166 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
24140 
ewe 
fee e ey 
races 
e 
. 
— > 
7 
atorial Cy, 
Eg beeen Hey 
a * 
ye = 
Boreal- arctic: 
Nymphon hirtipes 
»  & Mymphon longitarse 
\,, Sub-tropical: ; 
«. O Endeis spinosa (@-pelagic) « 
VAnoplodactylus insignis =. 
Se Endeis spinosa and Sargassum sp 
\  (dravm to diferent scales) 
Adapted {rom National 
Geographic Society 
map, Atlantic Ocean” 
01939} IW Hedqpeth, 1943 
Figure 6.—Distribution of various cold- and warm-water pycnogonids (from various 
sources). 
N. longitarse, and Pseudopallene circularis are typical species of this 
region. Except for a single deep-water record for Nymphon longitarse 
at about latitude 40° N., these species are not found south of Cape 
Cod. There seem to be only two species that might be considered 
indigenous to the New England region, Achelia spinosa and A. scabra. 
But Achelia spinosa is considered to be synonymous with the European 
A. echinata by several writers. 
Few littoral species have been collected from both the Gulf of 
Maine region north of Cape Cod and the Woods Hole area immediately 
