Fras. 
D. 
PHATE XXXII. 
Protosphyrena minor (Agassiz); greater part of rostrum, upper view, 
with (1 a) terminal portion in lower view, and (1 /) a cross-section, 
nat. size-—Zone of Holaster subglobosus ; Burham, Kent. B. M. 
no. 3233 
Ditto; external ornament of rostrum, upper and (2) lower surfaces, 
three times nat. size.—Ibid. Mrs. Smith’s Collection (B. M. no. 
49100). 
Protosphyrena stebbingi, sp. nov.; portions of rostrum, the larger part 
in upper view, with (3 a) the terminal part in lower view, and 
(3 b,3.c) two cross-sections, one half nat. size; also (8 d) portion of 
groove and ornament on upper surface, twice nat. size. The 
type specimen.—Same zone; Betchworth, Surrey. Collection of 
W. P. D. Stebbing, Esq., F.G.S. 
Lophiostomus divom, Kgerton; remains of head and anterior portion of 
trunk, partly from above and the left side, partly (4a) in right side 
view, partly (4b) from below, and rostrum (4c) in front view, nat. 
size; with portions of ornament of preoperculum (4d) and gular 
plate (4 ¢), three times nat. size; also (4 /) inner view of scale, 
three halves nat. size. The type specimen.—Chalk ; Alfriston, 
Sussex. B. M. no. 23023. ao., antorbital; br., branchiostegal rays ; 
ch., ceratohyal; d., dentary; jr., frontal; gu., gular plate; mv., 
maxilla; na., nasal; op., operculum; p.', p.*, prominences; pel., 
postelavicular plate; pet., base of pectoral fin; plv., base of pelvic 
fin; pir., premaxilla; pop., preoperculum ; sop., suboperculum. 
Ditto; scale, outer view, showing overlapped portion, three halves 
nat. size.—Ibid. Egerton Collection (B. M. no. P. 1116). 
Paar. 
153. 
i 
(ie 
(Sw) 
153. 
