Sponges of Kaneohe Bay — DE LaUBENFELs 
like than that of lotrochota. The endosome 
is microcavernous with a skeleton that ap- 
proaches the isodictyal condition, very much 
as in Tedania. There are a few vague spic- 
ular tracts, about 50 g in diameter in the 
type specimen but somewhat more than twice 
as thick in the second specimen. The latter 
grew on the beach of the open ocean, whereas 
the type was in calm water; this probably 
accounts for the difference. 
The ectosomal spicules are smooth stron- 
gyles 3 by 1 40 to 6 by 205 g in size. The 
endosomal spicules are smooth styles 7 by 
135 to 10 by 180 g in size. Both sorts are 
consistently a little larger in the Kaalualu 
specimen. Both sorts are somewhat thicker, 
up to 12 g, in the Honaunau specimen. The 
microscleres are amphidiscs. Their length is 
12 to 13 g in the type specimen, 15 g in 
both others. There are often only four clads 
at each end in those of the type specimen, 
usually more clads in the corresponding spic- 
ules of the other two specimens. In the type 
specimen the clads are less strongly recurved. 
In the Honaunau specimen, as in many hya- 
lospongoid amphidiscs, the shaft is visibly 
spiny. 
The species name is given because this is 
the first of the genus. 
Tedania ignis (Duchassaing and Michelotti) 
Verrill 
Fig. 13 
This species is very common throughout 
the shallow waters of Hawaii including 
Kaneohe Bay. It is represented by a specimen 
collected at Moku O Loe from coral, near the 
pier (location number 6, Fig. 2). This speci- 
men is deposited in the U. S. National Mu- 
seum, Register Number 22744. 
This species is basically encrusting, with 
the oscules often so elevated that chimneys 
as tall as 4 to 7 cm. result, yet these chimneys 
are usually less than 1 cm. in diameter, hoi 
low, and thin-walled. Specimens are some- 
times as large as a hand, more often somewhat 
21 
smaller. The color is bright vermilion where 
the sponge tissue grew in brilliant illumina- 
tion, but more orange, even to yellow, in 
proportion to the amount of shade in which 
the sponge grew. The consistency is soft and 
the sponge easily torn or compressed. 
The surface is smooth, with abundant, very 
contractile pores. The oscules are from 2 to 
7 mm. in diameter, often raised in the form 
of tubes. The ectosome is a definite dermis, 
over subdermal spaces, and is packed with 
special spicules, not always horizontal but 
instead in many orientations; some clusters 
are actually perpendicular to the surface. The 
endosome is finely cavernous, somewhat 
"crumb of bread” style, with its spicules in 
quite confused arrangement. 
A 
Fig. 13. Tedania ignis (?), spicules, from a 
camera lucida drawing, X 666- A, dermal tornote. 
B, endosomal style. C, microspined raphides. 
