(■iAPiv\s'rHi{ |{I<;ticulatus. 35 



specimen from Hawaii, the form is somewhat intermediate between these two 

 (PI. 12-4, fig. 5), while in an adult Hawaiian specimen the blade is more gradually 

 expanded than in any of the others (PI. 124, fig. G). The difference between 

 this latter and the form found in the specimen from Reunion led me at first to 

 suppose they were different species but thorough examination of their other 

 characters and examination of the tridentate pedicellariae in a number of other 

 specimens compelled me to conclude that in this species these pedicellariae are 

 \-ery \ariable. The two specimens from Mauritius are notable, not only for 

 their peculiar pedicellariae but for their size; the larger is 7.3 mm. long, 59 mm. 

 wide, 19 mm. high and the margins of the test are 16 mm. thick. In the Revi- 

 sion 48 mm. is given as the maximum length for the species. 



The Albatross collected this species at numerous stations in the Hawaiian 

 Islands, but most of the specimens are young and a good many are bare tests 

 They range from 13 to 45 mm. in length. 



Station 3846. Off Lae-o Ka Laau Light, Molokai, Hawaiian Islands. 

 Bott. temp. 71.5°. 60-64 fms. Crs. br. s., sh., gr. 



Station 3847. Off Lae-o Ka Laau Light, Molokai, H. I. Bott. temp. ? 

 23-24 fms. S., st. 



Station 3848. Off Lae-o Ka Laau Light, Molokai, H. I. Bott. temp. 

 71.1°. 44-73 fms. S., gr. 



Station 3849. Off Lae-o Ka Laau Light, Molokai, H. I. Bott. temp. 67.6°. 

 43-73 fms. Crs. s., brk. sh., co. 



Station 3850. Off Lae-o Ka Laau Light, Molokai, H. I. Bott. temp. 

 71.7°. 43-66 fms. Crs. s., brk. sh., co. 



Station 3863. Off Mokuhooniki Islet, Pailolo Channel, H. I. Bott. temp. 

 60°-61°. 127-154 fms. Brk. co., crs. g., r. 



Station 3871. Off Mokuhooniki Islet, Pailolo Channel, H. I. Bott. temp.? 

 13-43 fms. Fne. wh. s. 



Station 3872. Off Mokuhooniki Islet, Pailolo Channel, H. I. Bott. 

 temp. 74.6°. 32-43 fms. Yl. s., p., co. 



Station 3874. Off Mokuhooniki Islet, Pailolo Channel, H. I. Bott. 

 temp. 75.3°. 21-28 fms. S., p., sh. 



Station 3876. Off Lahaina Light, Maui, H. I. Bott. temp. 74°. 28-43 

 fms. S., g. 



Station 3962. Off Laysan Island, H. I. Bott. temp.? 16 fms. Wh. s., co. 



Station 3982. Off Nawiliwili Light, Kauai, H. I. Bott. temp. 48.5°. 

 233-400 (?) fms. Crs. br. co., s., sh. 



