l86 DISCOVERY REPORTS 



Discussion. In re-examining Monro's (1930) material of V. formosa I find the specimens from 

 ' Discovery ' Sts. 85 and 287 are V. crystallina (below) and those from Sts. 270 and 282 are V. longis- 

 sima (p. 187). 



General distribution. V. formosa is widely reported from the South Atlantic where it has its southern 

 limit of distribution at the Sub-Tropical Convergence (see pp. 252-255). 



Vanadis crystallina Greeff, 1876 

 Type locality. Gulf of Naples. 



Vanadis crystallina Greeff, 1876, pp. 68-9, pi. 4, figs. 35-9. 

 Alciopa Candida Hering, 1892, p. 732, pi. 3. 

 Vanadis crystallina Apstein, 1900, pp. 10-11, pi. i, fig. 7. 

 Vanadis cristallina Lo Bianco, 1904, p. 50, fig. 112. 

 Vanadis crystallina Granata, 191 1, p. 56. 

 Vanadis crystallina Ehlers, 1913, p. 466. 

 Vanadis crystallina Fauvel, 1916, p. 66. 

 Vanadis crystallina Fauvel, 1923, pp. 206-7, %• 77^> e - 

 Vanadis aageneri Benham, 1929, pp. 187-8, pi. 1, figs. 1-7. 

 Vanadis formosa Monro, 1930, p. 81 (in part). 

 Vanadis crystallina Fauvel, 1932a, p. 17. 

 Vanadis Angeneri Fauvel, 1935, pp. 295-6. 

 Vanadis crystallina Monro, 1936, pp. 1 16-17. 

 Vanadis formosa Monro, 1937, p. 268. 



Vanadis crystallina Wesenburg-Lund, 1939, pp. 32-4, fig. 22, chart 16. 

 Vanadis Angeneri Fauvel, 1951, p. 292. 

 Vanadis crystallina Stop-Bowitz, 195 1, p. 7. 



Description. V. crystallina may measure up to 145 mm. in length by o-6 mm. wide across the 

 parapodial bases and 3-0 mm. wide across the tips of chaetae, but complete specimens are rare. The 

 antennae are small and conical. The proboscis carries two long terminal processes with two pairs of 

 basal ailerons continuous with dorsal and ventral circlets of four to six papillae. Three pairs of tenta- 

 cular cirri are present on successive segments behind the prostomium, of which the first are the 

 longest and are joined ventrally by basal ceratophores. The first seven to ten pairs of parapodia are 

 rudimentary ; they have no chaetae and only very small parapodial cirri of which the dorsal are the 

 largest and tend to be ovate. In the mature female the first and second of these parapodia have dorsal 

 cirri modified as voluminous seminal pouches ; well-developed parapodia appear after the first seven 

 to ten feet, each with a broadly foliaceous dorsal cirrus, a smaller ventral foliaceous cirrus and a long 

 pedal lobe with projecting acicula, cirriform appendage and long compound chaetae with short terminal 

 articles. There is some variation in the position of the pigmented segmental glands on the body. In 

 all mature females and in most other specimens they begin at the fourth foot and continue up to the end 

 of the body, but in a number of specimens they appear first between the seventh and twelfth foot. 

 There appears to be no pattern in this variation, specimens from the same station showing both conditions , 

 and it is probably due to the strength of the pigment in particular glands surviving preservation. 



Discussion. Most modern authors describe this species with four pairs of tentacular cirri, although 

 Hering (1892, as Alciopa Candida) clearly demonstrated that it has only three. Fauvel (1935) first drew 

 attention to this possibility of error, in describing Vanadis augeneri Benham, from Annam, and this 

 has been substantiated in recent studies (Stop-Bowitz, 1948). I have re-examined the type specimens 

 of V. augeneri (Benham 1929, (B.M.(N.H.), Reg. no. 1929.9.20. 1) from 'Terra Nova', Sts. 123-213 and 

 they are identical with the above description of V. crystallina. Neither of them are mature females. 



Monro (1930) reported specimens from 'Discovery', Sts. 85 and 287 as V. formosa (B.M.(N.H.), 



