OPISTIIOnUANCHlATA. 
Moll. 65 
Plicobulla, p. 193, n. subg. of BullineUa , for f B. dumasi] n. ap., p. 194, 
Eocono, Loire Iuferiourc ; CossMann, Bull. Soc. Oucat France, v, 
figg- 
Ptychocylindrites, n. subg. of Cylindrites , type f Bulla conduit , Guir. & 
Oger. ; Cossmann (92) p. 72. 
Pug nus, n. g., for P. parvus, n. sp., Sydney Harb.; Hedley, Rec. Austral. 
Mus. ii, p. 106, fig. 
■\Ringicula turonensis, Turonian beds at Uohaux ; COSSMANN (92) p. 150, 
figg.: n. sp. 
Scaphander alatus, p. 676, ( Sabatia ) pustulosa, p. 677, off Hawaiian Is. ; 
Dall, P. U. S. Mus, xvii, figg. : n. spp. 
Striactceonina , n. sect, of Actaionina , type j* Orthostoma avena, Terq. ; 
Cossmann (92) p. 59. 
Sulcoactceon , n. g., for f Actceon striatosulcata , Zitt. & Goub. ; Cossmann 
( 92) p. 108. 
fS. ovoideus, Urgonian beds, Oregon ; Cossmann (92) p. 154, figg. : n. sp. 
f Tornatellcea lapparenti , Urgonian beds at Vassy; Cossmann (92) p. 147, 
figg. : n. sp. 
Tornutina singaporensis , p. 194, capitata, p. 195, Singapore ; Pilsbry in 
Tryon (448) xv, fig. : n. spp. 
j- T. ( Retusa ) bertliclini, Albion beds at Le Gati (Aube) ; Cossmann (92) 
p. 151, figg. : n. sp. 
f Trocliactceon arnaudi, Lower Provencian beds, Charente, p. 148, boutil- 
lieri , Urgonian beds, Oregon, p. 149 ; Cossmann (92) figg. : n. spp. 
Tuhiferidm, n. fam. for \Ceritella, Morr. & Lyc. [= Tubifer , Piette]; 
Cossmann (92) p. 77, who places it between Actaionidin and Torna- 
tinidm. 
Volvatellino } , n. subfam. of Alceridce ; Pilsbry in Tryon (448) xv, p. 350. 
Volvocylindrites, n. sect, of Cylindrites, type f Volmila marcousana , Guir. 
& Oger. ; Cossmann (92) p. 71. 
Volvula, A. Ad., is, Pilsbry considers, sufficiently distinct from Volvulus 
of Oken and of Brull6 to stand ; Tryon (448). 
APLYSIOIDEA. 
Aplysia, on the status of the name, which must yield to Telhys ; Pilsbry, 
Ann. Nat. Hist, xvi, p. 424 : Aplysia , notes on a group of, which 
seem to form a connecting link between the Cephalaspulea and 
Anaspidea ; Gilchrist, op. cit. xv, pp. 403-405, 1 pi. 
A. mouhoti, Siam; Gilchrist, t. c. p. 404, figg. : n. sp. 
Aplysiince , n. subfam. of Aplysiidce ; Pilsbry in Tryon (448) xvi, p. 65. 
Dolabella californica , Stearns, note oil the animal ; Pilsbry, Nautilus, ix, 
pp. 73 & 74. 
Telhys [i.e. Aplysia ] floridensis , Florida, p. 82, panamensis , Panama, p. 88, 
Pilsbry iu Tryon (448) xvi, figg. : n. spp. 
PLEUROBRAN CH OWE A. 
Pleurobranchus digueti, Gulf of California; Rochebrune, Bull. Mus. 
Paris, i, p. 240 : n. sp. 
1895. [vol. xxxm.] D I I 
