REPORT ON THE PYCNOGONIDA. 23 
Depth in Fathoms. Name. Geographical Distribution. 
1100 *Nymphon compactum, n. sp. A well-characterised deep- | East of Auckland (Station 128, 
sea species, of which only females—two specimens in Challenger Expedition). 
all—have been dredged. 
50 Nymphon phasmatodes, Bom, Pyenogoniden des Museums | Cape of Good Hope. 
zu Berlin, Monatsb. der K. Akad. der Wiss. zu Berlin, 
p- 173, 1879,Taf.1. fig. 2-20. Seemsto be a good species. 
1375 to 1600 | *Nymphon hamatum, n. sp. A good and common deep- | Between Kerguelen and Cape of 
sea species. Good Hope. 
1100 *Nymphon longicoxa, n. sp. A fine well-characterised | East of Auckland (Station 168, 
deep-sea species, of which thirteen specimens were Challenger Expedition). 
dredged by the Challenger. 
2160 *Nymphon procerum, n. sp. A slender deep-sea species, | West of Valparaiso(Station 299, 
which is well-characterised yet requires further study. | Challenger Expedition). 
Family II. CoLossenDEIDa 
Contains those Pyenogonida which have either rudimentary mandibles or no mandibles 
at all, strongly-developed palpi and ovigerous legs present in both sexes, and as a rule 
furnished with denticulate spines. The genera belonging to this group are very numerous : 
Ammothea, Ascorhynchus, Achelia, and Colossenders are typical representatives. 
Depth in Fathoms. Name. Geographical Distribution. 
Ammothea, Leach (1815). 
Mandibles Liarticulate, cheliform, feeble ; palpi nine-jointed; ovigerous legs ten-jointed ; 
proboscis pyriform. 
(%) Ammothea carolinensis, Leach, Zool. Mise., vol. i. p. 34, | South Carolina. 
1815, pl. xiii, Of this species a very good drawing 
has been published by Leach. 
0 to 5 Ammothea pycnogonoides, Quatrefages, Mémoire sur | Saint Malo (Coast of France). 
Vorganisation des Pycnogonides, Ann. d. Se. Nat. 
3ime série, Zool., tom. iv., Paris, 1845. I think 
this species is closely related to A. longipes, Hodge, 
but the descriptions of both authors are so very in- 
sufficient that this is not to be made out. 
() Ammothea longipes, Hodge, Ann. and Mag., 3d series, | Polperro (English Coast) (St 
vol. xiii. p. 114, 1864; Grube, Verhandl. d. Schles. Vaast la Hongue (Grube); 
Gesellsch. f. vat. Cultur., 1869-72. The description Roscoff (Grube). 
of this species is also quite insufficient; it cannot 
be made out whether the species described by Grube is 
identical with that of Hodge. The specimen of Grube 
is furnished with six-jointed palpi, whence I believe it 
not to have been an adult animal. In all probability it 
is the same as that described by Quatrefages as A. pycno- 
gonoules, Ann. d. Se. Nat., iii. série, Zool., tom., iv., 1845. 
