REPORT ON THE ANOMURA. 45 



and fifth segments subequal in the female, the median portion with a series of large 

 calcareous plates. 



The only previously well-established member of this genus is Paralomis verrucosus, 

 Dana, from Fuegia. A second as yet undescribed species was taken by the " Talisman," 

 from the deep water of the Bay of Biscay. The Lithodes granulosus, Jacquinot and 

 Lucas, from Fuegia, is probably founded on a young and imperfect specimen of 

 Paralomis verrucosus, but the latter name though issued subsequently must in any 

 case be retained. 



Paralomis verrvAiosus (Dana). 



Litliodes verrucosus, Dana, U.S. Explor. Esped., vol. xiii., Ciust., part i. p. 428, pi. xvi. fig. 16, 

 1852. 

 „ „ Cunuingham, Trans. Linn. Soc. Lond. (Zool.), vol. xxvii. p. 494, 1871. 



Paralomis verrucosus, Stimpson, Proc. Acad. Nat. Sci. Philad., p., 69, 1858. 

 „ „ Miers, Proc. Zool. Soc. Lond., p. 71, 1881. 



1 Lithodes gramdosus, Jacquinot and Lucas, Voy. au Pol Sud, Invert., pi. viiL fig. 15, 1855. 



Habitat. — Specimens of this common Fuegian species were taken in the following 

 localities : — 



Station 316, Port Louis, Falkland Islands ; depth, 4 fathoms ; bottom, mud. A male, 

 with the legs and under surface of the trunk thickly covered by Hydroids. 



Label illegible. A male. 



Port Stanley, Falkland Islands. A large male. 



Paralomis aculeatus, n. sp. (PL V. fig. 1). 



Characters. — The carapace is ovate, with the length (excluding the rostrum) slightly 

 greater than the breadth, the regions well defined, and the surface uniformly covered with 

 spiniform tubercles. The rostrum is trispinose, the two upper spines slightly diverging, 

 directed forwards and upwards, the lower considerably larger and curved directly 

 forwards; a single spine exists on either side at the junction of the rostrum with the 

 carapace. The gastric region is very convex, and the tubercles become markedly 

 spiniform towards its anterior and lateral boundaries. The cardiac area is well defined 

 and somewhat triangular in outline ; a moderately deep groove separates it from the 

 gastric region. The branchial area is slightly convex, and the tubercles are crowded 

 together, with a decided tendency to become spinulous ; the cervical groove is represented 

 by a shallow depression. The antero-lateral border of the carapace is marked by a 

 prominent spine which is placed at the outer border of the ill-defined orbit and is 

 separated by a considerable interval from the first lateral spine. The lateral border is 



