A rcn icola loi 'en i 



103 



Arenicola loveni Kinberg, emend. 



Plate III; Plate IV, Fig. 11. 



Kinberg, Ofvers. Kongl. Vet.-Akad. Fih-liandl., 1866 (1867), p. 355 (Port Natal, 

 Durban); Eug. Kesa, Zool., vii, Annul. (1910), p. 78, t. xxix, 1. 



Ashworth, Arkiv fiir Zool., vii (1910), no. 5, 1 pi. (Saldanha Bay) ; Ann. 

 S. Afr. Mus., xi (1911), p. 1, pi. i (False Bay). 



Fauvd, Mem. Soc. Nation. Sci. Nat. Matli., Cherbourg, xxxi (1899), p. 179. 



Caudate ^vir«M'co/a with nineteen cliaetiferous segments; thirteen 

 pairs of gills, the first gill on tlie seventh segment, gills large and 

 pinnate; the median lobe of the prostominm is large, the smaller 

 lateral lobes are of almost nni- 



N.Gr 



Pr. 



Per. 



A.B.S. 



"h-Seg! 



form width, that is, they are not 

 dilated or lol)ate at their anterior 

 ends ; neiiropodia are clearly 

 visible in each segment, those 

 of the brancliial and of the two 

 prebranchial segments are long 

 dorso-ventrally and almost reach 

 the mid-ventral line ; each noto- 

 podial seta bears numerous 

 finely-toothed crests or " Siige- 

 blatter" at regular intervals 

 along the distal third of its 

 shaft, and this part of the seta 

 presents a well-marked trans- 

 verse striation ; - five pairs of 



nephridia, which open on the fifth to the ninth segments ; one 

 pair of oesophageal glands ; two enormous septal pouches which 

 pass through apertures in the second septum and terminate imme- 

 diately in front of the third septum; a pair of closed statocysts, 

 each containing a single large secreted statolith. 



HiSTorjCAL Account. — The species Arenicola loveni, which was 

 founded on a specimen collected at Port Natal, near Durban, was 

 defined by Kinberg in the following terms : " Segmentum bnccale 



' Worthy of note is the very large number of tail segments in this species ; 

 in three specimens there were respectively 175, 186 and 205 septa in the tail, 

 indicating as many segments. 



• See Fig. 11, p. 44. Crotchets are shown in Fig. 27, p. 56. 



Fig. iZ.— Arenicola loveni, from SaUlaiilia Bay. 

 Anterior end, dorsal aspect. PR. Prostominm ; 

 Per. Penstomiuni ; N.Gr. Nuchal groove; A.B.S. 

 Achaetous body-segraent ; CH.Skg.' First chaeti- 

 ferous segment. 



