404 



Transactions. 



wards and outwards, with a very small spine immediately at their bases ; 

 post-orbital spines smaller than supra- orbital, and each with a stiU smaller 

 spine behind. 



The rostrum is small, and is bent down towards the antennular peduncle, 

 which it does not reach, however, and is slightly upturned at the tip. The 

 clasping processes are not visible. 



The abdominal pleura end in a point projecting downwards and back- 

 wards, and have a smaller tooth projecting from the posterior border. 



The pattern of the spines on the telson (fig. 5) is as follows : Behind the 

 anterior border of the telson there is a submedian pair of large spines. 



Y-X 



V : : y 



V k 



Fig. 5. — Telson of pueruhis of Jasus lalandii, showing the arrangement of 



the spines. X 9. 

 Fig. 6. — Pleopod of puerulus of Jasus lalandii. a.i, appendix interna. 

 Fig. 6a. — Appendix interna of pleopod of puerulus of Jasus lalandii 



(M.-Edw.), showing coupling-hooks (c). 



behind which is a double median row of small spines running back to near 

 the posterior end. Behind the fii-st pair, and wider set, is a second pair, 

 these being followed by a third pair. The edges of the telson and uropods 

 are deeply serrated. 



The pleopods (figs. 6, 6a) have an appendix interna armed at the tip 

 with small, strongly curved coupling-hooks. 



-The 3rd maxillipedes are sparated at the base ; the antennal peduncle 

 is longer than the peduncle of the antennules. There is no trace of thoracic 

 exopods. 



The colour in alcohol is creamy white. 



Length, 30 mm. 



Xoc«i«^^.— Stewart Island. 



Puerulus oj Jasus hiigelii (Heller) (fig. 7). 



This larva is smaller than the preceding, being only 20 mm. long 

 The carapace is of the same shape as that of the Stewart Island pureuli, 

 except that it has stronger lateral angles, and has only supra-orbital 

 and post-orbital spines ; the fairly large rostrum projects straight to the 

 front. 



