His -TERRA NOVA K.X PKDIT1ON. 



.-uul fourth pairs of arms. On one of tin- second arms a sucker in a good position for 

 observation showed a crennlated rim, and on one of the third arms similar crenulations 

 v.-ere distinctly split up to form a few broad irregular teeth on distal margin of ring. 

 The tentacles, which measure about 5 mm., have no suckers on the stem, and the 

 cluli is not expanded, or grooved in the centre. The suckers are arranged about two in 

 a row proximally, and about four in a row distally ; all are altout equal in size : some 

 rings appear to be smooth, but are not in good condition. A sucker-ring near the tip 

 shows clearlv at least four teeth on its distal part; about twenty-seven suckers are 

 present on one club. The ventral surface of the head is so injured that only some slight 

 prominences indicate what may have been the site of luminous organs. On the dorsal 

 surface of the head seven luminous organs can be traced. Three are indistinct and 

 form a transverse row across the middle of the head. Above them are four larger and 

 beautifully iridescent organs, two of which are placed at the base of each second arm 

 uist below the fork dividing it from the first arm, the remaining two being placed just 

 below the others, so as to form a line passing between the inner and outer organs of 

 the lower row. No other luminous organs could be. traced on arms or tentacles, all of 

 which have a few reddish chromatophores present on their dorsal snrfa.ee, but none is 

 visible on the mantle. The whole surface is of a greenish discoloured tint, 



Pfeffer ('12, p. 288) separates this from Stigmatoteuthis Imi/li'i ((ioodrich), on the 

 ground that the former has only three luminous organs in the ventral middle line of 

 the head, and that the rings of both arm- and tentacle-suckers have teeth surrounding 

 the entire ring, while N. //in/// has four luminous organs in the ventral median line of 

 the head, and teeth only on the distal half of the sucker-rings of the' arms and tentacles. 



Dixtr'iliution.l? 34' 8., 53 42' E., vertical net to 2,000 in., female (Chun. '10). 



FAMILY CRANCIIIIDAE. 

 17. Pi/rgopsis pacificus (Issel). Fig. 40. 



Zygaenopsis pacifica, Issel, Cef. '' Liguria," p. -2.">, pi. 1U, figs. 3:i-44, 1908. 



Euzygaena pacifica, Chun, " Valdivia " Exp., Oegopsida, pp. 354-356, pi. 52, tigs. 1-3, I'JIO. 



Pyrgopsis pacificus, Pfeffer, Plankton Exp., Oegopsida, pp. 06 1-664, 11(12. 



Station 126, off Three Kings Islands. 34' 13' 8., 172 15' E., surface, square 

 IS-mesh net, plankton, Aug. 24th, 1911. One. 



Station 131), off North Island. New Zealand, 34 30' S.. 171 53' M. surface, square 

 18-me/di net, plankton, Sept. (itli. ID I 1. One. 



Neither of the above is in very good condition. The arms are extremely minute, 

 except those of the third pair, which, in both specimens, measure about three, times the 

 length of the fourth pair. Some suckers belonging to the third arms in the example 

 from Station 1 2(> were examined, and appeared to have smooth rings with papillary 

 area. In the same specimen, the fourth left arm, measuring about I mm., has seven 

 suckers, and the fourth right, five: probably some have dropped ofl, as each arm has 



