FEOM THE INLAiN'D SEA OF JAPAN. 411 



fhree times as long as broad, the palm being I'l mm. long and 1'3 mm. broad in the 

 middle. The slender fingers, whieli shut close together, are 4'25 mm. long ; the dactylus 

 carries two, small, equal, obtuse teeth near one another (PI. 32. figs. 29, 30), the anterior 

 of which is situated at one-fifth the length of the finger from the articulation; just 

 opposite tlie middle between both teeth the immobile finger carries one single, somewhat 

 smaller, subacute tooth ; the finger-tips are strongly curved inward. 



The three following legs are very slender : those of the third pair reach with their 

 dactyli beyond the scales, those of the fifth even with oue-third of their propodites. 

 The propodites of the fifth pair, e. g., are S'-k mm. long and 32 mm. broad in the 

 middle, twenty-five times as long as broad; they thicken somewhat at the distal end and 

 are beset with a few spines on their distal half. The slender, tapering dactyli of the 

 fifth pair measure little more than one-fourth of the propodites, viz. 2-36 mm. " 



The very numerous eggs are small, 0'6-0-7 mm. Jong and 0'45-0'5 mm. broad. 



Two specimens, collected near Amoy, China, were {I. c.) wrongly referred by me in 

 1881 to Leander longirostris (Milne-Edwards, Hist. Nat. Crust, ii. p. 391) : as is proved 

 by the examination of one of them, now lying before me through the kindness of the 

 Direction of the Leyden Museum, they belong in fact to L. longipes, Ortm. In 1881 

 the words of Milne-Edwards's description, " surmonte a. sa base d'une crete sexdentee," 

 were misunderstood or overlooked by me. As has been shown by Miss Rathbun, 

 I. c. pp. 50 & 51, the species described by Milne-Edwards, /. c. p. 391, under the name 

 of longirostris should henceforth bear that of shjliferus, M.-Edw. 



In my opinion, however. Miss Rathbun was wrong when creating for L. longipes, 

 Ortm., the name ortmanni, because this species belongs to the genus Leander ; de Haan's 

 longipes, however, to the genus PalcBmon. In that case the species mentioned by the 

 learned carcinologist of Washington under the name of Fat. japonicus (Ortm.) should 

 also be changed, because a " Bithynis " japonica has been described by de Haau. 



Geographical Distribution. — Japan, Sagami Bay {Ortmann). 



SPIRONTOCARIS, Sp. Bate. 



Spirontocakis rectirostris (Stimpson). (PI. 32. figs. 31-31.) 



Hippolyte rectirostris, Stimpson, iu Proc. Acad. Nat. Sciences Philadelpliia, 1860, p. 33. 

 Spirontocaris rectirostris, de Man, in Ann. & Mag. Nat. Hist. ser. 7, vol. xvii. 1906, p. 403. 



One male and one egg-laden female from the Inland Sea of Japan. 



The female, which agrees pretty well with Stimpson's diagnosis, was captured in deep 

 water ; as the above were the only specimens caught, it is probably a rare species. Alive, 

 the female was of a Prussian blue, the eggs were orange. The female is 35-5 mm. long 

 from tip of rostrum to end of telson and has a stout shape ; the carapace, rostrum 

 included, measures nearly a third the whole length. The rostrum, which arises with an 

 obtuse crest at one-third the length of the carapace from its posterior border, reaches to 

 the end of the antcnnular peduncle ; the free portion, which measures a little more than 

 half the length of the carapace, projects straight forward. The upper margin carries 

 six teeth, three of which are on the carapace, and the first of these stands just before its 



SECOND SERIES. — ZOOLOGY, VOL IX. 59 



