298 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Family ASTRANGIDJi Verrill. 
Genus CLADOCORA Ehrenberg, 1834. 
Cladocora arbuscula (Le Sueur). PI. n, figs. 3, 3a. 
1820. Caryophyllia arbuscula, Le Sueur, Mem. Mus. d’Hist. Nat., Paris, t. vi, p. 275, pi. xv, fig. 2. 
1834. Cladocora csespitosa, var. |3, microstoma, p. 310, and Cladocora candelabrum, p. 311, Ehrenberg, Cor. Roth. Meer., 
Abhandl. K’gl. Akad. Wiss. Berlin for 1832, pp. 310, 311. 
1857. Cladocora arbuscula, Milne-Edwards & Haime, Hist. Nat. Coral]., t. ii, p.595. 
1861. Cladocora unipedalis, Duchassaing & Michelotti, Mem. Corall. Ant., p. 79 (of reprint), pi. x, figs 5,6. 
1866. Cladocora parvistella, Duchassaing & Michelotti, Suppl. M5m. Corall. Ant., p.91 (of reprint), pl.x, figs. 1,2. 
1880. Cladocora arbuscula, Pourtales, Mem. Mus. Comp. Zool., vol. vn, pl.iu, figs. 1-7. 
A large number of specimens of this species was collected at station 6087, off Culebra, Point 
Mula light-house, in 15] fathoms of water. The specimens are typical and show no noteworthy varia- 
tions. A few notes on the synonymy of this species may be in place. Milne-Edwards & Haime (op. 
sup. cit. ) have placed Ehrenberg’ s Cl. csespitosa var. /i and bis Cl. candelabrum in the synonymy of 
arbuscula. 1 have studied Ehrenberg’ s types in the Museum fiir Naturkunde in Berlin and verified 
the reference of Milne-Edwards & Haime. The original specimens of three species of Duchassaing & 
Michelotti were studied in Turin. Their Cl. arbuscula, conferta (Dana’s species), and unipedalis are 
the same species. The corallites in Cl. conferta are more crowded than is usual. The Cl. parvistella is 
placed in the synonymy of arbuscula from a study of their description and figures. The type was not 
found in Turin. The only character at all diagnostic given in the description is “calycibus * * * 
vix tribus millimetris latis,” and that is the usual diameter of the calices in arbuscula, the measure- 
ment given by Milne-Edwards & Haime. This leaves Cl. parvistella without any basis for specific 
recognition. 
Cladocora debilis Milne-Edwards & Haime. 
1849. Cladocora debilis, Milne-Edwards & Haime, Ann. Sci. Nat., 3itime s6r., Zool., t. xi, p. 308. 
1857. Cladocora debilis, Milne-Edwards & Haime, Hist. Nat. Corall., t. II, p. 599. 
1871. Cladocora debilis, PourtalOs, 111. Cat. Mus. Comp. Zool., No. IV, p. 30. 
One specimen, here referred to this species, was collected; the locality is not given. The speci- 
men is in had condition, being incrusted by Serpula tubes and nullipores. The calices are of about the 
same diameter as in arbuscula, but are much shallower and the pali are much more developed. The 
species is undoubtedly identical with specimens in the U. S. National Museum labeled Cladocora 
debilis by Dr. Rathbun. I can not feel sure that this species is really distinct from Cl. arbuscula. 
The essential differences consist in the calices of arbuscula being deeper and the pali much less 
developed than in debilis. These characters are subject to variation, and a more extensive study may 
necessitate the mergence of the two forms. Pourtales has suggested that what he has identified as 
Cl. debilis may be only a deeper water variety of Cl. arbuscula (op. sup. cit. ) . 
The other species of Cladocora, from eastern America are: Cladocora patriarca Pourtales, Brazil; 
C. pulchella Milne-Edwards & Haime, West Indies; C. johnsoni Gane, Pliocene of South Carolina; C. 
jamaicaensis Vaughan, Cretaceous of Jamaica. The Cladocora conferta (Dana) is a doubtful species. It 
possesses more septa than arbuscula. 
Genus ASTRANGIA Milne-Edwards & Haime, 1848. 
Astrangia solitaria (Le Sueur)? variety portoricensis, var. nov. PI. i, figs. 6, 6a, 6b. 
1820. Caryophyllia solitaria, Le Sueur, Mem. Mus. Hist. Nat. Paris, t. vi, p. 274, pi. xv, fig. 1. 
1861. Astrangia neglecta, Duchassaing & Michelotti, Mem. Corall. Ant., p. 79 (of reprint), pi. x, figs. 3, 4. 
1861. Astrangia granulata, Duchassaing & Michelotti, ibid., p. 79, pi. ix, figs. 13, 14. 
1871. Astrangia solitaria, Pourtales, 111. Cat. Mus. Comp. Zool., No. iv, p. 79. 
1880. Astrangia solitaria, PourtalSs, Mem. Mus. Comp. Zool., vol. vn, No. 1, pi. XII, figs. 8-12. 
The two specimens representing this variety are so different from the usual form of the species 
that I at first considered it a distinct species and drew up the diagnosis accordingly. A more detailed 
comparison lias caused me to think that it may be only an aberrant variety of A. solitaria. The single 
corallite, taken as the type, will be described, and then a comparison will lie made with the other 
specimen. This corallite is turbinate, 14 mm. tall; the greater diameter of the calice, 7 mm. ; lesser, 6.5. 
