550 



Transaction!^. 



Phyllosoma duperreyi Guerin. 



Phyllosoma dwperreyi Milne-Edwards, Hist. Nat., Crust.. 2, p. 485, 1837 ; 

 Gueriii-Meneville, Voy. de la " Coquille," p. 46. pi. 5, fig. 2. 1838 ; 

 Stebbing, Willey's Zool. Eesults, pt. 5, p. 609, 1900. 



One specimen of this larval form was " east iip on Denham Bay Beach, 

 Sunday Island, 31st May, 1908." 



It is 26 mm. long and 18 mm. broad, and agrees closely with the de- 

 scription and figures given in the " Voyage de la ' Coquille.' " 



It is not certainly known to what adult form PhyUosonia duperreyi 

 belongs, but Professor Haswell, in describing the Phyllosoma stage of Ihacus 

 peronii Leach [I. incisus Peron], says that it is not unlikely that Phyllosoma 

 duperreyi is an earlier stage in the development of the same animal (Proc. 

 Linn. Soc. N.S.W., 4, p. 280). His specimen was obtained at Port Jackson ; 

 the original specimen of P. duperreyi was obtained at the same place ; while 

 the one described by Stebbing is from Milne Bay, New Guinea. 



Iconaxiopsis kermadecensis sp. nov. Figs. 1 and 2. 



In general resembling /. andamanensis Alcock, but apparently differing 

 in the following points : The rostrum not quite reaching to the end of the 

 second joint of the antennular peduncle, triangular, margins towards the 

 apex smooth, but with a prominent tooth on each side at the base of the 

 rostrum, a sbght ridge being continued backwards on the carapace from each 

 of these lateral teeth ; slightly further back are 3 smaller teeth closely 

 placed in a transverse row on the carapace, one central and two lateral, 



Fig. 2. 



Iconaxiopsis l-ermadecensis. 

 Fig. 1. Left chelipecL Fig. 2. Right cheliped. 



w-ith slight indications of ridges extending backwards from them. There 

 is a small tuft of long hairs on the inner side of the base of each lateral 

 tooth at base of rostrum, other long hairs fringe the margins of the rostrum, 

 and there are a few scattered hairs on the carapace and abdomen. 



Eyes short, well pigmented. 



The first pair of chelipeds large, longer than abdomen, the left slightly 

 larger than the right, propod in each compressed, with numerous hairs 

 on the upper margin and a well-marked fringe on the lower margin just 

 above a slight ridge which extends almost to the end of the fixed finger, 

 rest of surface smooth ; both fingers sharply pointed ; movable finger 



