108 GENERA AND SPECIES. 



Lepadogaster. Plate xiii. GOBIESOCIDsE. 



99. gouanii, CORNISH SUCKER. Vertical fins continuous. 



100. decandollii, SUCKER. Vertical fins not continuous ; no black spot 



under tip of pectoral. 



101. Umaculatus , DOUBLY-SPOTTED SUCKER. Vertical fins not 



continuous ; black eye-spot under tip of pectoral. 



The Cornish Sucker has from 16 to 20 rays in its dorsal fin ; 9 to 

 1 1 in its anal ; 19 in its caudal ; 20 to 25 in its pectorals ; and a 

 spine and 4 rays in its ventrals. The dorsal begins beyond the 

 middle of the back, and, like the anal, which begins nearer the tail, 

 is continuous with the caudal. The pectorals are connected by a 

 membrane with the ventrals. The spine of the ventrals is imbedded 

 in skin ; between them is the sucking disk, with a deep groove in 

 the middle. The skin is loose and tough, the snout spatulate, the 

 upper jaw the longer. The mouth extends to the middle of the eye, 

 and the eyes, like those of the other suckers and those of the 

 blennies, can be moved independently of each other. In colour 

 this species is red as a rule, though sometimes brown or green, and 

 there are two dark spots on the nape which have a light edging. 

 In length it rarely exceeds 4 inches, and it is generally found under 

 stones between the tide marks. 



The Sucker has from 14 to 16 rays in its dorsal; 8 to n in its 

 anal ; 18 in its caudal ; 25 in its pectorals ; and a spine and 4 rays in 

 its ventrals. The dorsal begins in the hinder half of the back, and, 

 ike the anal, is distinctly separate from the caudal, although in each 

 case a membrane extends from the hinder edge. The pectorals are 

 connected with the ventrals. The snout is spatulate and the upper 

 jaw the longer, the mouth extending to almost the middle of the 

 eye. The body tapers very slightly ; the head is the widest part, 

 and is flat at the top. The sucker is of the same character as that 

 of the last species. In colour this species is red with light spots. 

 In length it is i\ inches, and it is generally found clinging to stones 

 between the tide marks. 



The Doubly-spotted Sucker has only from 5 to 7 rays in its 

 dorsal fin; in its anal are from 4 to 6; in its caudal 12; in its 

 pectorals 17 ; and in its ventrals 5. The dorsal and anal are small, 

 and though in the hinder part of the body, are some distance from 

 the tail. The pectorals are not joined to the ventrals, as in the other 

 two species, though the sucking disk is of the same character. The 

 colour is orange, with reddish bands. The characteristic ocellus 

 is just covered by the tip of the pectorals. In length this species is 

 2 inches or more. It is found near low-water mark in rather deeper 

 water than the other two. Like them, it has no scales on its body. 



Lcpidopus. Plate iii. TRICHIURID&. 



23. caudatus, SCABBARD FISH. Body long, thin, and tapering ; tail 



small and forked. 



In the dorsal there are from 100 to 105 rays, in the anal 18 to 25 

 rays, in the caudal 16 to 18, in the pectorals 12. The ventrals are 

 represented by the pair of scales from which the fish takes its name 



