SAUROCEPHALUS AND ITS ALLIES. 95 
3. PRoTOSPHYRAENA FEROX, LEIpy. 
Saurocephalus lanciformis Harlan, Agassiz: Pois. Fos. v. 102, pl. 25 ec. figs. 21—29; 
Dixon: Geol. Sussex, 374, pl. xxx. fig. 21, xxxi. 12, xxxiv. 11; Pictet: Traité d. Paleont. pl. 
Xxxil. figs. 7; Giebel: Odontog. pl. xlii. fig. 7; Reuss: Verst. Bohm. Kreidef. 13, pl. iv. fig. 67? 
Tooth of an unknown fish, and tooth of a species of Squalus, Mantell: Geol. Sussex, 227, 
RSs. Jk; SOS, WS, es 
Saurocephalus Harlan, Gervais: Pal. France. pl. 70, figs. 5—7? 
4, PROTOSPHYRAENA STRIATA, LEIDY. 
Saurocephalus striatus Agassiz: Pois. Fos. v. 102, pl. 25. figs. 17—20; Dixon: Geol. 
Sussex, 375, pl. xxxv. figs. 5. 
5. CIMOLICHTHYS LEVESIENSIS, Lripy. 
Saurodon Leanus Hays, Agassiz: Pois. Fos. v. 102, pl. 25c. figs. 30, 31; Dixon: Geol. 
Sussex, 373, pl. xxx. figs. 28, 29, xxxi.* fig. 10; Pictet: Tr. d. Pal. pl. xxxii. fig. 6. 
(2) Saurocephalus striatus Agassiz. 
6. XrputAs Drxont, Lerpy. 
Saurocephalus lanciformis Harlan, Dixon: Geol. Sussex, note to p. 379, pl. xxxu.* figs. 1. 
Plate VI. fig. 8. Greater portion of the left superior maxilla of Saurocephalus lanci- 
Jormis Harlan, natural size. 
Fig. 9. One of the teeth, magnified three diameters. 
. 10. Section of the crown at base, magnified three diameters. 
. 11. Section of the fang, magnified. 
. 12. Left maxillary (a,) and pre-maxillary (b,) of Sawrocephalus Te Harlan, 
natural size. 
Fig. 15. Internal view of the same specimen. 
Fig. 14. Left ramus of the lower jaw of S. Leanus. 
Fig. 15. Upper tooth, magnified four diameters. 
