46 McMURRICH. [Vou ii; 
mesenteries, and were, so far as I could discover, the only nem- 
atocysts present. 
None of the specimens examined showed any traces of repro- 
ductive organs. The spawning season was probably just over, 
as I obtained a few free-swimming larvz from a vessel in which 
a couple of this species were kept over night. 
Genus HETERANTHUS, Klunz. 
Synon. — Ricordea — Duchassaing and Michelotti, 1860. 
Heteranthus — Klunzinger, 1877. 
Actinothrix — Andres, 1883. 
Rhodactidz, with short marginal tentacles, forming a single 
row, and with the disc covered with tuberculiform tentacles 
arranged radially. 
The type species of this genus is Heteranthus verruculatus of 
Klunzinger (77), which has the characters given above. Cer- 
tain features presented by it are not, however, met with in the 
Bahaman species ; for instance, the verrucze of the column are 
absent in the latter form, as are also the bunches of tubercles 
on the margin. These may be looked upon, however, as specific 
differences, and Klunzinger’s definition has consequently been 
altered. Andres (83) associated A. verruculatus with the Ac- 
tinotryx Sanctt Thome of Duchassaing and Michelotti, retaining 
that generic title inasmuch as it was the older. I have stated 
my belief that Actznotryx is really a Rhodactis, and consequently 
that term should be disregarded, and the one employed by Klun- 
zinger retained. 
I have also departed from Andres’ arrangement in placing 
Heteranthus in the family Rhodactidz. That author associates 
it with Crambactis in the family Crambactidz. The tubercular 
disc tentacles in Heteranthus, however, are much more similar 
to the lobed ones of R/odactis than to the foliose ones of Cram- 
bactis, and furthermore, the marginal tentacles of Heteranthus 
and Rhodacizs are in a single row, while those of Crambactzs are 
arranged in several cycles. Consequently I associate the two 
former genera together in one family, leaving Crambactis as the 
sole genus of another. 
The term Rzcordea, proposed by Duchassaing and Michelotti 
(60) as a new genus for the reception of the species to be de- 
