242 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
Stations 16; 27; 48; 3412; 8878; 3921; 4010; 4190; 4583; 4585; 
4588; 4592; 4600; 4605; 4615; 4619; 4638 ; 4640; 4644 ; 4952; 5102; 
5105; 5110; 5183; 5184; 5175; 5177; 5179; 5180; 5186; 5190; 5191; 
5196; 5209; 5211; 5993- 5095 : 5226; 5298-5230 ; 5262; 5263; 5299; 5312; 
5319; 5340; 5342: 5348 ; 5382: 5386; 5415 5 54345 5488 ; 5530; 5558 5 
5611; 5672; Tae Sieaite: Nasaeba Bae Port onic Parone ad 
aider: Bay anchorage, west coast of Mindanao, Philippine Pelee: 
For some reason this species was not included in the Monaco plankton, 
although present in all the other. The numbers at some of the sta- 
tions run into the hundreds. 
LABIDOCERA ACUTIFRONS (Dana) 
Priate 11, Fiaures 124, 125 
Pontella acutifrons Dana, Proce. Amer. Acad. Arts and Sci., vol. 2, p. 30, 1849. 
Pontellina acutifrons DANna, United States Exploring Expedition, 1838-1842 
(Wilkes), vol. 14, pt. 2, Crustacea, p. 1149, 1853; pl. 80, fig. 11 a—h, 1855. 
Stations 3; 15; 16; 2195; 2806; 8694; 3791; 3799; 3822; 3829; 3867; 
3878; 3901; 3927; 3932; 3980; 3981; 4009; 4010; 4011; 4037; 4190; 
4580; 4590; 4615; 4619; 4640; 4644; 4652; 4659; 4661; 4663; 4664; 
4667; 4669; 4671; 4673; 4714; 4952; 5105; 5155; 5186; 5262; 5338; 
5840; 5358 ; 5460; 5489; 5530; 5601; Sabtan Island, Philippine Islands. 
Identified by Sars at 15 of these Albatross stations and at 2 Monaco 
stations; present in all the other planktons except the Siboga. 
LABIDOCERA AGILIS (Dana) 
PLATE 23, FicurEs 342, 343 
Pontella agilis DANA, Proce. Amer. Acad. Arts and Sci., vol. 2, p. 30, 1849. 
Pontellina agilis Dana, United States Exploring Expedition, 1838-42 (Wilkes), 
vol. 14, pt. 2, Crustacea, p. 1147, 1853; pl. 80, fig. 10 a—e, 1855. 
Stations 3; 27. In the Wilkes plankton Dana established a new 
species that he named Pontellina agilis. The type specimens were 
captured in the tropical Atlantic north and south of the Equator. 
This species has not been reported by any subsequent observer but was 
transferred by Giesbrecht (1898, p. 138) to the present genus and 
considered of doubtful validity. Five females obtained in surface 
tow, three near the Virgin Islands in the Lesser Antilles, correspond 
so completely with Dana’s description and figures as to leave no doubt 
of their identity. 
Female.—Metasome elliptical, nearly three times as long as wide; 
head broadly rounded anteriorly and distinctly separated from the first 
segment, without lateral hooks. First thoracic segment much longer 
than the second, third and fourth about the same length, fifth very 
short. Spines at the posterior corners also short, triangular, acute, 
and removed inward a little from the corner. 
