44 



notes that it is 200 mm. long. His figures and description of 

 the dental apparatus, however, are erroneous, and he has, 

 apparently, joined the mandibles to the posterior appendages 

 of the maxill?e. He observes that the first 12 segments are 

 devoid of branchiae, but he may have overlooked the simple 

 branchial processes commencing on the 6th foot. He recog- 

 nized the striated condition of the simple tapering bristles, and, 

 though inaccurate, his figure of the compound form is recog- 

 nizable. He gives the last segment of the body four cirri, but 

 only two are present in those sent by Dr. Gilchrist. 



The relationship of this form to the well-known Eunice 

 iiphroditois, Pallas, is interesting. In many respects they agi'ce, 

 and though the condition of the branchiae on the anterior feet 

 calls for notice, yet, it is easy for a simple branchial filament to 

 become branched as age advances, or the environment alters. 

 The wide distribution of Eunice aphroditois gives room for 

 great variation, stretching, as it does, over the Indian and 

 Pacific oceans to South Africa. Thus, specimens measuring 

 fully two feet in spirit, from Viti Island, Samoa, show certain 

 variations from others procured off Port Jackson, Australia, and 

 between tide-marks at Samboangan. In the large examples, 

 even the bristles are affected, for many of the compound forms 

 have lost their tips, and, besides, are considerably abraded. 



As Ehlers* has also pointed out, it is doubtful if Schmarda's 

 hliiuicc nigricaus, and his Eunice scJu^uiacepluda, are other than 

 varieties of the same form (Eunice npJiroditois). Kinberg'sf 

 figures of Eunice capensis would also appear to refer to this 

 species, as likewise Marenzeller's account of the same form 

 from Angra Pequena-Bucht.+ 



]\Iakphysa sAXGnxEA, Montagu, TCS15. 



iSj^. Xereis .'^(inguiiu'u, Montagu. Trans. Lin. Soc. xi., p. 20, 



^ PL iii., fig. I. 

 186H. Mdiphysei scini>niiu'u, Ehlers. Borstenw. ii., p. 360, Taf. 



xvi., fig. 8 -II. 



I^rocured between high and low water marks at St. James, in 

 False Bay. 



The head agrees with that of MarpJiysti sdUiiiiinen, from the 

 Channel Islands. 



The body in all is incomplete, the longest — with a short re- 

 generated posterior region, measures 85 mm., but the perfect 

 form is probably more than double the length. It is rounded 



* Borstenw. ii., p. 306. 



t Op- ^it-^ Tah. w/fiii. i6. 



I Zool. Jahrh. Bd. lii., p. 7 (sc-p. abdr.). 



