PYCNOGONIDA OF NEW ENGLAND AND ADJACENT WATERS. 487 



range on our coast, in depth, is from 7^ fathoms (Gloucester Harbor, 

 mud and sand) to 115 fathoms (27-31 miles E. S. E. from Cape Ann, 

 gravelly bottom). 



I cannot distinguish this species from Goodsir's N. (jiganteum. 

 JVymphon gracilipes, of Heller, is also very closely similar to, if not 

 identical with, this species. In his figure, however, the dactylus is 

 represented of nearly the same length with the propodus, and it may 

 be distinct. The '•'■ Pycnogonum grossipes^^'' figured in the "Zoologica 

 Danica," is certainly not N. grossipes Fabr., and it seems to me most 

 probable that it is to be referred to K Stromii. 



It is worthy of note that the arch of the upper side of the oculiferous 

 segment, when laterally viewed, is very variable, as is also the length 

 of the constricted portion or " neck." 



Specimens examined. 



Nymphon macrum, sp. nov. 



Plate IV, Figures 21 to 23. 



Distinctive characters. — Antenna) extremely slender, with the claws 

 of the chelae much curved. Accessory legs separated from the first 



