54 HAWAIIAN AND OTHER PACIFIC ECHINI. 



Station 4885. Between Nagasaki and Kagoshima, Japan. Bott. temp. 

 61.7°. 53 fms. Dk. gy. s., brk. sh. 

 Bathymetrical range, 45-70 fms. 

 Twelve specimens. 



Peronella rubra. 



Peronella iLaganumi rubra Doderlein, 1SS.5. Arch. f. Naturg., 51, 1, p. 106. 



Plates 124, figs. lS-20; 142, figs. 5-7. 



The miliary spines are like those of pellucida; the component rods (PI. 124, 

 figs. IS, 19) being abruptly expanded at the tip. The pedicellariae are all small 

 and are best designated as triphyllous; the blades are coarsely dentate (PI. 124, 

 fig. 20) and are only .04-.08 mm. long. No tridentate or ophicephalous pedi- 

 cellariae could be found. The Albatross did not take this species. The 

 specimens figured are in the M. C. Z. collection. 



Peronella minuta, comb. nov. 



Laganum minutum dc Mcijere, 1904. Siboga Ech., p. 125. 

 I ha^•e not seen this species which is known only from the Sulu Archipelago. 



Peronella analis, comb. nov. 



Laganum anale de Meijere, 1904. Sibog.\ Eoh., p. 129. 



Having one of the Siboga specimens at hand, I can confirm de ^Meijere's 

 observations. I also found triphyllous pedicellariae. This species was taken 

 by the Siboga at three widely separated stations in the Dutch East Indies. 



Peronella peronii. 



Laganum peronii Agassiz, 1S41. Mou. Scut., p. 123. 



Laganum (Peronella) peronii Gray, 1S55. Cat. Rec. Ech. Irreg., p. 13. 



Plate 124, figs. 21, 22. 



As this is the type of the genus and was not studied by de Aleijere, a few 

 notes may be given here. The component rods of the mihary spines are abruptly 

 expanded and the terminal margin is rather finely serrate. Aside from some 

 ophicephalous pedicellariae, the valves of which have broad and very blunt 



