114' Dr. A. Giinther on new Species of Fishes 



attributing a general marine origin to the Coal-beds, in support 

 of which great stress has been laid upon the fact of the occur- 

 rence of minute spiral bodies found attached to some of the 

 plant-remains, and formerly referred to Spirorbis, a marine 

 genus of Annelida common upon our shores at the present 

 day, where it is generally attached to sea-weeds, and is well 

 known as Spirorbis nautiloides. These little spiral bodies of 

 the Coal-measure plants have, however, been described by Gop- 

 pert as a Fungus, under the name of Gyromyces Ammonis, and 

 are figured by Geinitz in his fine work on the Coal-plants of 

 Saxony*. We have here, therefore, an instance of the great 

 caution required in drawing general conclusions from insufficient 

 data, and would rather concur with the remarks ofibred on the 

 subject at page 54 of this Journal, believing that the Coal- 

 measures afford evidence of having been deposited under both 

 freshwater and marine conditions. 



EXPLANATION OF PLATE V. 



Fiff. 1 A-D. Belinurus Regince, n. sp. : A, B, natural size ; C, D, enlarged 



3 diameters. (The dotted lines represent the part restored.) 

 Fig. 2 A, C. Belinurus arcuatus, n. sp. : A, detached cephalic shield, natural 



size ; B, the same, enlarged 2 diameters j C, a small uncompressed 



specimen from a concretion. 

 Fig. 3 A, B. Belinurus rotundusl, Prestwich : A, natural size; B, enlarged 



3 diameters. (The dotted lines represent parts restored.) 



XVII. — On new Species of Fishes from Victoria, South Australia. 

 By Dr. Albert Giinther. 



A COLLECTION of fishcs from Victoria, sent to the International 

 Exhibition, and procured for the British Museum, was distin- 

 guished by the unusually large size of the specimens. They are 

 all stufi'ed, and unfortunately not accompanied by smaller exam- 

 ples preserved in spirits, so that we are obliged to leave the de- 

 scriptions of the new species incomplete in some points. We 

 hope, however, soon to make up for this deficiency, as we may 

 expect further supplies from that colony. 



Lates colonorum. 



B. 6. D. SItI^-. a. f. L. lat. 55. L. transv. 8/21. 



The specimen is 17 inches long, apparently a female, and 

 rather extended by stuffing; the length of the head, however, 

 appears to be a little less than one-third of the total (without 



* Die Versteinerungen der Steinkohlenformation in Sachsen, pi. 34. figs. 

 1-3. Dr. Geinitz first called my attention to this little fossil on a Calamitc- 

 8tem from a neighbouring colliery, in Mr. B. Edge's collection. 



