CARCINOLOGICAL STUDIES, 263 



of the third pair measure almost a third, those of the 

 fourth pair a fourth aud those of the fifth pair a fifth 

 of the lencfth of their propodites. The dactylopodites of the 

 third and fourth pair are armed along their inner margins 

 with four or five spinules which gradually increase in length, 

 those of the fifth pair, also agreeing with those of Car. 

 Weberi^ are provided along their inner margin with 50 — 

 60 spinules, the five or six foremost of which slightly be- 

 come thicker and are a little more than three times as 

 long as broad at their base. This Japanese Caridina is , 

 consequently, most closely allied to Car. Weheri (fig. 8 and 

 8'») and must, perhaps, even be regarded as a mere local 

 variety of it, the principal difference being the more pro- 

 foundly excavated carpus of the anterior legs. 

 Car. denticulata de Haao , however, that likewise inhabits 

 Japan, is certainly a different species. The rostrum reaches 

 to the end of the peduncle of the upper antennae , and 

 the distal third of the upper margin is described as entire. 

 De Haan says that the carpus of the anterior legs is simi- 

 lar to that of Car. typus, but in his figure the wrist of 

 these legs appears longer and scarcely excavate , so that 

 in my opinion this species presents a much greater resem- 

 blance to Car. laevis Heller from Java. 



15. Hippolyte ponape7isis Ortmann. 



Hippolyte ponapensis, Ortmann, Die Decapoden-Krebse des Strass- 

 burger Museums, in: Zoolog. Jahrbücher, Abth. fur System., Geogr. 

 und Biologie der Thiere, Bd. V, 1890, S. 502; Taf. 3G, fig. 20, 20d. 



This species is certainly identical with Hetai- 

 rocaris orientalis de Man (Notes from the Leyden Museum , 

 Vol. XII, 1890, p. 122; pi. 6, fig. 16). Ortmann founded his 

 species upon a male and a female from the Carolines , Po- 

 napé: the two ova-bearing females described by me, were 

 likewise collected at the isle of Ponape. The paper in 

 which I published my description, was issued at Ley- 

 den in April 1890, whereas Ortmann's paper was pu- 



Notes from the I-.oyden MrTseiim, Vol. XIV. 



