321 
Balanus crenatus Bruguiére. 
Dodds Narrows, Vancouver Island; on the coast at low water 28 V 15. 
In great numbers covering small stones. 
Departure Bay, Nanaimo; „the brachiopode-cave“, on Coastal rocks 10/VI 
15. Several specimens attached to gastropode shells and cal- 
careous worm tubes; together with Balanus rostratus. 
Balanus glandula Darwin. 
Departure Bay, Nanaimo; on the beach at low tide 3/VI 15. Several 
specimens on small stones; basis extremely thin, all but mem- 
braneous. 
La Jolla, Calif.; on Coastal rocks 21 /VIII 15. Some strongly eroded spec¬ 
imens together with Tetraclita squamosa , and Chtamalus fissus. 
Subgenus Hespe ri balanus Pilsbry. 
Balanus hesperius Pilsbry. 
Nanoose Bay, Nanaimo; ab. 10 fathoms 11/VI 15. Several specimens on 
gastropode shells, and on calcareous worm tubes. 
Pylades channel, Nanaimo; ab. 20 fathoms 6 VII 15. One small spec- 
imen. 
Some of the specimens from Nanoose Bay are placed on the 
very apex of snails houses and exhibit an almost globular shape 
with a small, narrow base. 
Subgenus Chirona (Gray) Pilsbry. 
Balanus amaryllis Darwin. 
Forma euamaryllis nov. 
Taba Bay, Mindanao; on the coral reefs 12/III 14. Four fine specimens 
on the naked axis of a gorgonarian. 
Off Jolo; 20—30 fathoms 20 III 14. Several specimens together with 
Balanus minutus, and Balanus amphitrite. 
The variant group which by Darwin (1853) is considered typ- 
ical is here named forma euamaryllis. — The specimens show some 
variation in as much as the segments of cirrus VI may sometimes 
have three or four pairs of anterior spines instead of the two pairs 
mentioned by Darwin; in some specimens the tufts of small 
hairs between the spines are also absent. 
Vidensk. Medd. fra Dansk naturh. Foren. Bd. 73. 
21 
