1002 SIR C. ELIOT ON THE NUDIBRA^'CHS [Dec. 11, 



denticles beneatli the smaller prong. The innermost cannot be 

 seen plainly, but they appear to be lower and broader than the 

 rest, as is usual in this genus, and are probably denticulate on 

 both sides. The outermost teeth also cannot be clearly seen. 



Doris maccarthyi Kelaart. 



= Casella maccarthyi (Kelaart). 

 C. chtcta Bergh. 

 The buccal parts confirm this identification. The labial 

 armature is composed of hooked rods, bifid in parts but not 

 everywhere. The radula is a close pavement of very minute 

 teeth with a formula of about 250 x 60.0.60. Owing to the teeth 

 being erect it is difiicult to see the denticles, but there are at 

 least six on the outer side and probably more. The innermost 

 teeth have also at least 2 (probably 2-4) denticles on the inner 

 side. The outer teeth are smooth. 



Doris apiculata A. & H. 1. c. p. 123. 



=^JIalgercla apiculata (A. & H.). 

 1 = Halgerda punctata Farran, 1. c. pp. 339-340. 



One radula with the note " no collar." The hinder part is in 

 disorder, but there appear to be about 33 rows, which in the 

 midde of the radula contain 45-50 teeth on either side of the 

 rhachis. Those near the centre are more spaced than the rest ; 

 they have long bases and low hooks, and the innermost point 

 towards the rhachis. The general effect is that there is a large 

 bare space in the middle of the radula with a few teeth in it. 

 The teeth increase in size outwards up to the middle of the row. 

 The hooks are strongly bent, and the bases rather long, though 

 proportionally not so long as in the teeth near the rhachis. The 

 last 3-4 teeth are degraded and almost spoon-shaped. In a few- 

 cases the upper edge of the outermost tooth bears one or two 

 irregular jags. 



This animal will probably prove to be identical with the later 

 Halgerda punctata of Farran. Both the radula and the external 

 colour agree fairly well. The mantle of D. apiculata is said to 

 have borne " elevated conical centres, each of which bears a 

 delicate style or filament," and the plate represents the same 

 character. The preserved specimen of //. punctata bore simple 

 tubercles, which Avere described as papillte in the living animal. 

 A more definite description is desirable, but it is quite possible 

 that the filaments mentioned by Alder and Hancock are the same 

 as these papillae. 



Doris tormosa A. k, H. 



= Platydoris foronosa (A. & H.). 

 Formula of radula about 50x120.0.120. The teeth are 

 hamate, moderately slender, and increase in size outwards. The 

 innermost are lower than the rest and cross one another, meeting 



