260 DR- A. WILLEI ON LITTOEAL POLTCH.ETA 



9. Glycera coxyolitta africana. 



Glycera convoluiu, Keierstein, 1862, Zeitschr. wiss. Zool. xii. p. 106 ; Grube, 1869, Jabresber. Sclilcs. 

 Ges. Breslau, 1870, pp. 59 & 63; Grube, 1877, Monatsber. Akad. Berlin, p. 510 (Table Bay, 

 50 fathoms;; de Saint-Joseph, Ann. Sci. Nat. (ser. 7) xvii. 1894, p. 27. 



Glycera africana, Arwidsson, 1898, Bergens Mus, Aarbog, no. xi. p. 21 (no locality). 



From the descrij»tiou which Dr. Arvvidsson gives of G. africana in his recent studies 

 on the Glyceridfe and Goniadidte, I am unable to recognize its distinctness from 

 Keferstein's G. convolnta, and the author makes no mention of the fact that the latter 

 species was recorded by Gnibe from Table Bay among the Annelids obtained during tlie 

 cruise of S.M.S. ' Gazelle.' Keferstein pointed out that the species of the genus Glycera 

 fall into two sections, according to the presence or absence of gills. The present 

 species belongs to the gill-bearing section, and is distinguished by its biannulate 

 body-segments and by the rounded truncated character of the ventral portion of the 

 bifid posterior lip of the parapodium. The simple unbranched branchiae, absent from 

 nl)out a score of segments in the anterior region, attain their greatest dimensions in tlie 

 mid-region of the body. There are upwards of 1J<0 segments ; length 32 mm. 



Locality. Two specimens found in the mud on the mud-banks in the lagoon at the 

 mouth of the Knysna Eiver; one example dredged on mud-bottom in Table Bay at 

 a depth of 10 feet. 



10. Ne\nthes latipalpa typica. (Plate 13. fig. 9 and Plate 14. figs. 1-2 a, b.) 



Nereis latipalpa, Schmarda, 1861, Neue wirbellose Thiere, ii. p. 104. 



Neanthes latipalpn, Kinbcrg, 1865, Utv. Ak. Forli. p. 171 ; Marenzeller, 1888, Polychaten der Angra 

 Pequeua-Bucht, p. 6. 



Schmarda committed an undoubted indiscretion in applying the same specific name 

 to two diff'erent Nereids from the Cape, N. latipaljxt and Mastigonereis latipalpa, and 

 introduced a further element of confusion by making one and the same figure (Taf. xxxi. 

 fig. 244) do duty for the two species. 



The principal character of the species is afforded by the paragnaths of the order VI, 

 which constitute a monostich of large triangular teeth about 23 in number, con- 

 fluent across the middle line, so that the group V cannot easily be separated, and is 

 therefore to be regarded as quasi-existent. In Kinberg's original specimen, which 

 I have had the opportunity of examining, there were 23 teeth in the row — 11 on each 

 side and 1 in the centre. 



The first specimen in the collection of the South African Museum which I looked at had 

 the same number of teeth in the groups V + VI as in Kinberg's type. But the number 

 is subject to considerable variation, both in different individuals and on the two sides of 

 the same individual, ranging on either side from 8 to 15. The paragnaths of order I may 

 be represented by a single tooth or by two or three, placed, as usual in this group, one 

 behind the other. The teeth of group VI may be flattened and linear instead of erect 

 and conical. 



The feet are approximately equal throughout the length of the trunk {pedes cequales), 

 and the dorsal cirrus is equal to or rather less than the length of the dorsal ligule. 



