14 r. TSTITKAWA. 



ton teetli. Tlie sorond endite nearly twicG as larj^o as the tliird ; and tlie 

 Ibnrtli smaller than the third. 'J'he filth endite is narrower but hiohor than 

 the fonrth, and the sixtli relatively narrow and short. The palpilbrm 

 apx)enda.c;e of the filth endite found in the leos of Estheria is very short here, 

 l>ein,£,f represented by a small eonieal projection with two short setae npon it. 

 r>oth the ends of the flahellnm, as well as the ])ranchia' relatively smaller. 

 Tn the succeeding pairs of loos, the first endite remains relatively of larpje 

 si/e and well developed, while the sixth endite (?), the upper and the lower 

 ends of the flabellura too-ether with the branchial lobe relativel}- larger than 

 the other parts of the Ipg as compared with the same parts of the fn-st leg. 

 The upper end of the tlagellum of the ninth, tenth and the eleventh prolonged 

 to form the ovigers, the longest of which l:)eing found on the tenth leg, the 

 shortest on the eleventh. The branchia is present till to the ninteenth leg 

 inclusive, the last three legs being devoid of branchial sac, and the upper end 

 of the flabellum is wanting in the last two (see Fig. 9), the last pair of legs 

 being provided with well developed six endites and the lower end of the 

 flabellum which is here relatively of large size. 



The post abdomeii iV\'^. 10) rather l)road with about twenty strong 

 spines of unequal sizes on the upper side, the five anterior of which being the 

 largest and situated in IVont of the usual long forked filaments, each of which 

 l)eing sparingly feartherd, and finely toothed on their posterior concaxe sides. 

 ''IMie rest of the spines are placed close to each other and provided with teeth 

 on both their anterior and posterior sides ; the terminal spine is also finely 

 toothed on its dorsal side. 



The caudal appendages slightly curved, beset with two hair-like setae on 

 thc^ basal poi-tion of their dorsal edges, and with a row of about sixteen spines 

 of u)iequal length on the basal two-third of their entire length, while the 

 terminal fourth is again finely serrated. 



The antero-]v->sterior diameter of the carapace of about fi mm. ; the 

 do)'so-venti-al diametei-, (> mm. ; and the dextro-sinistral diameter, 2 mm. 



'^riiis l)eautiful s]-)ecies was collected by Mr. TTisatomo Nakagawa, a 

 teacher of Zoology in the KotogakkO at Kumamoto, in a small pool of cleaj' 

 Watier in the inountains of NikkO, in the province of Shimotsuke, about; 



