342 PROCEEDINGS OF THE MALACOLOGICAL SOCIETV. 



smooth, the branchiae tripinnate, the tentacles grooved, the teeth 

 hamate, and a prostate is present ; tliere is no armature on the hibial 

 cuticle or genitalia. The genus appears to oomprise the following 

 species : — 



1. Aphelodoris antillemis, Bergli. 



2. A. Cheesemani, n.n. (= Boris Inctaosa, Cheesem.). 



3. A. (?) ^purpurea, Bergh. 



4. A. i?)^ pallida. 



5. A. luetuosa, Bergh. 



6. A. (??) 1 bnmnca, Bergh. 



7. A. affinis, n.sp. 



The two species (J. Cheesemani and A. affinis) now added to the 

 genus have the typical characteristics as dehued by Bergh in describing 



A. antilknsis, but it might be useful to enlarge the definition of the 

 genus and make it a convenient, if temporary, receptacle for forms with 

 a smooth dorsal surface, hamate teeth, and no armature on the labial 

 cuticle or genitalia such as the Doris pseudida, B. perplexa, and 



B. glabella, described by Bergh in his Opisthobranchs of South Africa. 



Aphelodokis Cheesemani, n.n. 



Boris luetuosa, Cheeseman : Trans. New Zeal. Inst., vol. xiv, p. 218, 



1882. 

 ? = Archidoris varia, Basedow & Hedley: Trans. 11. Soc. S. Australia, 

 vol. xxix, p. 150, 1905. See also Bergh, Aphelodoris luetuosa: 

 Mai. Tint, in Semper's Hcisen, vi, 2, p. 75, 1905. 



One specimen labelled "■Boris luetuosa, Cheeseman — Auckland 

 harbour." It has the general appearance and high, thickset shape 

 of a stout Chrumodoris. Tlie colour is uniform pale yellow ; the 

 length 33-5 mm., the breadth 16 mm., and the height 15-5 mm. 



The texture is quite smooth, and not granulate. The dorsal surface, 

 as preserved, shows various wrinkles and swellings, but they are 

 perhaps not natural. The sheaths of the rhinophores are 2-5 mm. 

 high, plain and entire, not tuberculato or denticulate. The branchial 

 pocket is surrounded by a flap which ma^^ have formed a raised border 

 in life, but as preserved is reflexed and flattened. Near the pocket 

 are some lumps, but these too may perhaps be due to distortion. The 

 branchiae are white outside, dull dark-green inside. The two hind- 

 most on cither side are deeply cleft, and according as they are reckoned 

 as one bifid plume or two plumes the whole number will be 5 or 7. 



The tentacles are thick with a short distinct groove at the tip, and 

 are connected with the foot by a fold. The foot is broad. Its anterior 

 margin is entire and not grooved ; the lateral margin ample ; the tail 

 short. The mantle-edge is rather narrow and turned upwards, so as 

 to show the sides of the body. 



The blood-gland is thick and wliite. The central nervous system is 

 enclosed in a thick capsule, granulated, and so concentrated that the 

 divisions between the ganglia are only faintly marked. The com- 

 missures are thick and short. 



The notes of iuterrogation are as marked by Bergh. 





