BULLETIN OF THE UNITED STATES FISH COMMISSION. 
180 
Family BALANIILF. 
Balanus (species ?). 
Several specimens belonging to this genus were found in the collection. A single specimen 
encrusted by a millepore coral from Mayaguez, an imperfect specimen of another (?) species collected 
off Puerto Real, and three or four apparently young specimens of probably a third species from Boca 
Prieta — these comprise the representatives of the genus Balanus. Considering the limited number of 
the specimens, their undeveloped and imperfect condition, and the well-known difficulties of making 
accurate identifications of species in this variable genus, it is thought best not to record any guesses at 
identification of the species of Balanus. 
(Darwin, Monograph of the Cirripedia. ) 
Tetraclita porosa Darwin. 
Two specimens. Locality not recorded. Varieties of this species have been previously reported 
as common near the West Indies and the Caribbean Sea. 
(Darwin, Monograph of the Cirripedia.) 
