A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.

Chapter 257: PLATE 4. Genus—BALANUS.

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About This Book

This work presents a detailed monograph on the sub-class Cirripedia, focusing on various species of barnacles, including the Balanidæ and Verrucidæ. It includes comprehensive descriptions, classifications, and illustrations of these organisms, contributing to the understanding of their biology and taxonomy. The author examines their anatomical features, reproductive habits, and ecological roles, providing insights into their adaptation and evolution. The text serves as a significant resource for naturalists and biologists interested in crustacean studies, reflecting the author's meticulous research and dedication to the field.

PLATE 4.
Genus—BALANUS.

Fig. 1 a and 1 b, Balanus spongicola, external views of scutum and tergum; 1 c, var. of the tergum, from a specimen from the Cape of Good Hope; 1 d, var. of the tergum from the West Indies.
2, Balanus lævis.
2 a,””fossil, elongated var., showing lower part of basal cup filled up with a cancellated mass.
2 b and 2 c,””scutum, external and internal view of.
2 d and 2 e,””scutum (variety), internal and external view of.
2 f,””scutum (variety), external view.
2 g,””tergum, external view.
3 a, Balanus perforatus, scutum, internal view; 3 b, tergum, internal view; 3 c, tergum, var. external view.
4 a, Balanus concavus (var. from Panama), scutum, internal view; 4 b, scutum, external view; 4 c, tergum, external view; 4 d, tergum, fossil, Coralline Crag; 4 e, tergum, fossil, Italy.