86 GENERA AND SPECIES. 



placed midway between the dorsals, and the pectorals are almost 

 long enough to reach the beginning of the dorsal with their pointed 

 tips. There is no fold at the angle of the mouth, the mouth is deep 

 and wide, and the teeth are in four or five rows. The body is long 

 and slender, dark greenish blue above, shading off into white below. 

 It reaches 25 feet in length, but the British specimens, mostly 

 caught in drift nets off Cornwall, average about 7 feet. 



Carelophus. Plate x. BLENNIIDJE. 

 80. ascanii, YARRELL'S BLENNY. Vertical fins even. 



Yarrell's Blenny has a long dorsal running from the nape to 

 the tail, and having from 50 to 52 rays ; the anal, which begins 

 a little behind the tip of the pectoral, has from 36 to 40 rays ; the 

 caudal has 17 ; the pectorals have 14 and the ventrals have a spine 

 and 3 rays. On the first three rays of the dorsal are filaments, 

 occasionally long. The mouth extends to the front edge of the eye ; 

 over the eyes is a large tentacle, and at the nostrils are two small 

 tentacles. The colour is reddish brown, with dark bands and 

 mottlings. The length is about 7^ inches. This fish, which is found 

 in crab-pots and lives in deeper water than the other Blennies, is 

 not of frequent occurrence. 



Centrina, Plate xxxi. SPINACID&. 



235. salviani, The spine in each dorsal curving forwards from the 

 middle of the base of the fin. 



Only one example of this shark has been caught in British 

 waters. There is only one spine in each dorsal, and it curves for- 

 ward, as stated, across the fin and projects beyond the front edge. 

 There is no anal fin. The length of the captured specimen is about 

 2ft., but the full size is between 4 and 5 feet. It is a Mediterranean 

 species. 



Centriscus. Plate xii. CENTRISCIDJE. 

 98. scolopax, TRUMPET FISH. Snout long and tubular. 



There are two dorsal fins, the first with from 5 to 7 spines, the 

 second with n or 12 rays ; in the anal there are 18 to 20 rays ; in 

 the caudal 16 ; in the pectorals there are 16 or 17, and in the 

 ventrals 5. The first dorsal spine is short, but the second is long 

 and thick, striated and serrated. The body is deep and thin, red 

 above and silvery below, and about 5 inches in length. Only a few 

 have been taken in British waters. 



Centrolabrus. Plate xiv. L ABRIDGE. 



112. exohtus, ROCK COOK. Five spines in the anal fin. 



The dorsal has from 18 to 20 spines and 6 rays; the anal has 

 5 spines and 7 or 8 rays ; the caudal has 15 rays ; in the pectorals 

 are 14 rays, and in the ventrals a spine and 5 rays. The dorsal 

 begins over the base of the pectorals, and its spines are all of the 



