24 
E. B. Wilson — Pycnogonida of New England. 
The following table is intended to show the general geographical 
and bathymetrical distribution of the species described in this paper. 
The occurrence of a species in any region is indicated by a -f- mark. 
A few of the species occur in the deeper waters far to the southward 
of their ordinary limits, and this is indicated by a ± mark. 
Geographical Distribution. 
Bathymetrical 
Distribution. 
. 
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fa 
Pycnogonum littorale Strom. 
± 
+ 
+ 
+ 
+ 
4- 
4- 
+* 
+ 
0-430 
Tanystylum orbiculare Wits. 
+ 
+ 
~ 
0-14 
Achelia spinosa (Stimp.) Wits. 
± 
+ 
+ 
4- 
0-34 
Pseudopallene hispida (Stimp. ) WUs. 
+ 
0-12 
Pseudopallene discoidea (Kr. ) Wits. 
+ 
0-20 
Pallene empusa WUs. 
+ 
+ 
+ 
0-3 
Phoxichilidium maxillare Stimp. 
+ 
+ 
+ 
+ 
Phoxichilidium minor WUs. 
+ 
+ 
0-10 
Anoplodactylus lentus Wils. 
Ammothea achelioides Wils. 
+ 
+ 
+ 
+ 
0-6 
Nymphon Stromii Kr. 
+ 
+ 
+ 
+ 
+ 
+ 
+ ? 
+ 
35-112 
Nymphon longitarse Kr. 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
16-90 
220 
Nymphon grossipes Fabr. 
± 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
16-100 
416f 
Nymphon hirtipes Bell. 
1 + 
+ 
+ 
+ 
25-90 
299 
* teste Philippi. f N. mixture Kr. (teste G. 0. Sars). 
NOTE. 
After this article had been put in type, an important paper, li Prodromus descrip- 
tions Crustaceorum et Pycnogonidarum, quae in Exp. Norvegica anno 1876, observavit 
G. 0. Sars,” in the Archiv for Mathematik og Xaturvidenskab, 1877, page 337, was 
received. Owing to the absence of Mr. Wilson, he has been unable to make any use 
of that article. It may, however, be useful to state that Dr. Sars confirms the identity 
of Nymphon hirtum Fabr. and N. hirtipes Bell, adopting the former name. He also 
enumerates N. mixtum Kroyer and N. gracilipes Heller as valid species. 
From this source I have also added to the table some facts concerning the bathy- 
metrical distribution of the species on the northern coast of Europe. 
A. E. Yerrill. 
