50 



LOPHOBRANCHII. 



leaf-like appendage of the under piece of the mouth does not 

 project so far. 



This fish seems to be more rare on the coasts of Britain than 

 on those of Norway and Sweden. 



3. Siphonostomus Rondeletii, Bonap. 



Syngnathus Rondeletii, Delaroche, Ann. du Mus. 1809, t. \iii. 



p. 324. pi. 21. f. 5. 

 Syngnathus viridis, Risso, Hist. Nat. p. 179 (1826); Ichth. de 

 ^ Nice, p. 65 (1810). 



Syngnathus rhynchaenus, Michah. Isis, 1829, p. 1014. 

 Siphonostomus Rondeletii, Bonap. t. 5. f. 41. 



Diagn. — Length of the snout exceeding one and a half times 

 the distance between the front of the orbit and the extre- 

 mity of the gill-cover. Hind-head and space between the 

 eyes flat. Pretty deep lines divide the forehead from the 

 orbits. 



Descr.— The seven edges of the body are not toothed. Eight 

 or nine rings sustain a dorsal fin, which is extended by 37 rays ; 

 and there are 18 or 19 body-rings, and from 33 to 35 caudal 

 ones. According to Risso the back is bright green ; the sides 

 and belly are yellowish-green, gilded by a golden lustre, and 

 ornamented by silvery spots and some dark lines. A variety 

 exhibits a brownish-green hue with blackish cross-bars. Those 

 which I have seen have irregular transverse lines on the snout, 

 a longitudinal line near the eye, and another line running ob- 

 liquely from the point of the snout to the middle of the eye. 

 Some have clear round spots on the gill-cover, others have irre- 

 gular markings on the breast and belly, while others again are 

 ornamented by a fine network, and exhibit a golden or silvery 

 lustre on the gill-cover; and some few display on a greenish 

 ground-colour white spots arranged in roundish figures. 



4. Siphonostomus argentatus. 



Syngnathus argentatus, Pallas, according to Nordmann, in De- 

 midoff's Voyage. 



Diagn. — Head and edges of the body toothed. 



Descr. — Snout more than one and a half times the length of 

 the space between the fore corner of the eye and the extremity 

 of the gill-cover. The hind-head almost 'flat, and the interval 



