STKNHELTA. 145 



Hostrum moderately elongated and slender. Antenntiles 

 moderately slender and composed of eight joints, but the last 

 four taken together are only about half the entire length of 

 the first four, the fifth, sixth, and seventh joints are small, but 

 the fifth is the smallest (PI. XV. fig. 2). The formula shows 

 approximately the proportional lengths of all the joints : 



Proportional lengths of the joints .. 14 . 8 . 6 . 10 . 2 . 4 . 3 . 7 

 Numbers of the joints I 23456 78 



The secondary branches of the antenna? are small, and 

 appear to be three- jointed, but the middle joint is minute and 

 somewhat indistinct (PI. X. fig. 4). 



The first pair of thoracic feet are slender, and the inner 

 branches moderately elongated ; the first joint of the inner 

 branch is about equal to the entire length of the outer one, 

 while the second and third joints are together about equal to 

 half the length of the first joint, but the second is very short 

 (PI. XI. fig-: 3). 



The next three pairs are also slender and elongated. In 

 the fourth pair the inner branches are somewhat shorter than 

 the outer, and a moderately long plumose seta springs from 

 about the middle of the inner margin of each of the three 

 joints, and two similar setse together with a small spine 

 spring from the apex of the third joint (PI. XIV. fig. 2). 



The fifth pair are of moderate size ; the inner portion of 

 the primary joint is elongated, it has a somewhat narrow 

 triangular outline, and is furnished with three setse and two 

 moderately stout spines; the two spines and one of the setse 

 are situated on the inner margin, while the other two seise, 

 spring from the apex of the joint. The secondary joint is 

 moderately narrow, subcylindrical for about three-fourths of 

 its length, then tapers obliquely to the pointed apex ; this 

 joint extends considerably beyond the extremity of the 

 primary one, and carries five seta?, two of which are situated 

 on the distal half of the inner margin, two on the outer 

 margin, and one at the apex (PI. XVIII. fig. 2). 

 The furcal joints are very short (PL XXI. fig. 8). 

 Habitat. Salcombe, collected in 1875 ; and in Mill Bay, 

 Plymouth, among Hydrozoa, collected in August 1903. 



Remarks. - - Stenlielia neglecta resembles S. ima in its 

 general appearance and structure, but it may be readily dis- 

 tinguished by the slender first pair of thoracic feet, and 

 especially by the peculiar form of the fifth pair in the 

 female. 



