158 " THETIS " SCIENTIFIC RESULTS. 



PLATYONYCHUS, Latreille. 



PLATYONYCHUS BIPUSTULOSUS, H. Milne-Edwards. 



Platyonychushipusttdosus, H. Milne-Edwards, Hist. Nat. Crust., i., 

 1834, p. 437, pi. xvii., figs. 7-10. 



Station 23. 



Two specimens — one male and one female — obtained at New- 

 castle Bight, in 16 to 19 fathoms. 



CATAMETOPA or OCYPODIIDEA. 



FamUy OCYPODIDJE. 

 Suhjamily CARCINOPLACIN^. 

 PILUMNOPLAX, Stimpson. 



PILUMNOPLAX ABYSSICOLA, Miers. 



Pilumnoj)lax ahyssicola, Miers, Chall. Rep., Zool., xvii., 1886, 

 p. 228, pi. xix., fig. 2. 



Station 37. 



Six male examples are referred to this species. They agree in 

 the main with the description and figure above quoted ; the only 

 point of diffei'ence is in the granulation of the carapace, which 

 appears to be much finer than in the type. The words "veiy 

 finely granulated " are applied to the chelipedes only ; the cara- 

 pace is referred to as being " everj- where granulated." 



The granulation of the carapace is exceedingly fine and very 

 peculiar ; the granules are scarcely perceptil)le to the unaided 

 eye ; a one inch or two-thirds ol)jective is requisite to see them 



