98 M. Fries on the Genus Syngnathus. 



latter the common name Hafsnalar, They may be charac- 

 terized in the following manner : 



I. Marsupial Pipe-fish (Tangsnallor). Syngnathi marsu- 

 piales, pinnis pectoralibus instructs 



Corpore distincte angulato, pinnis caudce, ani, pcctoralibusque radiatis ; 

 cauda natatoria. Mares in folliculo, marsupii instar, rima longitudinali 

 dehiscente, sub cauda proxima infra anum inserto, ultraque medium 

 caudse extenso, ova fovent pullosque exclusos includunt. 



II. Ophidial Pipe-fish (Hafsnalar). Syngnathi ophidii, 

 pinnis pectoralibus carentes. 



Corpore tereti, angulis saltern minus conspicuis, pinnis pectoralibus aniquc 

 nullis ; cauda prehensili, longa, gracillima, pinna aut nulla aut rudi- 

 mentaria. Mares in superficie inferiore abdominis ova in cellulis apcrtis 

 affixa trahunt. 



I. Marsupial Pipe-fish*. 



To this subdivision belong the two species S. Acus and 8. 

 Typhle, which names Linnaeus had adopted in our Fauna. The 

 author, after reviewing the various works treating on this sub- 

 ject, states, " Never having been so fortunate as to find more 

 than one species of Tangsnallor I had almost come to the con- 

 clusion of excluding Typhle, in the impression that our Scan- 

 dinavian species was the true Acus, but when I received Yar- 

 rell's beautiful work on the British Fish I immediately saw my 

 error." The author then gives the diagnostic and synonyms 

 of S. Acus, which we here omit, as they may be found in the 

 works of Jenyns and Yarrell, and concludes with the remark, 

 " that with the exception of Pennant and Montagu all the 

 English Faunists appear to agree with respect to S. Acus, and 

 to them must be ascribed the having first given the true dia- 

 gnosis between this and the following species (S. Typhle.)" 



Rare on the Swedish coasts, but common on the English, 

 where it is said to attain only the length of 16 to 18 English 

 inches. 



We have then the diagnosis and synonyms of S. Typhle, 

 with the following remark : " This is the most common species 

 which occurs on the Swedish coasts both in the Baltic and also 

 in the Cattegat. Its general length at these places is between 

 9 and 10 Swedish inches. In both seas two coloured varieties 



* As what is stated respecting this first division will be found in general 

 in the works of Mr. Jenyns and Yarrell, we have only given an extract of it. 



