194 36 



The pharyngeal cone (bulbus pharyngeus) of a length of 0'5 mm filled almost 

 completely the buccal tube ; the secondary salivary gland [gland, ptyalina) was situated 

 below the latter. The bent continuation ibulbus pharyngeus , oesophagus) was 2 mm long, 

 cylindric, as usual with triangular aperture; at the hinder end of this the small salivary 

 glands. The narrower hinder end was joined by the likewise bent, thickwalled, somewhat 

 thicker continuation (oesophagus, the first stomach), which had a length of 3™", and 

 opened somewhat tapering into the cavity of the brown gray liver. 



The specimen seemed not to be sexually developed, and the penis was not seen. 



Phyllidiidae. 



Comp. R. Bergh, 1. e. 1892. p. 1123 — 1129. 



Phyllidiella, Bgh. 



1. Phyllidiella nobilis, Bgh. Var. 



Phyllidiella nobilis Bgh. R. Bergh, Bidrag til en Monographi af Phyllidierne. Naturbist. Tidsskrift. 3 R. V. 

 1S69. p. 485—492; 512—513. Tai. XXIV, Fig. 8— 12. 

 — Malacolog. Unters Heft. 10. 1876. p. 383 ; — Heft. XVI, 2. 1889. p. S60— 862. Taf. LXXXIV, 

 Fig. 11 — 18; — Heft XVII. 1890. p. 973. Taf. LXXXV, Fig. 4; Taf. LXXXIX, Fig. 48. 

 — — R. Bergh, neue Beitr. zur Kenntn. d. Phyllidiaden. Verh. d. k. k. zool. bot. Ges. in 



Wien. XXV. 1876. p. 661—662. 

 Phyllidia spectabilis, Collixgwood. On some new species of nudibranchiate moll. Trans. Linn. soc. II, 2. 

 1881. p. 136. pl.X, flg. 19— 23. 



PI. II, Fig. 15. 



The specimen examined here, and figured, when living, by Dr. Mortensen, was 

 taken on Jan. 18 th , 1900, at the southwestern point of Koh-Chang, on coral bottom, at 

 a depth of 1 fathom. 



The length of the living animal was ib mm . The animal, with regard to colour, 

 agreed with the figure given by Brock (1. c. Taf. LXXXV, Fig. 4), in the arrangement of 

 the dorsal figures it agreed rather well with my figures (I.e. 1869. Tab. XXIV, Fig. 9, and 

 1. c. 1890. Taf. LXXXIX, Fig. 48). 



The specimen, which was well kept in spirit, had a length of ll mm , by a 

 breadth of 4°™, and a height of 2 mm . All the three figures of the margin of the mantle 

 brim, as well as those of the front and of the tail , as of the fore part of the back , were 

 of a dull, wax-yellow colour; the figures of the middle and hinder parts of the back were 

 greenish white, all the figures showed whitish tubercles. The velvet black colour separa- 

 ting the figures was in this variety of the species not at all found in the dorsal figures, 



