A tical te Bie ee ea Site eh nh ea ae ee o> Seis ae a Se) ae ee 
od 
Setti-cells with 
he Borge mye--~T have, after great considerati I 
in 
21 
V 
of isthmus, 9p. (Plate 
Hab.: Rockingham Bay, J. Dallachy. 
Form, Nordst., J.c., but much larger. Length of cell, 45-46 p ; 
breadth, 28-29 » ; breadth of isthmus, 11-12 ». (Plate XV.) 
Hab.: Rockingham Bay, J. Dallachy. 
C. tetraopthalmum (Kitz), Bred. 
Hab.: Mitchell River, near the Gulf of Carpentaria, Edw. Palmer. 
C. Brebissonii, Menegh. 
Hab. : Waters of the Gulf country, Dr. Thos. L. Bancroft. 
C. denticulatum, Borge (n. spec.). Very large, 1} as long as its 
diameter, middle deeply constricted, suture almost straight, widened at 
middle; in lateral view somewhat oval, membrane punctulate towards 
the sides, the remainder densely denticulate. Length of semi-cell 
with teeth, 84°5-91—(cell) 182; breadth of semi-cell with teeth, 
126-130—(cell) 133 4; breadth of isthmus, 45°5-45°5 p.—Borge. 
Plate XV.) 
: 8eCurif 
onal in the middle, suture with sharp angles, not greatly 
e 
Tounded ; apices of the semi-cells furnished with 3 curved marginal 
“urs, and a little above them with one spur; membrane densely 
“robiculate, thickened in the middle and often brown; in vertical 
mew With rhomboidal truncated sides, apices denticulate. of 
| ength 
oe 65»; breadth with spurs, 131-182 p; breadth of isthmus, 
oP orge. (Plate XV.) 
ab.: Between the Norman and Gilbert Rivers, 7. Gulliver. 
: C. uiforme (Ralfs), Arch. 
b.: Waters of Gulf country, Dr. Thos. L. Bancroft. 
C. pse i little broader than long; 
udobroomei, Wolle. Form a li Oeste) view 
Luteells as in Plate LL, fig. 36, Wolle Desm. United States. 
renath of cell, 43-45°5 Bh; ‘hadile 45°5-48 »; breadth of isthmus, 
a (Plate XV. 
4D.: Joh = ; f 
Ohnstone River, Dr. Thos. L. pee Siete oia shia form to dole 
; ; on the 
front view it does no ~ XVI., in Ralfs Brit. Desm. 
Tr 
es 
All its details of truct ik receding (C. Broomei), but entirely devoid 
finns tral inflation.” Tf this prt opt I would, without hesitation, assign the 
“Served by me to C. pseudobroomei. 
W173 
