On Prof. Owen's Monograph on Dimorphodon. 129 
M. Deshayes was unable to ascertain if the nucleolar whorls 
were arranged in the form of a little sinistral embryonic shell, 
as they are in all true Pyramidellids; and, unfortunately, 
neither is Mr. M‘Andrew’s shell in a condition to prove the 
fact, the apex of the spire being broken off. I am of opinion, 
however, that Scalenostoma belongs to Styliferide, and proba- 
bly should include Chemnitzia Rangii of Folin, Méléagrini- 
coles, pl. 6. f. 1. rU 
X.—Remarks on Prof. Owen's Monograph on Dimorphodon. 
By Harry G. SEELEY, F.G.S., Assistant to Prof. Sedgwick 
in the Woodwardian Museum of the University of Cam- 
bridge. 
only defects, often unaccountable, in contributions to know- 
ledge which are made in strivings to attain to truth. But all 
First, of Osteology.—This is descriptive of specimens of 
Dim Avg foin fs Lias, and interpretative of the osteo- 
ut, I think, both misunderstood and misrepresented ; so that 
it has seemed to me desirable to reproduce as well as I was 
able in English the following account which Von Meyer 
9 
Ann. & Mag. N. Hist, Ser.4. Vol. vi. 
