importance is that in this specimen there is a 

 well-developed dorsal spine on the brachials of the middle part of the arm. As the 

 chief differential character of clarki is the obsolescence of the carination on the outer 

 half of the arm it would seem that this specimen should be referred to carinata, the 

 common and very variable form in the region from which it came. 



One of the specimens from Marine Investigations in South Africa station 165 has 

 28 cirrus segments. 



The specimen from off the Itongazi river, Natal, has the arms only 20 mm. long. 

 The colors are pale yellow and pink purple. 



In the two specimens from Pieter Faure station 2001, according to Gisl^n, the 

 cirri are XXIII, 23, 20 mm long, and. XXI, about 12 mm. long. 



The specimen from Zanzibar in the Copenhagen Museum is a fine example of the 

 species with arms about 110 mm. long. The carination of the brachials is much 

 reduced, appearing only as a shght median rounded and somewhat elongate tubercle 

 in the distal half of the brachials. The peculiar abrupt termination of the arms 

 characteristic of this family is remarkably well shown. The color is a deep purple. 



Hartlaub said that the specimens from Zanzibar that he examined were stout, 

 like a specimen from the Abrolhos Islands. Foiu- of them were uniformly colored, 

 dark red brown of various shades, and one was light yellowish with regular narrow red 

 brown bands on the arms and pinnules. 



The specimen from Mauritius in the Berlin Museum received from M. Guerin- 

 M^neville has the cirri XIX, 21-23 (usually 22 or 23), 15 mm. long; the carination 

 on the arms is very greatly developed as in certain specimens from Rio de Janeiro, 

 each carinate process bearing a tuft of small spines. The color is purple. 



In the specimen from Mauritius without further data in the Berlin Museum the 

 cirri are XXII, 23-26, 20 mm. long; the arms are about 80 mm. long. The color is 

 white faintly blotched with light brown. 



The six largest and most typical of the specimens from Fouquet reef have the 

 foUowmg characters: 



1. The cirri are XV, 20-23 (usually the latter), 20 mm. long. The dorsal pole 

 of the centrodorsal is flat, 5 mm. in diameter. The arms are very strongly carinate. 

 The color is plain dark purple. 



2. The cirri are XXIII, 21-24 (usually 22-23), 20 mm. long. The dorsal pole 

 of the centrodorsal is flat, 4 mm. in diameter. 



3. The cirri are XXVI, 21-25 (usually 23-24), 20 mm. long. The arms are 

 strongly carinate. 



4. The cirri are XX, 22-24 (usually 23), from 15 to 20 mm. long. The arms are 

 about 100 mm. long. 



5. The cirri are XX, 23-25 (usually 23), from 15 to 20 mm. long. The dorsal 

 pole of the centrodorsal is flat, 7 mm. in diameter. 



6. The cuTi are XIX, 22-23, from 15 to 20 mm. long. 



In these specimens the carination of the brachials is usually prominent. The 

 color is usuaUy plain purple, but some specimens have narrow yellow bands in the 

 distal portion of the arms. 



Carpenter said that the brachial carination is so slight in some individuals that 



