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. 



Peromelia (Laganum) rubra Doderlein, 1885. Arch. f. Xaturg., 51, 1, p. 105. 



Plates 124, figs. 18-20; 142, figs. 5-7. 



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

 figs. 18, 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, now 



Laganum minutum de Meijere, 1904. Siboga Ech., p. 125. 



I have not seen this species which is known only from the Sulu Archipelago. 

 Peronella analis, comb, now 



Laganum anale de Meijere, 1904. Siboga Ech., 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 Agaseiz, 1841. Mon. Scut., p. 123. 



Laganum (Peronella) peronii Gray, 1866. Cat. Rec. Ech. breg., p. 13. 



Plate 124, figs. Jl. J J. 



As this is the type of the genus and was not studied by de Meijere. a few 

 notes may be given here. The component rods of the miliary 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 



