COPEPODS OF THE WOODS HOl^ REGION 



145 



MALBS 



1. Head with a distinct median crest ; urosome and corners of fiftli 



segment slightly asymmetrical acutifrons (p. 145) 



Head without crest ; urosome and corners of fifth segment 



symmetrical 2 



2. Right fifth leg, including chela, much longer than left, the latter 



without any trace of an endopod nerii (p. 146) 



The 2 fifth legs about equal in length ; left leg with a rudimen- 

 tary, 1-segmented endopod aestiva (p. 147) 



LABIDOCERA ACUTIFRONS (Dana) 



FiauRE 98 



Pontella acutifrons Dana, Proc. Amer. Acad. Arts and Sci., vol. 2, p. 30, 1849. 

 Labidocera acutifrons Giesbrecht, Fauna uud Flora des Golfes von Neapel, 

 vol. 19, p. 44,5, pis. 23, 41, 1892. 



Occurrence. — Thirty males and females in surface tow south of 

 Gay Head by Rathbun, September, 1883; 75 males and females in 

 surface tow in Vineyard Sound by Rathbun, August, 1882 ; 200 males 



Figure 98.- — Lahidocera acutifrons: a, Female, dorsal ; b, 

 male, dorsal ; c, male, fifth legs ; d, female, fifth legs 



and females, including development stages from trawl wings, 

 Stations 2074, 2093, 2195, 2230, Albatross, south of Nantucket and 

 Marthas Vineyard. 



Distrihutiori. — Pacific Islands (Dana) ; tropical Altantic (Cleve) ; 

 Gulf of Guinea (T. Scott) ; Mediterranean (Giesbrecht) ; Philip- 



