-II 10 COPEPODA. 



long spiniform seta springs from the inner margin and 

 near the base of the curved terminal appendage (PL XV. 



%. 9)- 



The second maxillipeds are moderately stout, two-jointed, 



and armed with a stout terminal eiaw; they resemble the 

 second maxillipeds of Lichomolgus liber, Brady & Robertson 

 (PI. XV. fig. 10). 



The thoracic leet are somewhat similar to those of Ilcr- 

 mannella rostrata, Canu, but are scarcely so stout. The fourth 

 pair, which are represented by figure 16, PI. XII., are of 

 moderate length ; both branches are three-jointed and some- 

 what slender, but the inner branches are rather more slender 

 than the outer. The first two joints of the outer branches 

 have each a small dagger-shaped spine at the distal end of 

 the exterior margin, while the third joint has a similar spiue 

 near the middle of the outer edge and one small and one 

 large spine at the apex. Moreover, the second joint bears 

 one, and the third joint five moderately long and plumose 

 setae on the inner margin, arranged as shown in the drawing 

 (PI. XVI. fig. 12). 



The fifth pair are very small; each consists of a single 

 joint which is provided with two small terminal setae (PL XIX. 

 fig. 5 a). 



The abdomen is moderately slender and composed of four 

 segments ; the genital segment is somewhat dilated, and is 

 about equal in length to the next three segments taken 

 together, the second and third are small, but the fourth 

 is rather longer than the one which precedes it. 



The furcal joints are about twice as long as the last abdo- 

 minal segment ; each is furnished with several terminal setae, 

 while a single very small seta springs from near the middle of 

 the omer margin. No male was observed. 



Habitat. Plymouth Sound, among Hydrozoa, &c. near 

 low-water, August 1003 ; apparently rare. 



Remarks. This small species, of which only a single female 

 specimen was observed, resembles a diminutive Pseudan- 

 tliessius (/racilis, but the structure of the fourth pair of 

 thoracic, legs snows that its relationship is with Canu's 

 ffermannella ; it differs, however, from any Hermannella 

 hitherto described by the form of the mandibles, the propor- 

 tional lengths of th abdominal and furcal joints, as well 

 as by other structural details shown by the drawings. 



