GOBIESOCID^E. 189 



rather mixed tip one with another by the various British authors. There appear 

 to be only three specific forms, and these are subject to almost endless modifications 

 as to colour. They may be recognized as follows : 



A. Dorsal fi.n continuous with the caudal. 



a. Dorsal fin with more than ten rays, L. Gouanii. 



B. Dorsal fin not continued on to the caudal. 



a. Dorsal fin with more than ten rays (14-16), L. Decandolii. 



b. Dorsal fin with less than eight rays (5-7), L. bimaculatus. 



A. Dorsal and anal fins continuous tvith the caudal. 



1. Lepadogaster Gouanii, Plate LVII, fig. 1 . 



Small such-fish, Borlase, Cornwall, p. 269, pi. xxv, f. 28, 29. Le Barbier ou 

 Porte-Ecuelle, Gouan, Hist. Pise. t. i, f. 6, 7. Jura sucker, Pennant, Brit. Zool. 

 (Ed. 1812) iii, p. 137, pi. xxii (Ed. 1812) iii, p. 181, pi. xxv; Couch, Trans. Linn. 

 Soc. xiv, p. 87. 



Lepadogaster rostratus, Bl. Schn. p. 1 ; White, Catal. Fish. p. 108. 



Lepadogaster Gouanii, Lacep. i, pi. xxiii, f. 3, 4 and ii, p. 73 ; Risso, Ich. 

 Nice, p. 72 and Eur. Merid. iii, p. 271 ; Costa, Fauna Napol. Pesc. p. 2, 

 t. xxiii, f. 1-3 ; Cuv. Reg. Anim. Blus. Poiss. pi. cviii, f . 2 ; Kroyer, Dan. 

 Fisk. ii, p. 538 ; Giinther, Catal. iii, p. 510 ; Canestr. Arch. Zool. Anat. Maggio, 

 1864, iii, p. 183 ; Steind. Ich. Span. u. Port. 1868, p. 20 ; Giglioli, Pesc. Ital. p. 33 ; 

 Moreau, Poiss. France, iii, p. 356. 



Gyclopterus spatula, Lacep. ii, p. 68. 



Gyclopterus ocellatus, Donovan, Brit. Fish, iv, pi. lxxvi ; Turton, Brit. Fauna, 

 p. 116. 



Gyclopterus lepadogaster, Webb, Artedi, vii, p. 490 ; Bonnaterre, Enc. Ich. p. 29, 

 pi. lxxxvi, f. 356. 



Gyclopterus Gornubicus, Shaw, Zool. v, p. 397 ; Swainson, Fishes, ii, p. 338. 



Lepadogaster ciliatus, Risso, Journ. Phy. xci, p. 248. 



Lepadogaster balbis, Risso, Ich. Nice, p. 73, pi. iv, f. 9 and Eur. Merid. iii, 

 p. 274 ; Cuv. Regne Anim. ; Costa, 1. c. t. xxii. 



Lepadogaster biciliatus, Risso, Eur. Merid. iii, p. 272 ; Nord. in Demid. Voy. 

 Russ. Merid. iii, p. 537, pi. xv, f. 4-6. 



Lepadogaster Cornubiensis, Flem. Brit. Anim. p. 189 ; Yarrell, Brit. Fishes 

 (Ed. 1) ii, p. 264, c. fig. (Ed. 2) ii, p. 359 (Ed. 3) ii, p. 335 ; Jenyns, Brit. Vert. 

 p. 469; Thompson, Proc. Z. Soc. 1835, p. 81 and Nat. Hist. Ireland, iv, p. 212. 



Lepadogaster zebrinus, Lowe, Proc. Zool. Soc. vii, 1839, p. 88. 



Lepadogaster Webbianus, Val. in Webb and Berthel. lies Canar. Poiss. p. 85. 



Cornish sucker, Couch, Brit. Fishes, ii, p. 196, pi. cviii, f. 2. 



B. v-vi, D. 16-20, P. 20-25, V. 1/4, A. 9-11, C. 19. 



Length of head 2| to 2|, of caudal fin 6, height of body 5 to 6 in the total 

 length. Eye 7 to 8 diameters in the length of the head, 1| to 2 diameters 

 from the end of the snout, and H apart. Body anteriorly broad and depressed, 

 but compressed posterior to the termination of the disc. The width of the head 

 at the occiput equals twice its height : lower surface flat. Snout spatulate, and 

 has been aptly likened to the bill of a duck : upper jaw slightly the longer : the 

 maxilla reaches to beneath the middle of the orbit. Nostrils close together, 

 the posterior tubular, the anterior with a well-developed tentacle equalling 

 about one diameter of the orbit in length. Teeth in a patch of villiform ones 

 at the anterior portion of either jaw, while laterally they form a single row of 

 larger ones, which are conical and somewhat curved backwards. Fins the 

 dorsal commences about midway between the front edge of the eye and the 

 posterior extremity of the caudal fin, on to which latter both it and the anal 

 are continued. Caudal wedge shaped or rounded. Pectoral with a broad 

 base and having a membraneous connection with the inner ray of the ventral. 



