3828 REPORT—1868. 
bricius in his ‘ Fauna Grénlandica’ forty-eight years before, and simi- 
larly the next species appears as Leucosolenia botryoides, Bowerbank, 
though Ellis and Solander were the describers of the species under the 
name Spongia botryoides. A curious aggregated form occurs in company 
with the var. G. compressa in Halse Hellyer. 
Leucosolenia botryoides (Ellis & Sol.). Common under stones and attached 
to seaweeds. Specimens of gigantic growth found in the same spot with 
the very large Grantia compressa, living attached to the underside of 
stones. 
lacunosa (Johnston). ‘Shetland, 1864” (Peach, fide Bowerbank). 
coriacea (Montagu). Common under stones, and on the sides of caves 
in various parts of Shetland. Abundant in Halse Hellyer, Burrafirth, 
where lemon-yellow and white varieties live side by side. 
Leuconia nivea (Grant). ‘Shetland, 1864” (Bowerbank in litt.), The speci- 
mens in this and other cases thus quoted Dr. Bowerbank informs me 
were sent to him by Messrs. Jeffreys and Peach. 
jistulosa (Johnston). Dredged in St. Magnus Bay, 30-60 fathoms, 
Order SILICEA. 
Geodia Zetlandica, Johnston, “ Island of Foulah and Unst ” (Jameson). 
Pachymatisma Johnstonia, Bow. A single specimen, procured after great 
difficulty, and not without some danger, at the extremity of ‘ Will 
Hellyer,’ Burrafirth, a cave of difficult access, except under most favour- 
able conditions of weather. 
Genus Normanta, Bowerbank, n. g. 
«Skeleton composed at the external surfaces of short fasciculi of siliceous 
spicula; in the interior, of an irregular siliceo-spicular network. Dermis 
furnished with ternate connecting spicula. Ovaria membranous, aspiculous, 
“Type, Normania crassa. 
«The general structure of the skeleton of the type specimen of this genus 
is very like that of Pachymatisma, but it is readily distinguished from that 
genus by the total absence of siliceous ovaria, and by its thin and delicate 
dermal system. 
«The radial structure of its skeleton near the surface of the sponge, and 
its dermal connecting spicula, bring it somewhat into alliance with Heionemia, 
but the total absence of a central axial column readily distinguishes it from 
that genus. I have named this genus after my friend the Rev. Alfred Merle 
Norman, the ardent and accomplished naturalist to whom I am indebted for 
numerous new and valuable species of British sponges.” 
“A genus Normania was established by Mr. G. 8. Brady in 1866, for a 
section of Crustacea Ostracoda (vide Trans. Zool. Soc. vol. v. p. 382), but 
that title cannot be adopted, as the Normania of Brady is identical with 
Loxoconcha of G. O. Sars, which was founded a few months previously (vide 
G. O. Sars, Oversigt af Norges marine Ostracoder, 1865, and G. S. pny, 
Trans. Linn. Soc. vol. xxvi. 1868, p. 432). 
“ Normania crassa, Bowerbank, n. sp. Sponge cup-shaped, sessile ? ; paridtan 
stout and thick. Surfaces smooth, outer one minutely reticulated. Os- 
cula on inner surface simple, variable in size, very numerous. Dermis 
thin, pellucid; outer surface furnished with a stout polyspiculous irre- 
gular reticulation; on the inner one with numerous dispersed tension- 
spicula large and small; spicula subfusiformi-acerate; and also with 
numerous large and small attenuato-stellate rctentive spicula. Con- 
