26 



THE VOYAGE OF H.M.S. CHALLENGER. 



Depth in Fathoms. 



(i) 



(?) 



0) 



(?) 



Low water 

 mark to 17 

 fathoms; 35 

 fathoms. 



Low tide to 

 a few faths. 

 (Hodge). 



Name. 



Geographical Distribution. 



Off Cape Sima (Japan). 



Pamzetes, Slater (1879). 



Mandibles rudimentary, two-jointed ; palpi nine-jointed ; ovigerous legs ten-jointed ; 



proboscis fusiform. 



Pamzetes aucJienicus, Slater, Annals and Mag. of Nat. 

 Hist., 5th series, iii. 281, 1879. Slater calls the generic 

 characteristic of Pamzetes " distinct." The description 

 of the genus and species has been given from a single 

 specimen, so I doubt whether the generic differences from 

 Zetes or any other closely-allied genus will hold good. 



Panboea, Philippi (1843). 



Mandibles rudimentary, two-jointed ; palpi five-jointed ; ovigerous legs nine 

 (noune ten- (?) ) jointed ; proboscis ovate. 



Parihoea sjnm'pnipis, Philippi, Arch. f. Naturg., 1843, ix. 

 p. 178. Perhaps the description of this species is not 

 taken from an adult specimen. 



Sorrento (Gulf of Naples). 



Aldnovs, Costa (1861). 



Mandibles rudimentary, three-jointed ; palpi seven- or nine-jointed ; ovigerous legs 

 eight-jointed ; proboscis long-ovate. 



Aldnoiis vulgaris, Costa, Microdoride mediterranea, Mediterranean. 



Napoli, 1861, p. 13. This species has, I believe, a 



certain resemblance to an Ascorhijnchus. 

 Alcijunis mer/acejjJialus, Costa, Microd. medit. Napoli, Gulf of Naples. 



1861, p. 14. This species belongs rather to Panboea, 



Pliilippi, than to Alchwiis, Costa. 



Achelia, Hodge (1864). 



Mandibles rudimentary, two-jointed ; palpi eight-jointed ; ovigerous legs 

 ten-jointed ; proboscis pyriform. 



Achelia spinosa, Stimpson (sp.). Zetes spinosa, Stimp- 



son. Invertebrata of Grand Manan, 1853, p. 37. A. 



spinosa, "Wilson, Pycnogon. of New England, Trans. 



Connect. Acad, of Arts and Sciences, vol. v. p. 7, 1880. 



The differences of A. spinosa, Stimpson, from Hodge's 



A. echinata " seem scarcely sufficient to separate them 



as distinct species" (Wilson, loc. cit.). 

 Achelia echinata, Hodge, British Pycnogonoidea, Ann. and 



Mag. of Nat. Hist., 3d ser., vol. xiii p. 115, 1864. A 



good description of this species has been given by Grube, 



St Vaast la Hougue und seine Meercs — besonders seine 



Anneliden-Fauna, Verhandl. d. Schles. Gesellsch. f. 



vaterl. Cultur, 1869-72, p. 27 (Separatabdruck). Per- 

 haps identical with A. spinosa, Stimpson, Inverte- 

 brata of Grand Manan, 1853, p. 37. 



Grand Manan ; Eastport, Casco 

 Bay, off Block Island, &c. 



Channel Islands, Isle of Man ; 

 Durham Coast, St Vaast la 

 Hougue, Dutch Coast. 



