198 
PACIFIC SCIENCE, Vol. XV, April 1961 
lophon chelifer calif orniana de Laubenfels, 1932 
Fig. l,Cl,C2,C3 
The sponge so identified was dredged north- 
east of Blakeley on July 6, 1931, at a depth of 
between 50 and 66 m. It is an amorphous mass 
about 2X3X5 cm. In life it was a dull drab 
color, gradually turning black in alcohol. This 
is characteristic of the genus lophon , and is ex- 
hibited by few, if any, other genera in quite the 
same way, i. e., some turn black suddenly upon 
exposure to air, etc. The consistency is softly 
fragile, crumbling. The surface is irregularly tu- 
berculate, with a smooth dermal membrane 
much in evidence. This is broken off in many 
places, leaving numerous internal cavities ex- 
posed. It is difficult to say whether any oscules 
show or not; there are what appear to be oscules, 
but these may be merely places where the der- 
mal membrane has been broken off, exposing 
the underlying cavities. 
The interior is "crumb-of-bread” with an iso- 
dictyal reticulation of masses of spicules placed 
around minute cavities. The special dermal spic- 
ules are tylotes 4 to 7/x in diameter and 280/x 
long. The principal spicules are acanthostyles, 
reaching a maximum size of 16 X 320 /x. The 
microscleres include palmate isochelas of the 
peculiar shape characteristic of the genus, and 
also bipocilli 13 /x long, which resemble triden- 
tate unguiferate anisochelas. 
Ridley and Dendy (1886: 349) described 
lophon chelifer and Lambe (1893: 30) re- 
corded a sponge from the vicinity of Vancouver 
as of this species. There are differences from the 
typical race which were pointed out by de Lau- 
benfels (1932: 82) in connection with speci- 
mens which he had from California, for which 
he established the subspecies calif orniana. The 
Puget Sound specimens correspond very closely 
with those from California, and one need have 
little hesitation in regarding them as of the 
same variety. It is very probable that the speci- 
mens described by de Laubenfels (1928: 361), 
as Bartonella melanokhemia are also conspecific 
with this variety of chelifer. 
Ophlitaspongia pennata (Lambe, 1894) de Lau- 
benfels, 1927 
Fig l, El 
This species was found growing on Brown 
Island, just across from the laboratory of the 
University of Washington. It is an exceedingly 
thin crust as found at Puget Sound, only 1 or 
2 mm. thick, and spreading indefinitely laterally. 
The color at the time of collection was dull 
brown. The consistency is somewhat compress- 
ible, rather like that of soft wood. The surface 
is irregular with notable grooves radiating 
around minute oscules, only 200/x or 300/x in 
diameter. 
The structure consists of innumerable little 
plumose columns extending up perpendicularly 
from the base and little if any connected to 
each other except by protoplasmic structures. 
The bulk of the spicules in these tracts are sub- 
tylostyles 16 to 20 /x in diameter and about 330 /x 
long. Near the surface many are found which 
are only 3 X 200/x; these may or may not con- 
stitute a separate category. Toxas about 40/x 
long are occasionally found among the smaller 
spicules near the surface. 
This species was described as Desmacella pen- 
nata by Lambe (1894: 129). It is an exceed- 
ingly abundant sponge along the Pacific Coast 
of the United States, extending far down in 
California, almost to the Mexican boundary. It 
is noteworthy for its ability to survive intertidal 
conditions, often growing nearer the high tide 
mark than is true of other species of sponge. 
The species was transferred to the genus Gph- 
litaspongia by de Laubenfels (1927: 265). For 
a further discussion of the species, reference 
may be made to his paper on the sponges of 
California (1932: 103). 
My dale adhaerens (Lambe, 1893) de Laubenfels, 
1936^ 
Fig. 1, Dl, 2 B 
This species occurs abundantly in the vicinity 
of Friday Harbor upon bivalve mollusks of the 
genus Pecten. As noted above in connection 
with Ectyodoryx parasitica, about 10 percent 
(or slightly less) of the Pectens in this vicinity 
have Mycale as the sponge which covers the 
shell. 
The color in life is a dull grayish drab, and 
the consistency is softly spongy to fragile. The 
surface is nearly smooth, and what openings 
are found are susceptible to interpretation as 
being accidental ruptures in the dermis rather 
than structural oscules. 
