Intertidal Invertebrates of the Monterey Bay Area, California Compiled & photographed by Gary McDonald, Long Marine Laboratory, University of California, Santa Cruz |
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Balanus glandula Darwin, 1854 | |
Acorn Barnacle | |
Arthropoda: Crustacea: Maxillopoda: Thecostraca: Cirripedia: Thoracica: Sessilia: Balanomorpha: Balanoidea: Balanidae | |
Geographic Range: Aleutian Islands, AK to Bahia de San Quintin, Baja California, Mexico; Argentina;Japan | Synonyms: |
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Carmel Pt., Monterey Co., CA; 16 Feb 2008. |
Description: Shell white to greyish-white, variable in shape & texture (may be smooth or ribbed). Rostrum overlaps adjacent plates. Scutum not prolonged into beak. The inner surface of the terga & scuta is black and the junction between them is sinuous. |