F. R. Coivper Reed — New Fossils from Haverfordwest. 365 



justified in giving a new specific name to this Haverfordwest fossil, 

 as its characters are well marked, though individual specimens 

 showing all of them are rare. 



There can be no doubt that Koken's and Ulrich's groups Sinuites 

 and Frotowarlhia are completely synonymous. The earlier classi- 

 fication and group typified by B. hilohatiis, which Koken proposed 

 in 1889,^ were abandoned by him in 1896 and rejected by Ulrich in 

 1897. Koken's subsequent definition of Sinuites is much shorter 

 than that given by Ulrich for ProtowartMa, and he is doubtful about 

 the distinction of the species which he mentions. The diagnosis is 

 as follows : — " Miindung mit breiter Bucht, die kein Schlitzband 

 hinterlasst. Nabelgegend mit nach vorn abgegrenzter Eunzel- 

 schicht, Aussenseite der Windungen innerhalb der Miindung 

 mit derben Runzeln. Nabel verdeckt. JBelleropJion bilobatus, Sow." 

 Ulrich defines Protoioarthia as follows : — " Aperture large, but not 

 abruptly expanded, the outer lip bilobate, with a broad and more or 

 less deep sinus, but neither a slit nor band ; dorsum convex, never 

 carinate ; umbilicus closed ; surface markings very fine, generally 

 consisting of more or less obscure crowded lines of growth and 

 delicate revolving striee. The inner lip forms a thin granulose 

 deposit over the dorsum of the inner end of the last whorl, and 

 extends on each side around the umbilical region. This portion is 

 covered with interrupted or inosculating lines. Type, JBellerophon 

 cancellatus, Hall." The ornamentation of B. cancellatus^ is indis- 

 tinguishable from that of our form, but Ulrich denies that this 

 species is identical with B. bilobatus, Sow., and considers that his 

 Frotowarlhia obesa ^ should rather be compared with it. 



Bellkrophon (?) MULTiEUGATUS, sp. nov, (PI. XX, Figs. 11, 11a.) 

 Fragments of a large BelleropJion-like shell occur in the Redhill 

 Beds of Prendergast Place and Mill Lane with peculiar characters 

 ■which mark it off from all the other species. The shell seems to be 

 involute, with the outer whorl embracing the inner ones and the 

 umbilicus absent or minute ; the back is broad with a low but 

 distinct carina, but apparently no slit-band; the outer whorl 

 enlarges rapidly towards the mouth, which is transversely expanded 

 and has a reflexed inner lip. The margin of the mouth is not 

 preserved, so that the sinus, if present, cannot be seen. The shell 

 is specially remarkable for its ornamentation, which consists of 

 regularly-arranged, strong, subequal, rounded to subangular, broad, 

 transverse ribs, separated by shallow grooves of the same width. 

 These ribs curve backwards towards the keel, over which they pass 

 without interruption, the opposite ones uniting in a broad V 

 enclosing an angle of about 150°. The ribs die out on the 

 expanded margins of the mouth, and are weaker on the lower sides 

 of the whorls. Fine, spiral, revolving, equidistant strias cross the 



1 Koken: Neues Jahrb. f. Mineral., Beil., Bd. vi (1889), p. 377. 



2 HaU: Pala;ont. N.Y., vol. i (1847), p. 307. Ulrich: op. cit., p. 872, 

 pi. Ixiii, figs. 1-14. 



3 Ulrich: op. cit., p. 874, pi. Ixiii, figs. 45-47. 



