b) 
] U. S. NATIONAL MUSEUM BULLETIN 100. VOL. 14 PART 4, PLATE 2 
L 
SPECIES OF ACARTIA, ACROCALANUS, AND AMALLOTHRIX. 
1-5, Acartia hamata, new species, female: 1, Dorsal view; 2, lateral view; 3, first antenna: 
first segment and proximal portion of second segment; 4, posterior margin of fused 
fourth-fifth thoracic segment and genital segment; 5, fifth leg. 
6, Acrocalanus monachus Giesbrecht, female: Lateral view. 
7, 8, Amallothrix arcuata (Sars), female: 7, Lateral view; 8, fifth legs. 
* 
843804—50———_21 
