326 
DEVONIAN FAUNA. 
Perhaps B. 8otverhyi, d'Orbigny, comes closer to some of the Devonshire 
specimens than any other shell. D'Orbigny' s figure seems just similar to one 
specimen in the Museum of Practical Geology, having a narrow prominent barred 
keel, oblique sides, large umbilicus, and grouped strias. 
B. umbilicatus, Potier and Michaud,^ is, as re-established by de Koninck,^ very 
similar in ornament, but has a much sharper and narrower keel and apparently a 
more open umbilicus. 
2. Belleeophon Hicksii, n. sp. PI. XXXI, figs. 7, 7 a, 7 h, 8, 8 a. 
Description. — Shell rather large, globose, nautiloid, horizontally symmetrical. 
Spire and umbilicus deeply and equally concave, rather broadly open, showing 
the margins of the interior whorls. Sutures deep, acute. Whorls rising from the 
suture in an inward curve, and then rounding rapidly over the sides to the back, 
which is broad and flatly convex. Sinus-band median, narrow, elevated, slightly 
flattened on the back, and very slightly marked by fine, irregular striae or growth- 
lines. Ornament consisting of numerous, irregularly undulating and zigzagging, 
elevated, sub-nodulous, rounded ridges, somewhat anastomosing and often inter- 
rupted and branching, about half the height of the keel, curving gently backwards 
from it, divaricating towards it, and consequently becoming much less numerous 
on the sides of the whorl. Mouth apparently much expanded. Shell-structure 
moderately thick. 
Size. — A specimen in the Torquay Museum measures 17 mm. in height, and 
17 in the diameter. A rather defective cast in Mr. Vicary's Collection measures 
about 27 mm. in height, and 31 in width. 
Localities. — From Wolborough there is a fine specimen in the Woodwardian 
Museum which was presented by Mr. George M. Hicks ; two large casts and two 
poor specimens retaining the test in Mr. Vicary's Collection ; and another large 
cast in the Battersby Collection of the Torquay Museum. In the last Museum are 
two specimens with the shell which probably came from Lummaton or Barton. 
Bernarhs. — These shells seem to be distinguished from B. lineatus, Goldfuss, by 
their greater comparative height, their narrower and more rounded keel, and their 
closer and more rounded and irregular venous-like ribs and strise. Mr. Hicks's 
specimen is very fine, though probably part of the body-whorl is missing. It appears 
to show that the distinctive character of the strijje is maintained throughout, although 
they become coarser and more irregular near the mouth. The inner whorls of the 
1 1838, Potier and Michaud, ' Galer. Moll. Mus. Douai,' vol. i, p. 5, pi. i, figs. 13—15. 
2 1883, de Koninck, ' Aun. Mus. Eoy. H. N. Belg.,' vol. viii, pt. 4, p. 143, pi. xxxvi, figs. 4—6. 
