73 



from the neck of the hook and curves over the tip. The shaft 

 diminishes from the crown to the shoulder near the anterior 

 third, and then narrows with a curve to the base. 



Marenzeller had complete examples of this Maldanid from 

 Angra Pequena, somewhat further northward on the eastern 

 coast of xlfrica, but they seem to have been much smaller, 

 only from 40 to 45 mm. long and 2*5 mm. in breadth, whereas 

 the fragment from the Cape measures 48 mm. and is about 

 3 mm. in diameter, so that in all probability the entire animal 

 would not be less than 60 mm. 



The head appears to be less developed than in N. liimbricalis, 

 though having similar characters. The first six bristle-bearing 

 segments are shorter than the three following. The first three seg- 

 ments have simple hooks after the plan of those in the common 

 species, the rest have the characteristic hooks, and Marenzeller's 

 figure (fig. 8 E) of the anterior hook difi^ers only in comparative 

 length, being slightly shorter than that from the posterior 

 fragment from the Cape. He also describes the anal plate as 

 granular, but apparently the small size of his examples did not 

 exhibit the variolar condition so conspicuous in the larger 

 specimen from the Cape. No tube is mentioned by this author. 



The posterior end of Grube's Muldanc glcbifcx* is bevelled 

 somewhat in the same manner, but it appears to be on a much 

 smaller scale proportionately. The posterior end of Mnldanc 

 cloiigcita, Verrill,t has an obliquely truncated posterior border 

 surrounding the base of the large anal process, which is 

 obliquely placed, foliaceous, obovate, with the posterior edge 

 broadly rounded, the upper surface concave, and the margin 

 entire. 



The posterior end of the Makhiiic dinpliiglxpta of Ehlers,| 

 from Magellan, has likewise a free flap, but of a different char- 

 acter from the South African form. 



Unfortunately no figure is given, so that it is difficult to 

 make a minute comparison. The American form was got 

 at low water mark near New Haven in thick tubes of fine mud. 



Pkaxilla PR.^TErmissa, Malmgren var. CAPENSIS, Mcintosh. 



1885. Pi'^i'^illa Capeiisis, Mcintosh, "Challenger" Annel., p. 



404, PI. XXXV A., fig. 8. 

 1867. Praxillapra'tcrinissa, Malmgren, Nord. Hafs-Ann.p. 191. 

 1867 „ „ Ibid., Ann. Polych., p. 100, Taf. 



xi., f. 62. 



A form about 250 mm. in length and proportionately large. 

 The head has a frontal shield like that in the European Praxilhi 



* Archiv. f. Naturges, i860, p. 92, Taf. IV., 1. 4, 



t Op. cit., p. 609. 



X Polychaet. Magalhaen, Sammelreise, Hamb. 1897, p. 119, Taf. VIII. f. iSj-ii;^. 



c 



