280 Mr. C. Spence Bate on the 



condition, being apparently an animal that had but recently 

 shed its skin. 



Pentacheles auriculatus, n. sp. 



Carapace with the lateral margins nearly parallel ; anterior 

 division with five teeth, median with three, and posterior with 

 five or six; frontal margin with two long rostriform teeth 

 near the centre, and one small one above the inner angle of 

 the orbit. Median dorsal ridge strongly denticulated on 

 the anterior portion, and having two double spines on the poste- 

 rior, and a single tooth on each side of the median line on the 

 posterior margin. Pleon carinated, with the ridge on the 

 third and fourth somite produced to a long anteriorly curved 

 sharp point. Anterior pair of pereiopoda with meros smooth 

 on the inner surface and one tooth on the outer near the base, 

 and one near the apex ; posterior pair chelate, with unequal 

 dactyla. Coxal plates ridged with markings like small ears. 



Taken in lat. 19° 10' S., long. 178° 10' E., at a depth of 

 610 fathoms, off Fiji, on a bottom of GloMgerma-ooze. 



Pentacheles enthrix (Willemoes-Suhm, MS.). 



Carapace with lateral margins slightly convex; anterior 

 division with eight teeth, median with four, and posterior with 

 twelve or fourteen. Frontal margin with two rostriform 

 teeth, and a few unequally small teeth between them and the 

 orbital notch ; a few single and double teeth along the median 

 dorsal ridge, two on the central median ridge, and three on 

 each side of the median ridge on the posterior margin. Pleon 

 dorsally carinated and evenly cusped. Anterior pair of pereio- 

 poda with two spines on the outer side of the meros ; posterior 

 pereiopoda evenly chelate. 



Taken in lat. 29° 55' S.,long. 178° 14' W., on hard bottom, 

 at a depth of 520 fathoms, and in lat. 19° 10' S., long. 179° 

 40' E., at a depth of 315 fathoms. 



Willemoesia leptodactyla. 



Willemoesia leptodactyla, Willemoes-Sulim, Linn. Soc, Trans, vol. i. 

 2nd ser, p. 50, pi. xiii. figs. 1-9. 



Carapace with the lateral margins subparallel or slightly 

 convex ; anterior division with six teeth, median with four, and 

 the posterior with fifteen. Frontal margin with slight orbital 

 notches, and a single rostriform tooth in the centre. Median 

 dorsal ridge armed with a few sharp teeth. Pleon carinated, 

 each of the five outer somites having a sharp anteriorly 



