496 
ACTIXOPTERYGIT. 
trunk and contained somewhat more than four times in the total 
length of the fish; caudal pedicle less than half as deep as the 
abdominal region. Teeth closely arranged in the maxilla and 
smaller than some of those in the dentary. Vertebrae at least 60 
in number, nearly all those of the abdominal region conspicuously 
deeper than long. Pelvic fins arising much nearer to the anal than 
to the pectorals ; dorsal fin with 20-22 rays, arising at the middle 
point between the occiput and the base of the caudal fin; anal fin 
with about 14 rays, nearly as deep as the dorsal and arising opposite 
the hinder portion of the latter. 
Form. Sf Loc. Lower Kimmeridgian (Lithographic Stone): Bavaria. 
49142. Plaster cast of type specimen : Neukelheim. 
Purchased, 1878. 
37795. Pine specimen 0*55 in length, with imperfect head showing 
part of the maxillary and mandibular dentition ; Solen- 
hofen. Hdberlein Coll. 
37795 a. Scattered remains of the head with vertebral column, 
caudal fin, and other fragments of a somewhat larger fish; 
Solenhofen. The hyomandibular, maxilla, mandible, and 
some of the broad branchiostegal rays are displayed. 
Hdberlein Coll. 
Oeonoscopus muensteri (Wagner). 
1842. Aethalion sulovatus, G. von Munster, Neues Jahrb. p. 42. [Fish; 
Palaeontological Museum, Munich.] 
1842. Pachycormus elongatus, G. von Munster, ibid. p. 43. [Ditto.] 
1842. Pachycormus latus, G. von Munster (non Agassiz), ibid. p. 43. 
[Ditto.] 
1842. Pachycormus yibbosus, G. von Munster, ibid. p. 43. [Ditto.] 
1848. Pachycormus muensteri, C. G. Giebel, Fauna d. Vorwelt, Fische, 
p. 199 (substitution of name for P. latus, Munster). 
1863. Macrorhipis munsteri, A. Wagner, Abh. k. bay. Akad. Wiss., 
math.-phys. Cl. vol. ix. p. 724, pi. vii. 
Type. Nearly complete fish ; Palaeontological Museum, Munich. 
A form of fish not yet clearly distinguished from 0. cyprinoides, 
much smaller than the typical specimens of the latter, and pos¬ 
sibly its immature stage. The trunk may perhaps be somewhat 
stouter than in the last species and the lobes of the caudal fin 
broader. 
This is described as the type species of Macrorhipis. 
Form. Sf Loc. Lower Kimmeridgian (Lithographic Stone): Bavaria. 
