320 DR. H. J. HANSEN ON THE [NoV. 29, 



Abdominal shield. — Lateral margins " irregularly serrate," 

 " ending posteriorly in a sharp point followed by a small concave 

 indentation"; the posterior margin almost as in 6'. medite^Taneum ; 

 its middle poi'tion is somewhat produced, so that a rather low 

 i-ounded lobe or protuberance is formed, and almost each lateral 

 half of the margin is somewhat concave. 



Uropoda, according to fig. of, much less than half as long as 

 the abdominal shield ; endopod considerably longer than exopod. 



Length " about ^ inch." 



Occurrence. Lyttelton Harbour, New Zealand. 



Remarks. Chilton supposes that his specimen was a female ; 

 judging from the extreme depth of the prehensile hand, I think it 

 was a male. It is distinguished from S. armatum Hasw. by a 

 shorter process from the basal joint of the antennae, by the 

 serration of the lateral margins and the shape of the postei-ior 

 margin of abdomen, and by the extreme depth of the prehensile 

 hand in the sex described. 



3. Stenetmum meditebraneum, sp. n. Adult male and ovigerous 

 female. (Plate XIX. figs. 2 a-2 h.) 



Head has its upper surface — the frontal plate excluded— not 

 fully twice as broad as long ; the lateral part is strongly expanded 

 and flattened, the lateral corner produced into a rather long acute 

 process without distinct tooth on the outer margin; the front 

 margin outside the base of each antennula produced into a mode- 

 rately small, triangular, acute process. Eyes long, oblique, rather 

 narrow but broader behind than in front ; their outer margin is 

 strongly convex, the inner concave ; posterior part of their outer 

 margin rather close to the lateral margin of the head. 



Antennulse have the second joint of the peduncle moderately 

 slender and a little shorter than the third ; flagellum in the male 

 somewhat shorter than the peduncle, with eleven or twelve joints, 

 in the female considerably shoi'ter than the peduncle, with about 

 nine joints. 



Antennse have the basal joint, seen from above, at the outer 

 side produced into a long, rather narrow, acute process reaching 

 far beyond the distal end of second joint ; external margin of the 

 process with a couple of long set^e inserted at a minute saw-tooth 

 in front of the middle. 



First thoracic legs rather similar in both sexes, of moderate 

 length. Third, fourth, and fifth joints with the upper part 

 strongly expanded, compressed ; the expansion begins rather near 

 their base, and is in front produced into a triangular acute process, 

 which is rather broad and moderately long on third and fourth 

 joints, somewhat longer and much narrower on the fifth. In the 

 male the hand is somewhat less than twice as long as deep ; upper 

 margin somewhat convex, with a few shorter setse ; lower mai-gin 

 as long as the depth, straight, with numerous very long hairs ; 

 the angle between lower margin and palmar edge measures about 

 120°; palmar edge is a little sinuate, with a moderately large. 



