64 CARCINOLOGICAL STUDIES. 



long as the dactylopodites; the upper margins of the mero- 

 aud of the carpopodites are aiuned with a spiniform tooth 

 at the distal end. The hairs which are found on these legs 

 are also partly pinnate. 



Pilumnus tahitensis is closely allied to Pilumnus vestitus 

 Haswell from Port Jackson (vide Miers, Challenger Ex- 

 pedition, Brachyura, p. 159, PL XIV, fig. 3), but is dis- 

 tinguished at first sight by the remarkable struc- 

 ture of the fingers. 



Dimensions : cf 9 



Breadth of the cephalothorax , lateral 



teeth included lO^^/g mm. 10 mm. 



Length of the cephalothorax .... 7~/, » T^/g » 

 Distance between the external orbital 



angles 7^/2 » 7^/- » 



12. Trapezia guttata Riipp. (Heller). 



Trapezia guttata Riippel, Heller, in : Sitzungsber. Kais. Acad, der 

 Wissensch. in Wien, Bd. XLIII, p. 351. 



Trapezia guttata , Miers , Report on the Challenger Brachyura , 

 1886, p. 166, PI. XII, fig. 1. 



Two specimens, male and female, from Samoa. 



Quite as in the specimens described (I.e.) by Miers, 

 also in our specimens the ambulatory legs alone are 

 marked with small red spots. The cephalothorax is a little 

 broader in proportion to the length than that of Trapezia 

 cymodoce Herbst. 



Our species is also distinguished by the frontal teeth 

 being but little developed and by the glabrous outer surface 

 of the hands. 



The lateral teeth of the cephalothorax are sharp and 

 acute as in Trap, cymodoce:^ the hands are much compressed 

 and their upper margin is rather sharp , not rounded. 



Dimensions : cT Q 



Breadth of the cephalothorax , distance 



between the lateral teeth. . . . 12-''//, mm. 12^/^ mm. 

 Length of the cephalothorax . . . lOYr, » 9^'^ » 



Notes from the Leyden IMuseum, "Vol. XII. 



