NOTES ON SOME BRITISH NUDIBRANCHS. 357 



a black spot at the tip ; and there are two or iu some places three rows 

 of such papillre on the sides. Tiie rhinophore sheaths are ample in 

 front, but slit behind, and bear two or three papillte (Fig. 14.). All 

 these papilla? are too much developed to be called tubercles, and are 

 half or even three-quarters of a millimetre in height. The anal 

 papilla is very large. 



The buccal mass is very small and the radula minute, though it con- 

 tains more than 100 closely fitting teeth. The teeth bear at least three 

 denticles on each side of the central cusp and perhaps other accessory 

 denticles and ridges ; but it is diflicult to get a distinct view of any 

 tootli, even under the highest pinver. 



This form is probably a variety of D. innnatifida with the tubercles 

 more developed. All the proportions of the animal are larger than 

 those described by A. & H., and it is possibly merely the normal adult 

 form. 



BERGHIA CCERULESCENS (LAURILLARD). 



The specimen preserved at Plymouth under this name is really 

 a Facelina coronata, and has neither the rhinophores nor the dentition 

 of Berghia. BcrgJiia should probably be removed from the list of the 

 British fauna, as there appears to be no other record of its occurrence. 



The cerata are set in eight groups. At the interior end of several of 

 them (that is at the sides of the clear space in the middle of the back) 

 are a number of quite small tubercular papilhe, hardly half a millimetre 

 high, and similar ones are found here and there in the middle of the 

 rows. These tubercles probably represent cerata which have been 

 bitten off and are in process of reproduction. See Bergh, Bcitrdge zur 

 Kcnntniss der yEolidiaden, v. p. 826. Alder and Hancock mention that 

 the animals of this species (F. coronata) have the habit of eating one 

 another's cerata. 



-ffiOLIDIELLA, BERGH. 

 EOLIS ANGULATA, A. & H. 



I think that the Folis angulata of Alder and Hancock (Monogr., 

 Fam. 3, pi. 23) is really referable to this genus, and merely a broad 

 and probably inunature specimen of yEolidtella glauca. Professor 

 Herdman kindly gave me a specimen from Port Erin iu the Isle of 

 Man which was identified liy him when alive as possessing the ex- 

 ternal characters of Eoli^i (ingidata. The preserved specimens also 

 si;enietl to have these characters, as far as they could be recognized, 

 except that the cerata were more numerous. When dissected it was 

 found to possess the jaws and characteristic radula of ^ulidiclla 

 glauca. 



