NO. 3663 CIRRIPEDIA—ROSS 19 
muscle pit of the scutum is circular in outline and the spur faciole of 
the tergum is extremely narrow and apparently closed. To judge 
from the studies of earlier workers and from specimens on hand, it 
appears that the degree and length of closure of the longitudinal 
furrow of the tergum is highly variable and of little diagnostic value 
in this species. In regard to the outline of the adductor muscle de- 
ression, this too appears to be quite variable and no doubt dependent 
on the age of the specimen, among other things. Consequently, the 
author unhesitantly considers Kolosvdry’s taxon a junior synonym 
f B. stultus and not worthy of recognition. 
Although Darwin (1854, p. 216) reported B. stultus from Singapore 
las well as from the West Indies, the western Pacific record obviously 
is an error. 
Distrisution.—Balanus stultus ranges from the Dry Tortugas 
(Nilsson-Cantell, 1929) and Florida (Pilsbry, 1953) to Cuba (Kolos- 
dry, 1966) and Curagao (Pilsbry, 1927; Nilsson-Cantell, 1939). 
Pilsbry (1927) reported it growing on Millepora aleicornis Linnaeus, 
and Weltner (1897) found it to be living on M. complanata. 
| Summary 
| 
Four species of intertidal cirripeds, reported for the first time from 
the island of Dominica, West Indies, are described and illustrated. 
Chihamalus angustitergum and Tetraclita stalactifera are elevated to the 
rank of species. Tetraclita divisa is shown to be of circumtropical 
distribution, and 7. divisa subquadrata is accordingly placed in 
synonymy with the nominate subspecies. Balanus stultus is removed 
from the subgenus Conopea and assigned to Megabalanus on the basis 
of facies similarity and the presence of tubes in the radi. The subfamily 
Tetraclitinae is elevated to the rank of family. 
