M. Fries on the Genus Syngnathus. 103 



85. pi. 4. f. 1 ; Penn. Brit. Zool. vol. iii. pi. 23. f. 61 ; Flem. Brit. An. 

 p. 176. 



$ =S. sequoreus, Jenyns's Manual, p. 486 ; YarrelVs Brit. Fish, II. p. 335. 



$ =S. Ophidion, Jenyns's Man. p. 487; Yarr. Brit. Fish, II. p. 335. 



Stenaale, No. 2, Strom., Sbndm. beskrif. 



Of all the Scandinavian species of Syngnathus this is the 

 largest and most distinguished. It attains a length of 2 feet. 

 The general size of the females amounts to between 18 and 20 

 inches ; the males, which appear to be constantly smaller, are 

 generally met with between 13 to 16 inches in length. The 

 colour is a beautiful burnt or brownish yellow ; along the sides 

 run rather wavy whitish oblique stripes parallel to each other, 

 and which are inclosed by a brown frame. Between head and 

 anal aperture are 29 to 30 plates or rings, and between the aper- 

 ture and the caudal extremity about 70. The dorsal fin con- 

 sists of 40 to 44 rays, and extends over 12 rings and somewhat 

 over the 13th. The trunk of the female is pretty evidently 

 octangular ; then at each side proceed three ridges, a rather 

 sharp keel on the belly, and along the back is a smaller ridge, 

 which appears to pass over into a fold of the skin. The males 

 have a more bordered trunk ; the lateral ridges and the ven- 

 tral keel are more even and the back quite plain, without a 

 trace either of a ridge or a folding of the skin. In the female 

 the anal aperture is situate at about the middle of the body, 

 in the male much more anteriorly. The males have the eggs 

 fastened to the belly in several rows (in 8 to 10). 



This beautiful fish was formerly not admitted in the Swedish 

 Fauna; it occurs sparingly if not rarely on the Bohusland 

 coasts. 



** Pinna caudali omnino nulla {parte maj ore pinnae dorsalis pone latitu- 

 dinem ani sita.) 



To this section belong two distinct species, which have pre- 

 viously been confounded one with the other. 



Common Pipe-Fish, Syngnathus Ophidion, Linn. — Corpore teretiusculo 

 gracili, fere lineari ; longitudine rostri distantiam a centro oculi ad mar- 

 ginem operculi aequante ; ano circa medium corporis sito. 



Syn, S. Ophidion. Linn. Fn. Suec. No. 375 ; Syst.Nat. i. 417; Retz. Fn. 

 Suec. p. 312. No. 21 ; Ekstrom, Abh. d. Akad. d. Wiss. 1831. p. 280 ; 

 Nilssofi, Synops. p. 488. 



S. lumbriciformis. Jenyns's Man. p. 488. 



Artedi Descript. Spec. p. 1. No. 1. Synon. p. 2. No. 4. Gener. p. 1. No. 2. 



