. Fig- 53- Parharpinia rotundifrons, a. Dorsal view of head. b. Pleon segments 3 and 4. Description 2. Differing from the preceding species as follows. Hood broadly rounded in front. Pleon segment 3 with postero-inferior angle produced in a rather narrowly rounded lobe, slightly concave on its upper margin which bears 3-4 minute spinules. Gnathopods 1 and 2, proportions of 5th joint to 6th intermediate between obliqua and villosa (as figured by Tattersall), in gnathopod 1, 5th joint is three-quarters length of 6th, in gnathopod 2 half its length. Peraeopods 3-5 as in sinuata, but an
. Fig- 53- Parharpinia rotundifrons, a. Dorsal view of head. b. Pleon segments 3 and 4. Description 2. Differing from the preceding species as follows. Hood broadly rounded in front. Pleon segment 3 with postero-inferior angle produced in a rather narrowly rounded lobe, slightly concave on its upper margin which bears 3-4 minute spinules. Gnathopods 1 and 2, proportions of 5th joint to 6th intermediate between obliqua and villosa (as figured by Tattersall), in gnathopod 1, 5th joint is three-quarters length of 6th, in gnathopod 2 half its length. Peraeopods 3-5 as in sinuata, but anterior margin of peraeopod 4 more strongly convex. Family AMPHILOCHIDAE Barnard, 1916, p. 143; 1930, p. 337. Schellenberg, 1926, p. 301; 1931, p. 92. Genus Gitanopsis, G. O. Sars. Stebbing, 1906, p. 153. Barnard, 1916, p. 144. Schellenberg, 1926, p. 301; 1931, p. 95. Gitanopsis antarctica, Chevr. Chilton, 1912, p. 479. (Amp/iiloc/iits squamosus, nun Thorns.) Chevreux, 1913, p. 104, figs. 13-15. Schellenberg, 1926, p. 301. (Amphilochus squamosus, non Thorns.) Occurrence: St. MS 67. South Georgia. 1 ovig. 2 4 mm. Remarks. Although Chilton has united antarctica with the New Zealand Amphilochus squamosus, and Schellenberg has accepted this, I think it better to suspend judgment for the present. No detailed modern figures of the New Zealand form have been given, and the uniting of the two forms rests on the individual opinion of one author: " I cannot find any character of importance. .". (Chilton, 1923, Trans. Inst. LIV, p. 240.) Another reason for not following Chilton is that he also included marionis, Stebb., in the synonymy, to which Schellenberg, quite rightly in my opinion, does not subscribe.
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