OPISTHORRANCHTATE MOLLUSCS.. 363 



PhyUaplysia pelhusida, a. sp., 19th to 22nd lateral teeth from radula. x 320. 

 rods from jaw plates, x 310. 



,, ,, median and 2 lateral teeth from radula. x 320. 



9th to 12th lateral teeth from radula. x 320. 



7 outermost teeth from radula. x 310. 

 Aph/sielhi mollis, n. sp., lateral teeth from radula, 6th and 7th from margin, x 310. 

 rods from jaw plates. 



,, 3rd to 5th teeth from centre of radula. x 310. 



,, 32nd to 35th teeth from centre to radula. x 310. 



,, median and 1st lateral teeth from radula. x 310. 



PLATE V. 



Phijllaplysia pellueida, n. sp., shell, dorsal view, x 7. 

 Aplysidla mollis, n. sp., shell, ventral view. x 7 "5. 



,, calcareous layer of shell, dorsal view. x7 - 5. 



Dolabrifera maillardi, Desh., animal, dorsal view, x 2. 



,, , seen from right side, x 2. 



,, teeth from radula, middle of lateral row. x 315. 



lateral tooth from radula, 19th from centre, x 315. 



apex of shell showing spire. 



shell, ventral view, x 15. 



median and 1st lateral teeth from radula. x 315. 



Dolabrifera marginata, n. sp., animal, dorsal view, x 2. 



,, median and 1st to 3rd lateral teeth from radula. x 310. 



lateral tooth from radula, 3rd from margin, x 310. 



22nd and 23rd lateral teeth from radula. x 310. 



,, ,, shell, x 15. 



Dolabdla scapula, Mart., lateral teeth from radula. x 74. 



median and 1st to 3rd lateral teeth from radula. x 74. 



Notarchus ceylonicus, n. sp., animal, dorsal view, x 2. 



rods from jaw plates, x 130. 



9th and 10th lateral teeth from radula. x 114. 



median and 1st and 2nd lateral teeth from radula. x 114. 



24th and 25th lateral teeth from radula. x 114. 



outermost 3 teeth from radula. x 310. 



Phvmbranchuu hrocki, Bgh., animal, dorsal view, x 2. 



,, from left side, x 2. 



5 innermost teeth from radula. a = innermost. xll6 



rods from margin of jaw plate, x 320. 



12th and 13th lateral teeth from radula. x 116. 



PLATE VI. 



Fig. 1. Pleurobranchus hornelli, n. sp., shell, membranous margin not shown, x 13. 

 2. 9 outermost teeth from radula. x 320. 



3. 7 innermost teeth from radula. x 320. 



4. ,, portion of jaw plate, x 300. 



5. section of mantle. 



3 A 2 



