66 
PACIFIC SCIENCE, Vol. II, January, 1948 
that the pasture rotation system might prove 
more suitable for Micronesia. In addition, young 
pigs should be raised on sheltered, dry or con¬ 
crete floors and after weaning kept away from 
older hogs on places that have not been used by 
older hogs. To prevent the spread or increase 
in the incidence of the infection, it is important 
that infected hogs are not shipped to new areas. 
Piglets to be shipped to new localities should 
come from litters that have been raised on con¬ 
crete floors or dry areas. 
Parasites of Chickens. On the island of 
Ponape the following parasites were found in 
four adult chickens: (1) proventricular round- 
worms, letrameres sp.; (2) cecal worms, Het- 
erakis spp. (probably H. gallinae (Gmelin) and 
H. lingnanensis Li); (3) tapeworms, Amoe- 
hotaenia sp. (probably A. sphenoides (Rail- 
liet)) and Raillietina sp. (probably R. echino- 
bothrida (Megnin)); (4) lice, Lipeurus caponis 
(Linn.), Menopon gallinae (Linn.), and Oxyli¬ 
peurus angularis Peters; (5) mites, Pterolichus 
ohtusus Robin and Megninia cubitalis (Meg¬ 
nin). The chicken mite, M. cubitalis, was also 
collected from several chickens on the island of 
Guam. 
Parasites of Dogs. Post-mortem examination 
was made on one dog on Ponape. The small 
intestine of this animal showed extensive in¬ 
flammation associated with a large number of 
hookworms, Ancylostoma caninum Ercolani. A 
few tapeworms, identified as Dipylidium sp., 
were also found in the small intestine. The dog 
also showed a light infestation of fleas, Cteno- 
cephalides felis (Bouche). 
Parasites of Rats. Several mites, Laelaps 
echidninum Berlese, were collected from a few 
rats trapped on Ponape. No fleas were found on 
18 rats which were examined. Of the kidneys 
of 22 rats trapped on Moen and 18 rats from 
Ponape, 3 and 2, respectively, showed, in stained 
sections, presence of leptospirae morphologically 
identical to those of Leptospira icterohaemorrha- 
giae (Inada and Ido). 
The writer wishes to acknowledge the as¬ 
sistance of individuals who identified some of 
the parasites reported above, as follows: ticks 
from cattle, C. N. Smith; roundworms and tape¬ 
worms of chickens, E. E. Wehr; lice from 
chickens, C. F. W. Muesebeck and E. W. Staf¬ 
ford; mites from chickens, E. W. Baker; fleas 
from a dog and mites from rodents, C. E. Pem¬ 
berton; lymnaeid snails from Guam, H. A. 
Rehder.— Joseph E. Alicata, University of Ha¬ 
waii Agricultural Experiment Station, Honolulu, 
Hawaii. 
Laysan Albatross Nesting on Moku Manu Islet, off Oahu, T. H. 
On February 23, 1947, a young albatross was 
found among the Red-footed Boobies ( Sula 
s. rubripes) and Sooty Terns ( Sterna f. oahu- 
ensis) nesting on Moku Manu, which is ap¬ 
proximately three-fourths of a mile off Mokapu 
Peninsula on the northeastern side of Oahu. At 
this time the bird was covered with down and 
identification was impossible. By May 10 the 
young bird had assumed the characteristics of a 
young Diomede a immutabilis, and on July 12, 
when the picture was made, there could be little 
doubt of its identity. On July 29 the bird could 
not be found. Presumably it had left the island, 
as do the young at this season on other islands. 
This is the first recorded instance of the Laysan 
Albatross nesting in the eastern end of the Ha¬ 
waiian archipelago. Its most easterly nesting 
ground has heretofore been thought to be the 
Bird Islands, east of Necker Island in the Ha¬ 
waiian Islands and some 400 miles to the north¬ 
west of Moku Manu. 
Although successive trips were made to the 
nest site on March 20, April 19, May 10, 17, 31, 
June 14, July 12 and 29, 1947, adult albatrosses 
were never observed on the island. A single 
adult Diomedea immutabilis was observed May 
31 resting on the water just outside the reef at 
Kaneohe Bay, some 3 miles from Moku Manu. 
On June 14 another adult was observed flying 
above Mokulua Islet, off Lanikai, Oahu. These 
are the first inshore records of the Laysan Alba¬ 
tross in the waters surrounding the eastern end 
of the Hawaiian chain.— Harvey 1. Eisher, 
Department of Zoology and Entomology, Uni¬ 
versity of Hawaii, Honolulu, Hawaii. 
