ACTINOPTERYGII. 
431 
teeth on its outer margin ; the dentary has an irregular 
series of large conical teeth in its hinder two-thirds, very 
small closely-set teeth in front. Purchased , 1890. 
P. 6175 a. Laterally compressed rostrum and presymphysial hone, 
probably associated ; Weymouth. Purchased, 1890. 
41180, 41229, 41401, 42368, 43566, 44190. Twelve fragments of 
cranium, variously crushed ; Weymouth. 
Purchased, 1868-73. 
43564. Complete presymphysial bone 0-04 in length, and four times 
as long as its maximum depth ; Weymouth. 
Purchased , 1872. 
41229 a, 41401 a, 41879, 42365, 43027, 43565, 44189, P. 6175 b. 
About twenty specimens of the presymphysial bone, more 
or less imperfect and of various sizes; Weymouth. 
Purchased , 1868, 1869, to 1890. 
Belonostomus crassirostris, Costa. 
1853. Belonostomus crassirostris, O. G. Costa, Atti Accad. Pontan. 
vol. vii. p. 29, pi. ii. figs. 1, 2. 
1853. Belonostomus gracilis, O. G. Costa, ibid. p. 31, pi. ii. fig. 3. 
[Portion of rostrum; Geological Museum, University of Naples.] 
Type. Pish wanting pelvic fins; Geological Museum, University 
of Naples. 
A species attaining a length of 0’6, with relatively small head 
occupying about one-sixth of the total length. Scales smooth, and 
those of the lateral line much exceeding in depth the series below. 
Form, df Loc. Cretaceous : Pietraroja, Province of Benevento, 
Italy. 
Not represented in the Collection. 
Belonostomus lesinaensis, Bassani. 
(P) 1867. Hemirhynchus heckeli, R. Kner, Sitzungsb. k. Akad. Wiss., 
math.-naturw. Cl. vol. lvi. pt. i. p. 182. [Head; Museum of 
Imperial Geological Survey, Vienna.] 
(?) 1867. Hemirhynchus comenianus, R. Kner, ibid. p. 182. [Head; 
Museum of Imperial Geological Survey, Vienna.] 
1879. Belonostomus crassirostris, F. Bassani ( errore ), Verhandl. k.-k. 
geol. Reiclisanst. p. 166. 
1882. Belonostomus lesinaensis, F. Bassani, Denksclir. k. Akad. Wiss., 
math.-naturw. Cl. vol. xlv. p. 198, pi. i. fig. 10. 
Type. Nearly complete fish; Museum of Imperial Geological 
Survey, Vienna, 
