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PACIFIC SCIENCE, Vol. XI, April, 1957 
zukerani except that its chelas have shafts that 
are pronouncedly curved, as in the letter "C.” 
The other species already in Xytopsues was 
described as Desmacidon griseus by Schmidt 
(1870: 55). It is common in the West Indies 
and Bermuda, and is distinctive for its con- 
spicuously unguiferate chelas. The species 
zukerani is thus characterized by its rather 
typically arcuate chelas and by its orange 
color. The name is given in recognition of the 
services to science of Lester Zukeran of the 
Hawaii Marine Laboratory. 
Pellina sitiens Schmidt 
The sponge thus identified was collected 
29 March 1948 from a concrete dry dock at 
Pearl Harbor. It was out of water at the time 
of collection, but so placed as to be usually 
two or more meters under the surface. It 
covered an area about 5X7 cm. and consists 
mainly of oscular tubes 3 to 6 mm. in diam- 
eter; many of them attain a height of 2 cm. 
The walls of the tubes are paper-thin. The 
consistency is like that of wet paper. The 
surface is smooth, the pores not evident. The 
color in life was a pale dull yellow, the ap- 
pearance well described as semi-transparent. 
The ectosome contained abundant spicules 
tangentially placed. The endosome was es- 
pecially full of conspicuous flagellate cham- 
bers, round and 30 microns in diameter. The 
spicules are oxeas, chiefly in confused ar- 
rangements, and 15 X 450 to 12 X 480 mi- 
crons in dimensions. 
Ridley (1884: 414) described Pellina eusi- 
phona from the Indian Ocean, and de Lauben- 
fels (1954: 98) so identified a sponge from 
Ebon (Marshall Islands). The Hawaiian 
sponge is intermediate between that of the 
Western Pacific and Indian Ocean on the one 
hand, and the common North Atlantic species 
on the other hand. The latter was originally 
described as Eumastia sitiens by Schmidt (1870: 
42). The Hawaiian specimen agrees in color 
with sitiens , and not with eusiphona , and it is 
possible that eusiphona should fall in synon- 
ymy with sitiens , although this step is not 
taken here. Another possibility, also rejected, 
but with misgivings, is that a new name might 
be needed for the Hawaiian Pellina . 
Myxilla rosacea (Lieberkiihn) Schmidt 
This species has been reported from Ka- 
neohe Bay (de Laubenfels, 1950: 17). The 
Hawaiian specimens there recorded were 
orange-red. On January 19, 1948 some others 
were found in Oahu with the clear red color 
that is characteristic of Myxilla rosacea else- 
where in the world. 
Lissodendoryx calypta de Laubenfels 
The sponge thus identified was dredged 14 
February 1948 south of Diamond Head (Ho- 
nolulu), Oahu, at a depth of about 30 meters. 
It was a thin incrustation, less than 1 mm. 
thick, of a rich carmine red color. The con- 
sistency was mediocre, the surface smooth, 
with no pores and oscules that could be 
certainly identified. The skeleton consists of 
spicules in confusion. There are straight 
smooth tornotes that may be regarded as 
ectosomal, 2 X 165 to 2.5 X 200 microns. 
The principal megascleres are acanthostyles 
6 X 60 to 9 X 160 microns in dimensions. The 
smaller ones are spined throughout their en- 
tire length. The larger ones are smooth from 
the pointed end nearly halfway to the blunt 
end. The certain microscleres consist only of 
abundant isochelas of typical arcuate shape. 
Some extremely thin straight spicules may be 
raphides, but may more likely be juvenile 
tornotes. 
Lissodendoryx calypta was described by de 
Laubenfels (1954A 133) for a specimen from 
Eniwetok. It had smaller isochelas in addition 
to many like those in the Hawaiian specimen, 
and it lacked the larger acanthostyles, but the 
two agree in their lack of sigmas, lack of 
smooth styles, and thinness of incrustation. 
Axechina lissa new species 
This new name is based upon a single 
specimen, to be deposited in the U. S. Na- 
