FAUNil*:, GENERA, SPECIES, &C. Sjpong. 4 
Sea (Ann. N. H. 5, vi. p. 253), record 4 spp. of Holorrhaphidote Sponges, 
JIalichondria hyndmani, Bowerb., Isodictya sp., and 2 spp. nn. 
According to Dybowsky (4), tlie Baikal fauna consists of 1. endemic 
genus, AM5om^Vs/^:^a, containing 4 species. 41 Russian Sponges are known 
to the author ; their distribution is given. 
The Hexactinellida identified by Schmidt (9) from the Gulf of Mexico 
number 32 species ; 14 new genera are described. The 16 species of 
Tetractinellida include 1 new genus. There are apparently 24 species of 
Monactinellida^ with 2 new genera. 5 species and a new genus of Litlii- 
stida are added to those of 1879. The genera llalisarca^ Luffaria^ 
Sycortis, Sycandra and Leucandra have been identified, besides those 
mentioned below. 
The same author states, 1. c. p. 76, that in the Mexican and West Indian 
area Chalinecc were abundant between 200 and 300 fathoms, but never 
occurred deeper. 
65 species, of which 40, including the type of a new genus, are given 
as new, are described by Carter (1), from the Gulf of Manaar, between 
Ceylon and Hindostan, besides 1 from another locality. 
Czerniavsky (2) believes that constant interchanges have occurred 
between the Sponge-faunae of the Black and Caspian Seas. 
Gtenera, Species, &c., referred to. 
Carnosa (Carter). 
Halisarca dujardini, (6) pi. ix. figs. 1-12, 18-21 ; H. lobularisy 1, c. 
pi. ix. fig. 40. 
PsAMMONEMATA (Carter). 
DysideidcB, (7) p. 92. Taken by Marshall to include Dysidea, John- 
ston, and Psammascus, Psammoclema, and Psammopemma, gg. nn., and 
characterized as having a smooth surface, separable dermis, and foreign 
bodies in all the fibres. 
Dysidea^ (7) p. 98. Limited to D. fragilis^ Hyatt, and coriacea. Bower- 
bank, and 2 spp. nn. 
Spongelia incrustane, Schmidt, (2) p. 275. A “forma adriatica” and 
“ forma suchumensis ” described. 
Spongia plumay Lamarck, (7) p. 118, = Cacospongia ] S. turgida^ id. 
1. c., = Stellispongia. 
Rhapiiidonemata (Carter). 
Chalinula oculata from Holland ; Yosmaer, Tijdschr. Nederl. Dierk. 
Ver. V. p. XXV. 
Cacochalina, (2) p. 229, characterized. 
Sip>honochalina densa^ Crihrochalina infundibularis, (9) pp. 76 & 77, 
from Mexican Gulf region. 
Pachychalina compressa, Schmidt, (4) p. 44, pi. iii. fig. 3, pi. iv. fig. 8, 
includes Veluspa pohymorpha var. arctica, Mikl.-Maclay. 
Echinonemata (Carter). 
Clathria, Schmidt, (13) p. 149. Added to the Desmacidinoi hy Nob- 
maer, who finds anchorate and bihamate spicules in several of the 
