268 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
MONSTRILLA SERRICORNIS Sars 
Moustrilla serricornis Sars, Crustacea of Norway, vol. 8, p. 19, pl. 10, fig. 1, 1921. 
Four males were taken in a surface tow at Butaritari Lagoon in the 
Gilbert Islands and two more in company with the preceding species 
at the Caldera Bay anchorage, west coast of Mindanao, Philippine 
Islands. The records of these three Monstrilla species are the first 
from the Pacific Ocean, and the present species is the only one here- 
tofore reported since the original discovery. 
Genus MORMONILLA Giesbrecht, 1891 
MCRMONILLA MINOR Giesbrecht 
Mormonilla minor Giesprecut, Atti Accad. Lincei, Rome, ser. 4, vol. 7, sem. 1, 
p. 475, 1891; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 532, 
537, pl. 43, figs. 27, 33, 1892. 
Station 4700. Three females were identified by Sars from this 
station between Easter Island and the Galapagos Islands. Since this 
species does not appear in any of the plankton lists, this is the first 
record since the original discovery in the eastern Pacific off the coast 
of Ecuador. 
MORMONILLA PHASMA Giesbrecht 
Mormonilla phasma GIESBRECHT, Atti Accad. Lincei, Rome, ser. 4, vol. 7, sem. 1, 
p. 474, 1891; Fauna und Flora des Golfes von Neapel, monogr. 19, pp. 532, 
536, pl. 43, figs. 28-32, 34-41, 1892. 
Stations 3799; 4676; 4679; 4707; 5185; 5437. The second species of 
this remarkable genus is rather better known than the preceding one 
and was recorded from four Siboga stations but does not appear in the 
other lists. It was found by T. Scott (1894, p. 64) in considerable 
numbers in the Gulf of Guinea in tow from a depth of 235 fathoms. 
Genus NANNOCALANUS Sars, 1925 
NANNOCALANUS MINOR (Claus) 
Cetochilus minor CLAUS, Die freilebenden Copepoden, p. 172, 1863. 
Stations 2; 6; 16; 27; 31; 89; 41; 48; 44; 47; 538; 55; 57; 71; 77; 79; 
2236; 3765; 38789; 3799; 3829; 3867; 3901; 3912; 4010; 4190; 4588; 
4611; 4635; 4640; 4644; 4646; 4655; 4659; 4663; 4664; 4673; 4684; 
4700 ; 4703 ; 4707 5 4710; 4715; 4719 ; 4721; 4723; 4738; 4748 ; 4850; 4952; 
5120; 5129; 5155; 5175; 5180; 5185; 5186; 5190: 5191; 5196>-5208: 
5223-5225; 5228; 5229; 5231; 5234; 5246; 5262; 5263; 5299; 5301; 
5809; 5819; 5820; 5338; 5340; 5382; 53886; 5388; 5396; 5897; 5410; 
54113 5414; 5415; 5424; 5487; 5530; 5553; 5646; 5647; 5651; Sabtan 
Island, Philippine Islands; Fiji Islands; Charles Island, Galapagos. 
This is one of the most widely distributed of the calanoids. It ap- 
pears in all the plankton lists except the Challenger and is abundant 
in all, especially in the Monaco one. 
