252 Mr. H. J. Carter’s Contributions to our 
inch thick, bearing the register no. 71. 6. 5. 1 and my run- 
ning no. 15. On reexamining the wet specimen, to which I 
have alluded, I find that the dermal layer or cortex is only 
1-277thinch in vertical diameter, but sufficiently thick to present 
a slippery, homogeneous, glutinous consistence, which, by its 
opacity, prevents the subjacent structure from being seen ; so 
that, with its stelliferous character, Grayella cyathophora also 
comes within our specification of the Gumminida ; but whether 
all such sponges should be here introduced which conform to 
this “‘ specification”’ alone, is questionable; hence I shall 
return to this point hereafter under the head of ‘‘ Observa- 
tions.” 
Columnitis squamata, from the Antilles, is another sponge 
which Schmidt has added to his Gumminiew (No. 13, p. 25, 
Taf. v. figs. 3, 4), and therefore is inserted here; but as a 
similar incrustation occurs on this coast which I have always 
regarded as closely allied to, if not the same as, Donatia 
(Tethya) lyncurium, and Donatia itself may justly claim a 
place among the Carnosa from its semicartilaginous consis- 
tence &e., I shall also return to this subject again. 
Finally, in 1879 I figured and described a sponge under 
the name of Latrunculia corticata, said to have come from 
the Red Sea (No. 28, p. 298, pl. xxvii. figs. 1-4), covered 
with a homogeneous, semicartilaginous, thin dermis surround- 
ing a reticulated structure internally charged with acerate 
skeleton- and spinispirular flesh-spicules, but the latter varying 
in form from a “spinispirula’”’? to “sceptrella.” When 
softened by soaking in water the dermal layer is found, under 
the microscope, to be almost entirely composed of the filamen- 
tous feltiform tissue, while the interior is also very tenacious 
and glue-like; so that, with its spicules, this species also must 
be classed with our Gumminida. 
Hence, when tabulated, the whole will stand thus :— 
| Order 1. CARNOSA. 
Char. Without evident skeleton. 
Family 1. Halisarcida. 
Char. Possessing no spicules. 
Halisarca Dujardinti, Johuston. Great Britain. 
lobularis, Schmidt. Adriatic, 
—— guttula, Sdt. Adriatic, 
