OCR Text |
Show 3 2 0 DR. H. J. HANSEN ON THE [N o v . 2 9 , Abdominal shield.- Lateral margins 11 irregularly serrate," " ending posteriorly in a sharp point followed by a small concave indentation" ; the posterior margin almost as in S. mediterraneum; its middle portion is somewhat produced, so that a rather low rounded lobe or protuberance is formed, and almost each lateral half of the margin is somewhat concave. Uropoda, according to fig. 3 f , much less than half as long as the abdominal shield ; endopod considerably longer than exopod. Length " about i- 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 8. armatum Hasw. by a shorter process from the basal joint of the antennse, by the serration of the lateral margins and the shape of the posterior margin of abdomen, and by the extreme depth of the prehensile hand in the sex described. 3. Sten e tr ium m e d it e r r a n e um , 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 moderately 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. Antennulfe 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 shorter than the peduncle, with about nine joints. Antennae 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 setae 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 set*; lower margin 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, |