FROM THE CAPE OF GOOD HOPE. 257 



shaped patches (presenting a white nucleus surrounded by rcddish-brow'n pigment) 

 along the middle of the l)ack ; successive scales also meet each other sometimes, but not 

 always. The scales are orbicular, margin unfringed, often reddish in colour, with pale 

 outer border. 



The length of the tentaculum impar varies, and this may be due either to normal 

 variation or to regeneration after injury. In one specimen the median cephalic tentacle 

 was thick and white, and only half the length of the paired antenn;c, though there was 

 no sign of abnormality beyond the absence of pigment. In another the tentaculum 

 Avas barely longer than the antennae and rather stouter. In a third the tentaculum 

 was half as long again as the antennae, as long as the palps, and, like the latter, 

 terminating in a flagelliforra appendix (flagellum). 



A moderately large specimen showed 26 segments, and measured about 22 mm. in 

 length, with width of 10 mm. over the setae, 8 mm. Avithout the setae. 



One tube contained forty-one specimens taken between tide-marks amongst rocks, 

 St. James, Ealse Bay. In another there were six examples, taken amongst roots of 

 sea-bamboo off Woodstock beach, Table Bay, in 8-10 feet of water. 



The elytra are tuberculate on the surface, with plain margins. The papillae of the 

 palps are disposed in six longitudinal rows. 



3. PoLYNOE SCOLOPENDRINA, Savigny. (Plate 13. fig. 5 and fig. 25.) 



Hemilepidia tuberculata, Schraarda, Neue wirbellose Tliiere, Bd. i. 2, 1861, p. 149. 

 Polynue attenuata, Molntosh, 1885, 'Challenger' Polychseta, Reports, vol. xii. part 34, p. 120; 

 cf. Marenzeller, 1888, Polycliatea der Angra Pequena-Bucht, p. 5. 



Schmardci's Hemilepidia tuberculata cannot, in my e.x;perience, be specifically dis- 

 tinguished from Poli/noe scolopetidrlna (Savigny) *. 



Segments about 110 ; length 70 mm. ; width without setie G-5 mm., with setie mm. 

 The dorsal tubercles, of which there are a median row and a lateral row on each side of 

 the dorsum, commence about the 20th segment. The ventral (nephridial) papillae are 

 large, visible without the use of a lens. Dorsal cirri alternate with the elytra in 

 anterior region of body, becoming consecutive behind the last elytron. Cirri anales 2, 

 stout, subulate, with filiform tip. 



The elytral formula is the same as for Hemilepidia erifthrotcenia, namely, 2, 1, 5, 7, 9, 

 11, 13, 15, 17, 19, 21, 23, 26, 29, 32, always counting the segment which carries the 

 tentacular cirri, i. e. the buccal segment, as the first segment of the trunk. 



Locality. Amongst roots of sea-bamboo off Woodstock beach. Table Bay, ten specimens. 



The elytra of the first pair are round and larger than the succeeding oval scales. 

 The anterior eyes occupy the frontal peaks. 



A specimen in another tube, from St. James, False Bay, presented a pale flaccid 

 appearance. 



* Cf. Biirou de Saint-Joseph, " Les Annclides . . . de Diiuinl," Ann. Sci. Nut. (7) v. 18t<8, p. 183 ; and Mcintosh. 

 AV. C, 'British .\nnclid3,' Hay Society Mon. I'JUO, p. 3U».i. 



35* 



