356 BULLETIN 93, UNITED STATES NATIONAL MUSEUM. 



PLATE 67. 



FIGS. 1-1&. Platylepas hcxastylos. Delaware Bay. Top, profile, and basal 

 views, the basis removed. Page 285. 



Ic. P. hcxastylos. Basal view of one of the same lot, the basis in 

 place. 



2. P. h. ichthyophila Pilsbry. Rostrum of type. Page 287. 



3. P. hcxastylos. Osprey, Florida. Typical Rostrocarinal diam- 



eter of largest specimen, 17 mm. Page 286. 



4. P. hcxastylos, variety. Sicily. Diameter, 8.5 mm. Page 287. 



PLATE 68. 



FIGS. 1-lb. Rtomatolepas prtrgustalor Pilsbry. Dry Tortugas, Florida. 



Type. Upper, lateral, and basal views. Page 289. 



2, 2a. Stomatolepas elcgans (O. G. Costa). Photographic copies "from 



Costa's plate. Page 289. 



3-3&. Cylindrolcpas (lanciniana Pilsbry. Type. Inside of rostrum ; 



lateral and top views. Page 288. 



PLATE 69. 

 Hcxclasma amerlcanum Pilsbry. Page 330. 



FIGS. 1-lg. Opercular valves, penis, and three views of the walls of the type. 



2. Carina of another specimen. 

 3-3&. Carina, lateral compartment, -and rostrum of other specimens. 



PLATE 70. 

 Chthamalus fragilis Darwin. Page 297. 



FIGS, la, 1&. Clearwater Harbor, Florida. Dorsal and lateral views of speci- 

 men which grew on a reed. 

 Ic, Id. Scutum and tergum of same. 



2. Ocean City, New Jersey. Dorsal view of specimen taken from a 



Balanus balanoidcs. 

 3-3c. Varadero Beach, Cuba. Opercular valves and group growing on 



an oyster. 

 4. Clearwater Harbor, Florida. Part of a group on a reed. 



PLATE 71. 



FIGS. 1, Ib. Chthamalus stcllatus (Poll). Scutum, tergum, and a group of cor- 

 roded specimens on a stone, enlarged. Naples. Page 302. 

 2, 2a, 2b. Scutum, tergum and a group of tubular specimens. England. 

 3, 3a. Two conic individuals from Exmouth. 

 4, 4a. Scutum and group of specimens on a living Thais hccmastoma. 



Fayal, Azores. 



5, 5a,5b. Chthamalus Stella tits angustitergum Pilsbry. Group of six speci- 

 mens of different ages, X 3 ; scutum and tergum. Bahamas. 



Page 305. 



6, 6a. Chthamalus stcllatus bisinuatus Pilsbry. Scutum and tergum of 

 the type. Santa Catharina Island, Brazil. Page 306. 



