AULOEniNCHIDJJ. 
371 
Family AULORHYNCIIID.E. 
Trunk elongated, and snout much produced into a tube. Pre- 
maxilla excluding maxilla from upper margin of mouth, which is 
small and terminal ; teeth minute or absent. Gills pectinated ; 
opercular apparatus complete. Anterior vertebrae somewhat elon- 
gated, and all those of the abdominal region with large transverse 
processes. Pelvic fins with anterior spine and 4 to 6 divided rays ; 
free spines in front of the dorsal fin, of which the soft portion 
18 directly opposed to the anal; anal fin with one anterior spine; 
caudal fin distinct. Skin with degenerate squamation or rows of 
small bony plates. 
Synopsis of Genera. 
Pelvic fins about midway between pectorals and 
anal ; regularly arranged small plates in 
skin Protaulopsis ( p. 371). 
Pelvic fins far forwards ; few longitudinal series 
of bony plates Aulorhynchus (p. 372). 
Genus PROTAULOPSIS, novum. 
Vertebrae between 50 and 60 in total number, about half being 
m the caudal region. Pelvic fins not far forwards, with one spine 
und about 6 divided rays ; anal fin-spine relatively small ; caudal 
6n of moderate size, forked. At least one longitudinal series of 
enlarged bony scales, probably on the dorsal margin, and the skin 
completely covered with very small, regularly arranged plates. 
Protaulopsis bolcensis, sp. nov. 
Type. Imperfect fish ; British Museum. 
The type species, attaining a length of about 0'i5. Length of 
head with opercular apparatus equalling that of trunk from pectoral 
arch to base of caudal fin. Pelvic fins nearly as large as the 
pectorals, and arising slightly nearer to the latter than to the anal ; 
anal fin with very small spine and 10 stout divided rajs, arising 
11 ] id way between the pelvic pair and the caudal fin. Enlarged 
lateral dermal scutes apparently smooth and about as long as a 
■vertebral centrum. 
Sorm. Loc. Upper Eocene: Monte Bolca, near \erona. 
3o 877. Type specimen, in counterpart, about 0 '25 in length. The 
head and abdominal region are exposed from below, the 
caudal region in side-view ; and the specimen is damaged 
2b 2 
