1 



46 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi.: 



two-thirds the size, from Mororan. The sixth segment is three-fifths 

 as long as the carapace, and four-lifths as long as the telson. Telson 

 shorter thanWopods, of which the inner is shorter than the outer; '■ 

 lateral spines 3 or 4. 



DJuK'nsions. — Female with ova; Length (iO.l mm., length of carapace 

 and rostrum 21.8 mm., length of rostrum 11.4 nun. 



PLATYBEMA PLANIROSTRE ( de Haan). 



Lysmata planirostris de Haan, Fauna Japoii., Crust., pi. O.*^' 

 Hippolyte plmiirostris iiF^tlAA^, Fauna Japoii. , Crust., pi. xlv, fig. 7." 

 Cyclorhynchus planirostris deH-Wth, Fauna Japon., Cruwt., 1849, p. 175. 

 Rhynchocyclus planirostris Stimpson, Proc. Acad. Nat. Sci. Phila., XII, 1860, 



p. 27 [96].— MiERS, Proc. Zool. Soc. London, 1879, p. 55. 

 Rhynchocyclus mucrowitus Stimpson, Proc. Acad. Nat. Sci. Phila., XII, ISfid, 



p. 28 [96]. 

 Platyhcma planirostris 13 ate. Challenger Macrura, 1888, p. 578. 



Hakodate, Hokkaido; 2 females with ova. 



In both these specimens the posterior median spine is rudhnentarv, 

 being present in the shape of a smooth rounded lobe. In the only 

 specimen provided with a rostrum, the teeth above the point number 

 15, those below^ 1'2. Anterior margin of carapace behind the antennjv 

 armed with about S» pectinated spines. Antennal flagellum nearl}^ as 

 long' as body. The carpus of the first pair of feet is not carinate 

 above, and is provided with a tooth at the upper distal end. Carpus 

 of second pair triarticulate, first and third articles equal, both together 

 nearly as long as second. 



Family PANDALID.E. 



PANDALUS HYPSINOTUS Brandt. 



Pandalus hypsinotiis Brandt, in Middendorff's Reise in den iiussersten Norden 

 und Osten Sibiriens, II, Zool., I, 1851, p. 125. 



Mororan, Hokkaido; one young specimen about 25 mm. long. This 

 localit}^ is an extension of the range, the species having a distribution 

 from Bering Sea southward, on the one hand to the Straits of Fuca 

 and on the other to the Kurile Islands. 1 



A figure will l>e given in the forthcoming report on the Decapoda 

 of the Harriman Expedition. 



PANDALUS LATIROSTRIS, new species. 



Carapace and rostrum as long as the abdomen, lacking one-fourth 

 of the telson. Rostrum one-third longer than the carapace, basal half 

 horizontal, terminal half slightly ascending, broad at base, gradually 

 tapering, a prominent smooth lateral carina. Dorsal carina arising at 

 the middle of the carapace, armed with a series of 16 to 18 movable ; 

 spines, of which 4 or 5 are behind the orbit, the posterior spine at 



« Generic name changed in Errata. 



