﻿i6o 



"ENDEAVOUR" SCIENTIFIC RESULTS. 



a 



herein described, display the characteristic end- 

 pecuHarity — perhaps 20 per cent, of them being thus 

 aftt-cted. 



(ii.) The principal acantho- 

 styles attain a maxi- 

 mum size of 160 X 

 12 ti. 



(iii.) The dermal acantho- 

 stvles, owing to the 

 damaged state of the 

 dermal layer, are not 

 with certainty deter- 

 minable in respect to 

 their maximum size. 

 Referring only to 

 those which exhibit 

 the characteristic 



curvature of form, it 

 may be said that the 

 length varies from 60 

 to about 100 n, and 

 that the usual size is 

 about 80 X 7 }i. 



Fig. 30 — C. imnistatis var. 

 pcrraiiiosa. a Oxea. b Prin- 

 cipal acanthostyle. c Dermal 

 acanthostyle. d Isochela ar- 

 cuata of the lar}<er kind. 



Mic rosclc res . — 



The chela? varv in length 

 from 13 to 25 )i. There is an 

 appreciable difference of form 

 between the larger and smaller ; the former are similar to that 

 shown in the accompanying text-figure, the latter bear a closer 

 resemblance to those which are found in the preceding and 

 two following varieties. 



Loc. — Coast of New South Wales, Shoalhaven Bight, 

 15-45 fms. ("Endeavour.") 



Ckei.la ixckust.ws, Caficr^ vay. akf.nacea, Caricr. 



(Plate xxiii., fig. 5, and fig. 31.) 



1885. PlumohaUchoudria areuacea, Carter, Ann. Mag. Nat. 

 Hist. (5), xvi., 18S5, p. 367. 



1896. Phimohalichoudria arenacea, Dend}-, Proc. Roy. Soc. 

 Vict., viii. (n.s.), 1896, p. 43. 



1901. Plumohalichondria australis (pars), Whitelegge, Rec 

 Ausir. Mus., iv., 2, 1901, p. 90, pi. xl., fig. 14b. 



C'hithrid uusiralis, Whitelegge, Luc. cif., p. 90. 



