ASPIDORHYNCHIDiE. 
429 
(?) 1842. Belonostomus angustus, G. von Minister, Neues Jahrb. p. 45 
(imperfectly defined). [Fish, wanting jaws; Palaeontological 
Museum, Munich.] 
1844. Belonostomus sphyrcenoides , L. Agassiz, Poiss. Foss. yoI. ii. pt. ii. 
pp. 140, 297, pi. xlvii. a. fig. 5. 
1844. Belonostomus brachysomus, L. Agassiz, ibid. pt. ii. pp. 143, 297. 
1863. Belonostomus sphyrcenoides, A. Wagner, Abb. k. bay. Akad. 
Wiss., matb.-pbys. Cl. yoI. ix. p. 690. 
Type. Nearly complete fish; Palaeontological Museum, Munich, 
and Woodwardian Museum, Cambridge. 
The type species, attaining a length of about 0*3. Head with 
opercular apparatus occupying about one-third of the total length ; 
maximum depth of trunk contained twelve times in the total length. 
Cranium about five times as long as its maximum depth ; jaws 
equal in length. VertebrEe in the form of robust constricted rings, 
scarcely longer than deep. Space between the origin of the pelvic 
fins and that of the anal fin less than the space between the latter 
and the caudal. Scales smooth or very feebly tuberculated ; those 
of the lateral line not much exceeding in depth the series below. 
Form. Log. Lower Ximmeridgian : Bavaria. 
49129. Plaster cast of type specimen; Lithographic Stone, Eich- 
stadt. Purchased , 1878. 
37800. Large imperfectly preserved fish about 0*285 in length, 
contorted, of the variety named B. brachysomus by 
Agassiz; Solenhofen. Hdberlein Coll. 
P. 3800. Trunk nearly complete from the pelvic fin backwards, but 
disturbed in front, probably of this species; Kelheim. 
Enniskillen Coll. 
P. 7576. Extremity of tail with caudal fin, probably of this species ; 
Kelheim. Eaerton Coll. 
i/ 
Belonostomus muensteri, Agassiz. 
1834. Aspidorhynchus miinsteri, L. Agassiz, Verhandl. Ges. vaterland. 
Mus. Bohmen, p. 70 (name only). 
1837. Belanostomus miinsteri , L. Agassiz, Bericht. Versamml. deutsch. 
Naturf., Jena, 1836, p. 127 (name only). 
1844. Belonostomus miinsteri, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 
pp. 141, 297, pi. xlvii. a. fig. 2. 
1848. Belonostomus muensteri, C. G. Giebel, Fauna der Yorwelt, 
Fisclie, p. 155. 
1861. Belonostomus miinsteri, T. C. Winkler, Descript. Poiss. Foss. 
Solenhofen (Xatuurk. Verhandl. Holland. Maatsch. [2] vol. xiv.}, 
p. 34, fig. 5. 
