1028 ON THE PYCNOGONIDA OF THE AUSTRALIAN COAST, 



AmmOthea longicollis, n. sp. 



[PI. LVI., figs. 1-4. 



The body of this s])ecies is rather long and slender, the " neck," 

 or portion intervening between the point of inseition of the second 

 pair of appendages and that of the third, about half the length of 

 the rest (exclusive of the abdomen.) The intersegmental lines are 

 vei'y distinct. The lateral processes are not in contact with one 

 another, but not very wide apart, those of the third pair of 

 appendages being more widely separated from the fourth than any 

 of the following pairs are from one another. The proboscis is 

 very large, as long as the neck and first segment, long oval, with the 

 ends somewhat pointed. The abdomen is narrow cylindrical, 

 notched at the extremity, equal in length to the last two segments. 

 The first pair of appendages are very small, scarcely one-third of the 

 lengtli of the proboscis ; the first joint is narrow, slightly incurved, 

 rather broadei' distally than proximally ; the second is ovate, about 

 one-fourth of the length of the first. The second })air of appendages 

 are about four and a-half times the length of the first, and are 

 longer than the proboscis ; the first joint is short and thick ; the 

 rest slender, the second very much the longest, thicker at the distal 

 than at the proximal end ; the third about a quarter of the length 

 of the second, the fourth two-thirds of the length of the second, the 

 fifth very short ; the sixth nearly half of the length of the fourth ; 

 the seventh equal in length to the sixth ; the eighth a little shorter, 

 and the ninth shorter still ; the ninth joint is ornamented with a 

 few short hairs. The basal joint of the third pair of appendages 

 is small ; the second twice as large as the first, curved ; the third 

 rather smaller than the second ; the fourth twice as long as the 

 third ; the fifth rather shorter than the fourth and more slender 

 towards the proximal end ; the sixth nearly two-thirds of the length 

 of the fifth ; the seventh about equal to the sixth ; the eighth rather 

 smaller, the ninth and the tenth nearly equal in length ; the last 

 four segments are ornamented with pinnate hairs ; the last termi- 

 nates in a curved claw. The fourth, fifth, sixth and seventh pairs 



