Depth in Fathoms. 
(?) 
() 
5 to 7 
Down to 14 
fathoms 
(Wilson). 
3 to 4 fathoms, | 
(2) 
700 
REPORT ON THE PYCNOGONIDA. 
Name. 
27 
Geographical Distribution. 
Achelia levis, Hodge, British Pyenogonoidea, Ann. and | Polperro, Cornwall (Hodge), 
Mag. of Nat. Hist., 3d ser., vol. xiii. p. 115, 1864. 
Bohm (Monatsb. d. K. Akad. der Wiss. in Berl., 1879, 
p- 186) refers to the same species a specimen from Ker- 
guelen with seven-jointed palpi. 
Achelia hispida, Hodge, British Pyenogonoidea, Ann. 
and Mag. of Nat. Hist., 3d ser., vol. xiii. p. 115, 1864. 
I doubt, whether this species described by Hodge is 
indeed a true species. 
Tanystylum, Miers (1879). 
Mandibles rudimentary, one-jointed ; palpi six-jointed ; 
proboscis rounded-conical. 
Tanystylum styligerum, Miers, Crustacea of Kerguelen 
Island, Phil. Trans. London, vol. clxviii., extra vol., pp. 
200-214, pl. xi, 1879. Nymphon styligerum, Miers 
(sp.), Ann. and Mag. of Nat. Hist., 4th ser., vol. xvi., 
1875. Most probably this is a good species ; however, 
I do not feel quite sure that the two specimens studied 
by Miers are really full-grown animals. 
Tanystylum orbiculare, Wilson, Pyenogonida of New 
England, Trans. Connect. Acad., vol. v. p. 5, 1880. 
Whether or not Zanystylum will prove a well-char- 
acterised genus, or will turn out to be identical with 
Achelia, Hodge, is doubtful as yet. 
Nizza (Grube), Kerguelen 
(Bohm). 
Polperro, Cornwall. 
ovigerous legs ten-jointed ; 
Kerguelen Island, Observatory 
Bay. 
Vineyard Sound, and occurs as 
far south as Virginia (Wilson, 
loc. cit.). 
Lecythorhyrchus, Bohm (1879). 
Mandibles rudimentary, two-jointed or represented by small knobs ; palpi nine-jointed ; 
ovigerous legs ten-jointed ; proboscis cylindrical. 
Lecythorhynchus hilgendoryi, Bohm, Monatsb. der K. | Enosima (Japan). 
Akad. d. Wiss. Berlin, 1879, p. 187. Corniger hil- 
gendorfi, Bohm (sp.), 76¢d. and Sitzungsber. d. Ges. 
Naturf. Freunde zu Berlin, 1879,.p. 140. Bohm has 
given a good description of this species, Joc. cit. 
Lecythorhynchus armatus, Bohm, Sitzungsber. der Ges. 
Naturf. Freunde zu Berlin, 1879, p. 140. JZ. hilgen- 
dorfi, Bohm, is furnished with rudimentary mandibles 
represented by small knobs; Z. armatus, Bohm, with 
rudimentary but two-jointed mandibles. There can be 
no doubt, however (according to Béhm), that these 
species belong to the same genus. 
Oorhynchus, Hoek (1880). 
Yeddo (Japan). 
Mandibles rudimentary, one-jointed ; palpi nine-jointed ; ovigerous legs ten-jointed ; 
proboscis broadly ovate. 
*Oorhynchus aucklandie, n. sp. Of this very character- 
istic Pycnogonid, only a single specimen was dredged 
during the voyage of H.M.S. Challenger. 
East of Auckland. 
