608 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



8. MUSTELUS Cuvier. 



1)()U SHARKS. 



3/y/.v/c/».v OiTvtioK, Regne Animal, 1st. ed,, 1817, ji. 128 {mustelus). 

 Ph'uracroinylnn Gill, Proc. Ac. Nat. Sci. Phila., 1864, p. 148 (LTvis). 

 Cra/cus Jordan and Evermann, Fish. N. Mid. Am., I, 1896, p. 29 (aftiT Rafinesquei 

 1810) . 1 



liody clonjrate, slender; .snout comparatively lonj^ uikI flattened;' 

 mouth crcsceiit-shajxHl, with well-developed labial folds; teeth small, 

 many rowed, Hat and smooth, rhombic, arranged lik(> pavement, alikci 

 in both jaws, and blunter than in any other sharks; eyes lai'ge, oblong;; 

 spiracles small, just ])ehin(l the eyes; pectoral fins laroe; first dorsal- 

 lartj;e, not much behind pectorals; second dorsal somewliat smaller;' 

 anal opposite second dorsal and still smaller; ventrals Avell developed: 

 basal lobe of caudal almost ol)solete, the tail nearly straight; embryo' 

 attached to the uterus ))y a placenta, or else without placenta, those so; 

 attaclied belonging to the subgenus Pleuracromylon. Small shark8,v| 

 among the smallest of the American species. I 



{iiiustehis^ a weasel or marten; the same word used for shark, as is' 

 the synonymous word galeus.) 



8. MUSTELUS MANAZO Bleeker. 



MANAZO; HOSHIZAME (STAR-SPOTTED SHARK); HOSHINOKURI (STAI'I 



CHESTNUT). 



Mustelus vulgaris Schleijel, Fauna Japonica, Poiss., 1850, p. 803, pi. cxxxiv 

 Nagasaki (not of Miiller and Henle). — Nystrom, Kong, Svensk, Ak. Vet.) 

 1887, p. 50; Nagasaki. ; 



Mustelus innmizo Bleeker, Verh. Bat. Gen., XXVI, 1854, Japan, p. 126; Nagai' 

 saki.— GtJNTHER, Cat. Fish, VIII, 1870, p. 387; Japan. — Dumeril, Elasmoil 

 branches, I, 1870, p. 403 (after Eleeker).— Ishikawa, Prel. Cat., 1897, p. 62, 

 Hokkaido, Boshu, Tokyo. — Jordan and Snyder, Proc. U. S. Nat. Mu8.|i 

 1900, p. 336; Tokyo, Hakodate. j 



Head 6^ in length; depth Hi; width of head 1^ in its length; deptl 

 of head 2; snout 2^; width of mouth 3; interorbital space 2i; ey< 

 4r|; space between spiracles If; pectoral about li; height of dorsa; 

 If; caudal peduncle li in e3'e. 



Body long, slender, back elevated in front; tail long, tapering 

 Head broad, broader than greatest depth of body, depressed in front 

 elevated behind; snout greatly produced, depressed, flattened, rathe 

 broadly rounded; eyes elongate, lateral, in middle of length of head 

 mouth obtusely angular, breadth much greater than either of rami 

 and tip of mandible not before eye; teeth small, pavement-like, ii 

 man}' rows; lips thin, at corners of mouth a fold on each side; nostril, 

 very large; on lower surface of head, nearer eye and mouth than ti] 

 of snout; interorbital space broad, flattened. Spiracles small, ver 

 near posterior margin of eye. Gill-openings rather small, posteriori; 

 above base of pectoi-al in front. 



