LARVAE OF DECAPOD CRUSTACEA 423 



the eye, which he interpreted as the rostrum. I do not find this structure as prominent 

 as he figures it, but it is quite possible that it may be the forerunner of the rostrum. 



Fig. 29. Jasiis lalandii, Stage XIII ?, 37 mm. St. 100 B. 



Distribution. 



Table IX shows the distribution of seventy-one specimens. The most northerly 

 station is 268 (18° 37' S) and the most southerly is 448 (39° 03' S) ; but the majority were 

 taken in the region of the Cape and between the Cape and Tristan da Cunha, where the 

 adult is known to occur. Apart from St. 247, which is close to Tristan, it was not taken 

 to the west of that point, nor in the neighbourhood of Gough Island. The area of distri- 

 bution is therefore restricted, and seems to correspond closely with the limit of the 

 subtropical convergence. The smallest individuals, of lo-ii mm., are extremely rare, 

 but it is worth noting that one of them (St. 85) was taken about 900 miles from the nearest 



