186 FISH GALLERY. 



male, who watches over them until they hatch. The young 

 then cling to his body by their suckers and remain thus 

 attached until sufficiently grown to take care of themselves. The 

 Sea-snails are diminutive fishes, two species of which are common 

 on the coasts of Cornwall and Devon, Liparis vulgaris, 836, and 

 Liparis montagui, 837. A deep-sea form of Sea- snail, Paraliparis 

 fimbriatus, 973, is shown in the series of Deep-sea Fishes in 

 Cabinet-case 44. 



In the families Platycephalidse and Hoplichthyidse the head is 

 depressed, with spines, and with two nostrils on each side. The 

 pelvic fins are widely separated and are set behind the pectorals in 

 the former family and a little in advance of them in the latter. 

 The fishes occur off the coasts in the. Indian and Western Pacific 

 Oceans (see 838-839). 



The Agonidse have the head completely cuirassed ; the body is 

 covered with bony plates. The pelvic fins are set close together 

 and none of the fin-rays of the pectoral fin are modified as " feelers " 

 as they are in the next family, the Triglidse or Gurnards. The 



Fig. 88. — Flying- Gurnard, Dactylopterus volitans. 

 (From Giintlier, "Study of Fishes.") 



fishes are small; the only British form is the Pogge, Agonus 

 cataphractus, 840. 

 Gurnards. In the Triglid fishes or Gurnards the head is completely 

 cuirassed and provided with spines. Two or three of the lower- 



