SYSTEMATIC INDEX. 



39. MONTACUTA, MONTACUTA, . . . 220, 301 



109. Montacuta bidentata. Bidentate Montacuta, . 220, 302 



110. Montacuta oblonga. Oblong Montacuta, . 220,302 



111. Montacuta glabra. Smooth Montacuta. . 220,303 s 



112. Montacuta substriata. Substriated Montacuta, . 221,303 



40. CORBULA. CORBULA, .... 221,303 



113. Corbula inequivalvis. Common Corbula, . 221,303 



FAMILY XII. PHOLADINA, . 221, 304 



41. PHOLAS. BORER OR PIDDOCK, . . . 221,304 



114. Pholas crispata. Curled Piddock, . 221, 306 



115. Pholas Candida. White Piddock, . . 221,306 



CLASS V. BRACHIOPODA, . 307 



CLASS VI. APODA, . 307 



ORDER I. APODA HETEROBRANCHIATA, 309,310 



FAMILY I. ASCIDIINA, . 309, 310 



I.CYNTHIA. CYNTHIA, .... 309,310 



1. Cynthia tuberosa. Tuberous Cynthia, . . 309,311 

 2. ASCIDIA. ASCIDIA. ASCIDIA, . . . 309,311 



2. Ascidia Prunum. Plum-like Ascidia, . . 309, 312 



3. Ascidia opalina. Opaline Ascidia, . . 309, 312 



4. Ascidia intestinalis. Intestinal Ascidia, . 309, 313 



MALENTOZOA. CIRRIPEDIA, 351 



ORDER I. MALENTOZOA PEDUNCULATA, 353,356 



FAMILY I. LEPADINA, . 353, 356 



1. LEPAS. BARNACLE, .... 353,356 



1 . Lepas anatifera. Common Barnacle, . . 354,357 



2. Lepas striata. Striated Barnacle, . . 353, 357 



3. Lepas sulcata. Grooved Barnacle, . . 353, 358 



2. SCALPELLUM. LANCET-BARNACLE, . . . 354,358 



4. Scalpellum vulgare. Common Lancet-Barnacle, . 354, 359 

 ORDER II. MALENTOZOA SESSILIA, 354,359 



FAMILY I. BALANINA, . 354, 359 



3. BALANUS. ACORN-SHELL, .... 354, 360 



5. Balanus balanoides, Smooth Acorn-Shell, . 355, 360 



6. Balanus Cornubiensis. Dwarf Acorn-Shell, . 355, 361 



7. Balanus costatus. Kibbed Acorn-Shell, . 355, 362 



8. Balanus communis. Common Acorn-Shell, . 355, 362 



9. Balanus elongatus. Elongated Acorn-Shell, . 355, 363 



10. Balanus candidus. White Acorn-Shell, . 355,364 



4. CLITIA. WART-SHELL, .... 355,365 



11. Clitia Verruca. Common Wart-Shell, . . 355,365 



5. CETOPIRUS. WHALE-BARNACLE, . . . 356,365 



12. Cetopirus baljenaris. Common Whale-Barnacle, . 356, 366 



