156 Miscellaneous. 



AcTiNozoA. Prof. Verrill thiuks (aud I quite agree with him) that 

 the St. -Lawrence Pennatula is a well-marked variety of Pennatula 

 aculeata, Danielssen. This latter species he considers to be distinct 

 from P. phof^phorea. My St.-Lawrence specimens vary so much in 

 their characters that I am not yet satisfied on this latter point. 

 For the present the St.-Lawrence specimens may be provisionally 

 called Pennatula aculeata, Danielssen, var. canadensis. Those who 

 accept Kolliker's views as to specitic differences in this group 

 would regard the Canadian sea-pen as one of the many protean 

 forms of P. phosphorea. 



Urticina digitata (Miill.). Recognized by Prof. Verrill among speci- 

 mens dredged in 120 fathoms off Bear Head, Anticosti. 



Zoanthus (sp.) is Epizoanihus amcricanus, teste Verrill. 



MoLLtrscA. Dentalium ahyssorum, Sars. Adult but dead specimens 

 of a Dentalium dredged last year were referred to this species. 

 Having since taken the same shell alive in all stages of growth, 

 I now doubt the correctness of this identification. It is never 

 pentagonal when young ; and I believe it is the shell originally 

 described by Dr. Gould, though eri'oneously, as Dentalium dentale, 

 his specimens being few and very imperfect. Its proper name is 

 Dentalium occidentale, Stimpson, a perfectly good and distinct 

 species, nearly related to D. ahyssorum — widely different from En- 

 talis striolata, which has not yet been found north of the Bay of 

 Chaleurs. 



Sipho Sarsii, Jeffreys. The proper name of this shell seems to be 

 Sipho curtus (Jeffreys). 



Nitophyllum litteratum, a new British Alga. 

 By Prof. T. G. Agaedh. 



This seaweed was received from Mrs. GriflSth as Nitophyllum 

 Hilli(v: but it is very different in the form of the leaflets ; the sori are 

 not dot-like and scattered as in that species, but linear-oblong or 

 variously shaped, scattered between the veins, looking, on the lower 

 lobes. Like letters or signs. 



*' N. litteratum, stipite brevi cuneato, in frondem venis dichotomo- 

 anastomosantibus obscuriusculis inferne venosam, cuneato-reni- 

 formem subpalmato-pinnatifidam abeunte lobis cuueato-linearibus 

 margine minute undulato-crenulatis, basi contractis, soris inter 

 venas seriatis figuras irregulares inter se plus minus eonfluentes 

 formantibus. 



" Hab. Ad littora meridionalia Angliae." — Lunds Univ. Arsshrift, 

 t. viii. p. 49. 



On a new Freshwater Tortoise from Borneo (Orlitia borneensis). 

 By Dr. J. E. Gray, F.R.S. &c. 



Orlitia. 

 Head covered with large plates, plai n- coloured ; lower jaw strong, 



