36 MolL 
MOLLUSCA. 
and non-articulated or imperfect ChitonidcB ; each again into two sub- 
divisions, regular and irregular. The imperfect Chitonidce are in the 
present age only few, but they predominated in the Carboniferous 
period. Rep. Br. Assoc., 45th meeting, p. 161. 
Hemiarthrwn, g.n. “ Valvoe terminates laminatee, hand articulatse ; 
laminae laterales obsoletae ; zona lanuginosa, porifera ; branchiae posticae.” 
H. setulosum, sp. n., Kerguelen Island. Carpenter, Bull. U. S. Mus. 
No. 3, p. 44. 
TEGTIBHANGBIA. ' 
Tornatellid.®. 
Ringicula leptochila |(Brugnatelli), sp. n., Aradas & Benoit, Couch, 
viv. Sic., Sicily. 
Bullion. 
Tornatina marice^ sp. n., J. E. T. Woods, P. R. Soc. Tasm. 1876, p. 27, 
Tasmania. 
Philine lima (Broun) = loveni (Malm) ; a living animal figured by 
Frielo, Forh. Solsk. Chr. 1876. 
APLYSIIDiE. 
Aplysia. On the purple fluid of several species in the Mediterranean ; 
Negri, Atti Acc. Rom. (2) iii. pp. 431-436, with a coloured plate [see 
suprdy p. 6]. 
PLEUROBRANCHIDiE. 
Haliotinella (Souverbie, 1875; Zool. Rec. xii. p. 159) sp. n., 
found also among sea-shells from St. Kitts, West Indies, perhaps an 
internal shell, near Lamellaria ; Lechmere-Guppy, J. de Conch, xxiv. 
p. 161. Morch thinks that Haliotinella is the internal shell of Pleuro- 
branchus and the above H. patinaria = that of Berthella quadridens 
(Morch.) J. de Conch, xxiv. p. 374. 
Berthelinia (Crosse, 1875) = Spiricella (Rang) ; Morch, J. de Conch, 
xxiv. p. 374. 
NUDIBUANGIIIA, 
PLEUROPHYLLIDIIbiE. 
' Pleurophyllidia'. the known species enumerated, and two now, P. van- 
couverensis, Vancouver Island, and cygnea, Swan River, externally and 
anatomically described by R. Bergh, Mai. Bl. xxiii. pp. 1-14, with 
anatomical figures, pi. i. 
Dorididje. 
Ilexahranchus pellacidulus^ locality unknown, and srie^ensis, Red 
