432 PEECI SLADEN TRUST EXPEDITION. 



An examination of the original specimens has convinced me that the animal described 

 by me as Fracassa tuberculosa (Proc. Zool. Soc. 1903, vol. ii. p. 371) is really 0. miamirana. 

 The outer teeth as well as the inner are often, if not always, denticulate in this species. 

 The genus Fracassa, Bergh, is represented only by one specimen in the Copechagen 

 Museum. Its appearance may have altered with age, but in its present condition it hardly 

 supports Bergh's statement that " Die Pracassen stimmen im Ausseren fast mit den 

 Phlegmodoriden iiberein." As the specimen stands, it does not seem to me necessary to 

 separate it genericaUy from Discodoris and the genus Fracassa requires confirmation. 



20. Orodoris striata, Eliot. 

 Eliot, in Proc. Zool. Soc. 1904, vol. ii. p. 269. 



Pour specimens, labelled " Praslin, reef." They are about 100 mm. long and 80 mm. 

 broad. When first received they showed considerable traces of light green and pink 

 arranged in thin stripes, but this coloration subsequently vanished. 



Though the specimens are large and in some ways well preserved, yet they have clearly 

 all been distorted by the preserving fluid in different ways, and it is not easy to deduce 

 the original shape. Probably there was a central ridge bearing three large tubercles (as 

 much as 12 mm. high and 10 mm. broad at the base), and on either side of this ridge 

 two or three rows of tubercles. There is also at least one large tubercle behind the 

 branchiae, and tlie whole dorsal surface, including the tubercles, is covered with low 

 ridges, often broken up into short lines. The general external characters, as far as they 

 can be determined, are much like those described by me (I. c). The mantle-margin is 

 thick, fleshy, and very broad. The foot is narrow. The anterior part of the foot and the 

 mouth are swollen and distorted in all specimens, but apjiarently a ridge runs from the 

 mouth on either side downwards to the foot. The branchiae are seven or eight, and very 

 large. The anterior median plume is connected with the anal papilla by a lamina. The 

 margin of the pocket is somewhat raised and bears irregular indistinct lobes. 



The labial armature is a mass of bright yellow bent rods. In the specimen dissected 

 the radula consisted of 130 rows, with about 150 teeth on either side of the rhachis. 

 Until carefully examined the teeth appear to be simply hamate, but closer scrutiny 

 shows that those next to the rhachis bear two denticles on the inner and three on 

 the outer side. Of the remaining teeth, the first twenty or so have a ridge on the outer 

 side which bears a varying number (generally about 10) of irregular denticles. The 

 remaining teeth appear to be smooth. 



I think that these specimens are referable to Orodoris striata, recorded from Zanzibar, 

 and that the species is distinct from O. miamirana. 



21. Miamira magnifiea, sp. nov. (Plate 25. figs. 10, 11.) 

 See accounts of M. nobilis or sinuata by Bergh in Jour. Mus. Godeffroy, Heft viii. 1875, pp. 53-63 ; 

 id. in Scraper's Reisen, vi. ii. 1904 ; id. Notes from the Leyden Museum, 1887, p. 309, pi. vi. 

 fig. 10 ; and by Eliot in Proc. Zool. Soc. 1904, vol. i. p. 405. 



One specimen from Seychelles, 31 fathoms. 



