HISTORY OF THE ICHTHYOLOGY OF NEW BRUNSWICK. 47 



in more recent times, and under the results of drainage 

 and from other causes, either become extinct, or main- 

 tained its existence in small and isolated areas, becoming 

 in time a form peculiar to its own surroundings. Dark 

 Lake, with a name suggestive of its shaded waters, and the 

 little woodland pond at Anagance, hidden away in the 

 sombre forest, would be expected, other things being 

 equal, to affect an ancestral type in the same way ; while 

 the marshy pond in Maugerville, with extensive grassy 

 intervales on all sides, and Garnett's lake, with its peaty 

 bottom and surrounding heath, must influence alike the 

 varj'ing and less persistent features of a common parent. 



Chrosoimis erythrog aster Agassiz. Red-Bellied Dace. 



The paucity of cyprinid forms in the province has 

 been remarked on, but a closer study of the fauna keeps 

 adding an occasional new species. The latest found b}' the 

 writer is the above, which occurs in Clear Lake, Lepreaux, 

 and may reasonably be expected to turn up in other 

 places. Doubtless its diminutive size has caused it to 

 be mistaken for the fry of larger species ; yet in the 

 breeding season it is a conspicuous and attractive object. 



The bod}' is fusiform ; head rather bluntly pointed, 

 with mouth oblique and lower jaw slightly the longer. 

 The maxillary scarcely reaches the orbit. Lateral line 

 very short, as m Phoxinus. Colour: back pale brown 

 or olivaceous, with a dark vertebral line, and sometimes 

 on large specimens an ill-defined line on each side of it 

 made up of spots, and extending from occiput to dorsal 

 fin, but generally only a few spots are seen. Sides with 

 two dark bands, the upper narrow extending from the 

 head to the tail, frequently broken posteriorly into sjDots 

 or disappearing altogether ; the lower broader, running 

 from the nose through the eye and ending in a dark 

 spot on the tail. Space between the bands and the latter 



