288 DISCOVERY REPORTS 



Oph/ocetitrus novae-zelandiae, Gislen, 1926. On the generic types of the Ophiurid genus Ophio- 

 centrus Ljungman (Amphiocnida Verrill). Goteborgs K. Vetensk. Vitterhets-Samhiilles 

 Handlingar, xxx, 6, p. 13. 

 St. 939. 17. viii. 32. 35° 49' S, 173° 27' E, Cook Strait, New Zealand, 98 m. i young specimen. 



Whereas it is clear, as shown by Gislen {op. cit.), that the genus Amphiocnida of 

 Verrill is identical with Ljungman 's genus Ophioceninis, it can hardly be regarded as 

 definitely settled that the New Zealand form is really specifically different from the 

 typical pilosa, from the Bass Strait ; it is, accordingly, with due reservation that I am 

 here following Gislen in regarding the New Zealand form as a separate species. Com- 

 parison with material from the type locality will be needed for deciding the question of 

 the specific validity of the New Zealand form. I rather expect, judging from the great 

 variability existing in the New Zealand form (cf. op. cit., 1924), that they will prove to 

 be all one species. 



The present specimen (2 mm. diameter of disk) shows an interesting feature in 

 having two slender spines on the distal edge of the buccal shields. If this proves to be a 

 constant character, the present specimen would represent a species different from those 

 from the Colville Channel described in my paper of 1924, in which no such spines were 

 observed. But I have little doubt that this is merely an individual variation. 



Amphiodia affinis (Studer) 



Amphiura affinis, Studer, 1885. Die Seesterne Siid-Georgiens. Jahrbuch wiss. Anst. Hamburgs, 



n, p. 162, Taf. ii, fig. 9 a, b. 

 Ophioceramis antarctica, Studer, 1885. Ibid., p. 160, Taf. ii, fig. 7 a, b. 

 Amphiophis affifiis, Koehler, 1917. Echinodermes de Kerguelen, Ann. Inst. Oceanogr., vn, 8, 



p. 69, pi. viii, figs. 10, II. 

 A. affitiis, Koehler, 1923. Swedish Antarct. Exped. Asteries et Ophiures, p. 115. 

 Amphiactis affinis. Hertz, 1926. Deutsche Siidpolar-Exped. Ophiuroiden, p. 27, Taf. vi, fig. 3. 



St. 45. 6. iv. 26. 27 miles S 85° E of Jason Light, South Georgia, 238-270 m. i specimen. 



St. 141. 29. xii. 26. E. Cumberland Bay, South Georgia, 17-27 m. 7 specimens. 



St. 179. 10. iii. 27. Melchior Island, Schollaert Channel, Palmer Archipelago, 4-10 m. i specimen. 



To the very careful description of 

 this species given by Koehler {op. cit., 

 1917), one point of importance should 

 be added, viz. that the genital slits are 

 quite short, not reaching beyond the 

 first arm joint (Fig. 23). I have been 

 able to ascertain this also in the type 

 specimens, Studer's original material 

 having very kindly been lent me for 

 re-examination from the Hamburg 

 Museum. It appears that the tentacle 



scale is often lacking at the first pore pair. Fig. 23 . Amphiodia affinis (Studer). Part of oral side. X 20. 



