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Zoology Publications from Victoria University of Wellington—Nos. 54 to 57

Addendum

Addendum

Since the above manuscript was submitted for publication we have examined another three females and three males of H. perlo from New Zealand. All were taken by the Fisheries Research Division's trawler "James Cook" in 130–150 fathoms off the north-west coast of New Zealand, between Cape Reinga and Cape Farewell. The females were 905, 935 and 1395 mm total length, and the males were 640, 818 and 980 mm. Dimensions of these specimens given in the same order, and corresponding with columns B-F in Table 1, are:—

B, 68.7, 54.9, 70.6, 85.4, 83.0, 80.9; C, 50.2, 52.2, 51.9, 49.7, 50.0, 51.5; D, 54.9, 55.6, 56.3, 55.1, 55.4, 56.7; E, 41.6, 42.8, 43.9, 40.6, 40.3, 41.5; F, 13.3, 12.8, 12.4, 14.5, 15.1, 15.2.

Mean values of these data for females and males respectively, followed by a figure in parentheses expressing how the females differ from the males, are: B, 64.7, 83.1 (- 18.4); C, 51.4, 50.4 (+ 1.0); D, 55.6, 55.7 (- 0.1); E, 42.8, 40.8 (+ 2.0); F, 12.8, 14.9 (- 2.1). The sexual dimorphism illustrated by these additional data conforms very closely with that we report in the present account.