102 PKOCEEDINGjS OF UNITED STATES NATIONAL MUSEUM. 



EXPLANATION OF PLATE V. 



Mklania sculptilis. 

 Fig. I. — Copy of Meek's original figure. 



Melaxia subsculptilis. 

 Fig. 2. — Copy of Meek's original figure. 



Melaxia taylori. 

 Fig. 3.— Copy of Gabb's original figure. 



LiTUASIA ANTIQUA. 



Fig. 4. — Copy of Gabb's original figure. 



Carinieex (Vorticifex) tryoxi. 

 Figa. 5, 6, and 7.— Different views of the type specimen. After Meek. 



Carixifex (Vorticifex) bixxeyi. 

 Figs. 8 and 9. — Different views of the type specimen. After Meek. 



AXCYLUS UXDULATUS. 



Fig. 10. — DorsaT view of type specimen. After Meek. 

 Fig. 11. — Lateral outline of the same. 



SpH.ERIUM? IDAHOEXSE. 



Figs. 12 and 13. — Copies of Meek's original figures. 



Sph.erium rugosum. ^ 



Figs. 14, 15, and It). — Copies of Meek's original figures. 

 Latia dallii (sp. nov.). 

 Fig. 17.— Dorsal view of the largest known example. 

 Fig. 18. — Lateral view of the same. 

 Fig. 19. — Dorsal view of another example. 

 Fig. 20 — Dorsal view of another example which has been cut away so as to reveal the 



transverse semilunar septum. 

 ' All the figures on this plate are of natural size except Figs. 14, 15, and 16, which 

 are a little enlarged. 



DESCRIPTIOIV OF FOUR NKW .SPECIE.^ OF MHARKS. FROLTI I^IAZAT- 

 r-AN, ITIEXII^O. 



By DAVID S. JORDAN ami CHARLES H. OILBERT. 



Carcharias fronto, sp. nov. (28lf)7.) 



Allied to Carcharias amblyrhynchus Bleeker, but with much larger 

 second dorsal. 



a. Description of No. 28167, a young (female) example, 30 inches in 

 leugth: 



Body comparatively short and stout. Head very Inoad, depressed, 

 broadly rounded anteriorly, the outline of the snout nearly parallel with 

 that of the l>road Y-shaped mouth. Leugth of snout from mouth equal 

 to half the distance between the angles of the mouth, or to the distance 

 from the line connecting these angles to the chin, about six-sevenths the 

 distance between the nostrils. Eye a little nearer nostril than angle of 



