54 



Dr. E. von Martens on the Occurrence of 



Green- \ Scandi- 

 land and| navia. 

 Iceland.! 



Central 

 Europe. 



IV. 



Southern 

 Europe. 



V. 

 Torrid 



Crustacea^ 



PoDOrHTHALMA ... 



Tetkadecapoda.. 

 Gnathostoma ... 



CORMOSTOMA.. 



Mollusca. 



(Brachyiira in general. 

 Thelphusinea 

 Astacidea 

 Caiidea 



Idoteidea 



Oniscidea 



Cymothoidea 



Gammaridea 



Cyclopoidea 



Daphnoidea 



Cyproidea 



Artemioidea 



Apodoidea 



Liinnadioidea 



f Caligoidea 



\Lernaeoidea 



Gasteropoda 

 ctexobranchia, 



Gasteropoda 



pulmonata 



Melaniacea}^ . 

 Paluduiacea^^ . 



Neritacea 



Litnnaacea 



Ampidlariacea. 



Mytilacea 



Arcacea 



I Najadea 



Conchifbr.\ ■{ Cycladea 



Tellinea 



Soleuacea 



Pholadea 



r: 



(S.Am.JO) 



t 

 t 



t 

 N. Ani.f 



t 

 t 



Remarks. 



1 . Tropical species of Gasierosteusov Cot tics are unknown to me. 



2. Schmarda (Geogr. Verbreitung der Thiere^ p. 59) speaks of 

 Sea jMullets in the pond near Arcacli ; this is unknown to me. 

 In a lake near Arqua (not far from Padua), sea fishes are to be 

 found according to a popular tradition. Species of Mugil are 

 often kept in Italy in brackish water ponds, and in France they 

 ascend the rivers in abundance (see Valenciennes), but I do not 

 know how far they go into pure fresh water. In tropical 

 countries, Mugil liga, Nestis, and Dajaus occur in fresh water. 



3. Campylodon in the Greenland Sea ; Mastacemblus in Indian 

 rivers and even near Aleppo (Russell). 



4. See p. 51. 



5. Platessa flesus, according to Nilsson, ascends in Sweden as 

 far as the peat moors of Jaeravallen, and probably in the Rhine 

 as far as Bonn, as Dr. Giinther has had the kindness to inform 

 me from the statements of fishermen. The nearly allied Passara 

 {PL passer, Bp.) ascends the Po even into the small rivers Tar- 



