ELIOT : NUDIBRANCHS FROM 'I'HE IN'DO-rACIFIC. 239 



One specimen from Maskat, captured in 10-20 fathoms. The notes 

 on the living animal say that the body was of a pellucid bluish tint 

 with patches of dark sepia (almost black), and longitudinal lines of 

 yellow. The rhinophores were tipped with lake. The sole of the 

 foot was blue with a yellow border. 



The preserved specimen is 13 mm. long and 6 broad, but much 

 macerated, nearly all the skin, including the gills and side lamellse, 

 being lost. All that can be made out is that the rhinophores are 

 dark brown with vertical laminse, and that the back bears traces of 

 thin longitudinal stripes of bright metallic white with a yellowish 

 tinge. 



The jaws are of a clear pale yellow, with 4-6 rows of distinct 

 blunt denticles. 



The radula consists of 35 rows, with from 30-35 teeth on each side 

 of the rhachis. The rhachidian tooth is rather broad, with four 

 strong denticles on each side of the central cusp. The first lateral is 

 rather large and clumsy, with four small irregular denticles on the 

 outside. The rest are hamate, rather slender and elongate. The 

 first five or six of them bear one or two small denticles near the apex. 

 The remainder are smooth. 



The coloration and dentition seem to indicate that this is P. 

 seinperi, though if I correctly understand Bergh's description, the 

 jaws bore no denticles in the specimens examined by him. The 

 species is recorded from the Philippines. 



Pleurophyllidia taeniolata Bergh. (PI, V., fig. i). 



Bergh, "Bidrag Monogr. Pleurophyllidierne," pp. 42-46. 



One specimen from Maskat, captured in 37-38 fathoms. A sketch 

 of the living animal represents it as moderately elongated. The back 

 is pale bright yellow, marked with purplish lines. The side lamellce 

 are reddish brown. The sides of the foot and the tentacular shield 

 are purplish black. 



The preserved specimen, which is slightly bent, is about 42 mm. 

 long and 21 mm. broad. The colour of the back is greyish violet of 

 various shades, in places very deep and nearly black. The mantle, 

 tentacular shield and foot are all edged with pale yellow. Down the 

 back run 34 pale yellowish stripes, of which 19 are much more dis- 

 tinct than the others. They are not quite straight or parallel to one 

 another, and sometimes meet and unite. It will be noticed that 

 whereas in the sketch the ground colour appears to be yellow with 

 purple lines, the relative preponderance of colours is reversed in the 

 preserved specimen. This is a not uncommon phenomenon in pre- 

 served Nudibranchs. The foot is whitish with a faint pinkish 

 tinge. The gills and side lamellse are greyish, with traces of black 



