SYSTEMATIC ACCOUNT 199 



Description. This spindle-shaped species measures up to 31 mm. in length by 4-6 mm. wide for 

 twenty-two segments. The median dorsal caruncle, situated between the peristomium and the first 

 parapodia, is in the shape of a V with the posterior portion not attached to the body surface, and with 

 two long characteristic finger-shaped nuchal processes on either side, directed posteriorly (Text-fig. 

 13c, p. 197). These nuchal lobes curl around the caruncle anteriorly and almost meet; posteriorly they 

 may reach to the fourth parapodia. Cirri on the first three segments are reniform; on succeeding 

 parapodia they are almost square becoming lanceolate posteriorly. Anal cirri are lanceolate with a 

 supporting central rib. 



Discussion. I have re-examined Monro's (1930) specimen of Sagitella cornuta, from 'Discovery', 

 St 258 (B.M.(N.H.), Reg. no. 1930.10.8.1067) and consider it to be Travisiopsis lanceolata. Some of 

 Ehlers's 191 3 material of Sagitella cornuta is clearly Travisiopsis lanceolata but his 19 12 material, 

 named S. cornuta, is T. lobifera. 



General distribution. T. lanceolata is well known from the Atlantic Ocean where it probably has its 

 southern limit of distribution at the Sub-Tropical Convergence (see p. 246). 



Travisiopsis coniceps (Chamberlin), 1919 

 Type locality. 5 11' S., 98 56' W., off Galapagos Islands. 

 Sagittella lobifera Ehlers, 1912, pp. 24-5, pi. 3, figs. 1-4. 

 Plotobia coniceps Chamberlin, 19 19, pp. 156-7, pi. 66, figs. 2-4. 

 Nuchubranchia palmata Treadwell, 1928, pp. 481-2, figs. 66-8. 

 Sagitella lobifera Monro, 1930, p. 90. 

 Sagitella lobifera Monro, 1936, pp. 122-3. 

 Sagitella lobifera Monro, 19396, p. 108. 

 Travisiopsis coniceps Stop-Bowitz, 1948, p. 61. 

 Travisiopsis coniceps Stop-Bowitz, 195 1, pp. 11-12. 

 Travisiopsis coniceps Hartman, 1956, p. 277. 



Description. This species is cylindrical in shape and measures between 18 and 30 mm. in length by 

 4-6 mm. wide, for twenty-two segments. In the median dorsal line, between the peristomium and the 

 first parapodium, is the backwardly directed, tongue-shaped caruncle with characteristic pinnate nuchal 

 lobes on either side (Text-fig. 13 d, p. 197). The single cirri on the first three segments are heart-shaped, 

 thereafter parapodial cirri are broadly foliaceous. Two or three aciculae project from between the 

 parapodial lobes from the sixth foot posteriorly. Anal cirri are long and spatulate with a central rib. 



Discussion. As Stop-Bowitz (1948) has pointed out the name lobifera is preoccupied in the genus 

 Travisiopsis by Levinsen's species; the next name available is coniceps. I have re-examined the 

 holotype of Sagittella lobifera (sic) Ehlers, 1912 (B.M.(N.H.), Reg. no. 1911.11.1.87) from 68° 52' S.. 

 178 15' E., and it is identical with Travisiopsis coniceps. In addition, I have examined the following 

 specimens and consider them all to be T. coniceps: 



(a) From Treadwell, 1928, as Nuchubranchia palmata, in the collection of the New York Zoological 

 Society, by courtesy of Dr Beebe. 



(b) From Monro, 1930, as Sagitella lobifera, 'Discovery', Sts. 78, 85, 100 (B.M.(N.H.), Reg. no. 

 1930.10.8.1018:1162:1177, respectively). 



(c) From Monro, 1936 as S. lobifera, 'Discovery', Sts. 395, 590 (B.M.(N.H.), Reg. no. 1936.2.8. 

 1182-1189 and 1190-1191 respectively). 



(d) From Monro, 19396, as S. lobifera, B.A.N.Z.A.R.E., Sts. 27, 45, 96 (B.M.(N.H.), Reg. no. 

 1941.3.3.3948/53. 



General distribution. Travisiopsis coniceps has been widely reported from the South Atlantic Ocean 

 but never in large numbers (see p. 245). 



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