332 



PISCES. 



teeth 



— _ t 



but 

 6h rk 



b Is 



mouthed Dog-fisb. Lip;lit-brown, with ocellated spots. All the three are peculiarly destractive to the more 

 valuable fishes. Some foreign ones have a slight dilTerence of character. 



The Sharks properly so called include all species with a produced snout, no nasal grooves, and with 

 a caudal lobe i ore or 1 ^ t 1 d Tl e\ fcrm tl e gcrus 



far 1 rias, — a numerous and notorious trilje, 

 iti trenchant-pointed teeth, usually sei'rated in 

 t r a g;ins ; the first dorsal before theventrals; 

 tl p seco d nearly opposite the anals. They have no 

 p r ; the nostrils are in the middle of the 

 d tlie last ^ill-opening extends over the 

 C. vulgaris, the White Shark, is some- 

 t s t cnty feet lonj^^, uith isosceles-trian^uiar 

 raerged at the sides, and the lower ones 

 I jints placed on wider bases ; these teeth in 

 uth of such a fish forming' weapons di'eaded 

 ariners. Found in most seas. [iXs appcar- 

 the British shores has been mentioned, 

 ants authentication.] C. vu/pes, the Fox- 

 r Tlirrsher.— Ti-ian2;ular ti-eth in both 

 ] per lobe of the tail as Ions; as thr whole 

 ^ond dorsal and anal very small. C. glau- 

 cu tire Blue Shark, with curved-si iled teeth 

 al o\e 1 clinintT outwards, and straighter ones be- 

 1 all rag-g-ed on the edj^es. 

 Lamnn, tin. PorbLa^k, difttis f i om a true bhdrk m the pyramidal snout, and the g-ill openings before tlie pec- 

 torals. L. cornubica occasionally appears on the 

 British coast, and its size has caused it to be mis- 

 taken for the White Shark. L. monennu resembles 

 the last, but has the snout shorter. 



Ga/eus. — Shaped like the Sharks, hut with spira- 

 cles and an anal. G. vulgar/,);, the Tope, is found 

 on the British shores. 



Musfelus, resembles the former in shape, but 

 has the teeth like a close pavement. 



i^fi/avis, tlip Sniooib Hound, is a British species. 

 X'l/i'iaiiiis, wduts the first dorsal; has six gill- 

 openings, ti'iangular teeth above, and like a ^'^'- '■''^ —The Tiiresher. 

 saw below. Two species inhabit the Mediterranean. Has the form of tlie Sluirks, and spiracles, with tiie gill- 

 openings nearly snnoimding the neck ; its teeth are small and not notched. It is the largest of tlie True lishes, 

 being sometimes thiity. six feet long i but it is a hanrdcss fish. 6'. »(('.t//H/(,v, the Basking Shark, is fuuiid m the 

 Biitish s^as. 

 Cnilradn,), has spiral teeth like pavement, and a spine before each dorsal. 



S/iiiun , rusmibles Carcharias, but has spiracles ; no anal fin ; several rows of small trenchant teetli ; and a strung- 

 spine bcfoi'e t';ich dorsal. 8. acant/ieiis, the Piked Dog-fibh, is a British species. 



t'c;(//;//n, resembles the last; l.iut the second 

 doi>al over the ventrals, and the short tail, give 

 it a clumsy apiiearance ; its skin it^ very rough. 



>Sri/m/iiis, the Greenland Shark, is more abnn- 

 d;ini in tiji.- Arctic sens, and is large and vora- 

 ciuns ; but is understood not to attack Man, 



Zi/i/irna, foi-tns a s^corid genus. Like the 

 Sharks in the budy, but with the snout singu- 

 larly produced, forming two pieces like a double- 

 li aded hammer, with an eye in the niiildle of 

 each extremity. The species of the European 

 seas grow to the length of twelve feet, [and we 

 believe larger ones are met with in southern 

 latitudes]. 



Squal'nta, the Angel Fish, has spiracles and 

 wants the anni ; but it lias the mouth at the end 

 of the mnzy.le ; the eyes in the upper part of 

 the head ; the head round ; the budy broad and 

 flattened horizontally ; the pectorals large and 

 far forward, but separated fiom the back by a 

 slit in the gill-openings ; their two dorsals are 

 ttached loth to the upper and under sides of the terniination of the body. 



