S. Mustelus, Linn. Syst. Nat. torn. 1. p. 400. Turt. Brit. Faun. p. 112. Blainv. Faun. Franc, p. 81. pl. 20. f. 1. Mustelus lsevis, Will. Hist. Pisa. p. 60. tab. B. 5. f. 2. Flem. Brit. An. p. 166. Galeus Mustelus, Leach in Wern. Mem. vol. 11. p. 63. pl. 2. f. 3. Smooth Hound, Penn. Brit. Zool. vol. iii. p. 116. pl. 16. Smooth Shark, Id. (Edit. 1812). vol. in. p. 151. Tope Shark, 7c?. pl. 18. L'Emissole commune, Cuv. Reg. An. torn. 11. p. 390. note (1).

Length

From three to four feet; sometimes more.

Description

{Form). General form very similar to that of the S. Galeus; the snout, however, not quite so much produced: nostrils midway between the mouth and the end of the snout, partly covered by a small cutaneous membrane: teeth small and numerous, obtuse, forming a closely compacted pavement, disposed in a quincuncial order: eyes large, oval: behind each a temporal orifice of moderate size: branchial openings large, set nearer together as they are more behind; the middle three larger than the others; the last smallest, and placed above the base of the pectoral: skin less rough, when rubbed from tail to head, than in the S. Galeus; in the opposite direction perfectly smooth: all the fins in shape and situation exactly the same as in that species; only the second dorsal relatively somewhat larger, while the projecting lobe on the lower portion of the caudal is smaller. (Colours). Upper parts of a uniform pearl-gray; paler, or almost white, beneath.

* Proceed, of Berwicksh. Nat. Club. p. 7.

Tolerably common on most parts of the coast. According to Mr. Couch, *' keeps near the bottom, and feeds chiefly on crustaceous animals, which its blunt teeth are well calculated to crush".

(37). S. Hinnulus, Blainv

Faun. Franc, p. 83. pl. 20. f. 2. Mustelus stellatus, Riss. Hist. Nat. de l'Eur. Merid. torn. iii. p. 126. L'Emissole tachetee de blanc, ou Lentillat, Cuv. Reg. An. torn. ii. p. 390. note (1).

Length three feet. Form almost the same as that of the last species; only the lateral line more distinctly marked. Colour brownish ash, with a row of small whitish spots from the eye towards the first of the branchial openings; lateral line indistinctly spotted with white; also a moderate number of small scattered white spots between the lateral line and the dorsal ridge.

The above notes, made at Weymouth in Aug. 1832, relate to a species of shark, not unfrequently captured on that coast, which appears to be identical with the S. Hinnulus of Blainville. I have since seen a drawing of a similar fish in the possession of Mr. Yarrell, to whom it was sent by Mr. Couch of Cornwall. Not being aware at the time of the existence of a second species of Mustelus, and having had no opportunity of comparing a recent specimen with Blainville's description, I restrict myself to this notice of the circumstance, without positively asserting the S. Hinnulus to be British. It is, however, a great question, whether this last be any thing more than a variety of the S. Mustelus. As such it is considered by the Prince of Musignanoin his Fauna Italica.

(6. Selache, Cuiy).