310 
already for a long time in botany, in biometrical terminology, and 
for years also by several zoologists. If, on the other hånd, a group 
of special variants is found with no affinity to biophysical factors, 
and thus not directly geographically bound, this is among the same 
scientists accepted as a „subspecies 44 , or rather „elementary spec¬ 
ies 44 . This is the reason why I cannot follow Pilsbry in his 
nomenclatorial course in his dividing up of the species, although I 
fully agree with him in his realities. Indeed, his treatment of the 
finer systematics especially of the Balani is masterly and ought to 
be followed by every systematist. 
Subgenus Megabalanus Hoek. 
Balanus tintinnabulum Linné. 
Forma cuccopoma Darwin. 
Taboga, Panama. On a buoy. 7/XII 15. One cluster consisting of four 
large specimens. 
Forma californica Pilsbry. 
Off Redondo, Calif. 30 fathoms. 25/IX 15. Several specimens on dead 
shells of gastropodes, and lamellibranchiates. 
San Pedro, Calif. On the coast. 27/IX 15. One small, but typical spec- 
imen together with Tetraclita squamosa , and Chtamalus fissus. 
Balanus campbelli Filhol. 
Perseverance Harbour, Campbell Island; under stones at low tide. 9 XII 
14. One specimen. 
The original description of F i 1 h o 1 (1885), cited in extenso by 
Gru vel (1905), is rather deficient; nevertheless no doubt can 
arise as to the identity of the present specimen, which, moreover, 
is from the very same locality as Filhol’s originals. The incom- 
pleteness of earlier descriptions, and the deficiencies of Gruvel’s 
too small figures make renewed investigations of the species desir 
able. The basal parts, I am Sorry to say, are wanting in the one 
-specimen at hånd; it therefore shall be the task ofa future student 
to give the details as to these parts of the barnacle. 
The compartments are greyish or dirty brownish-white with 
prominent, radiating ribs; the upper margin of the radii is parallel 
