36 " MARINE AND FISHERIES 



5 GEORGE v., A. 1915 



Family poeciliid^. 



(Killifishes) 



Fundulus diaphanus menona, Jordan and Copeland. 



(Menona top-minnow) 



Frequently taken in somewhat weedy but rather open water near shore. 

 The largest number of specimens taken in the gap separating the two parts of the 

 Giant's Tomb Island, and in all probability the species favors sedimentary areas. 

 It is the only species representing the genus or family in the region, and is one of 

 the surface or top-minnows, interesting from their feeding habits and their value 

 as destroyers of mosquito larvae. The species is easily distinguished from other 

 small fishes by its flattened wedge-like head, the top of which bears a rosette of 

 scales, the flat tumid lips, and vertical bars of the sides. 



Length 2f inches. Body spindle-shaped, more or less compressed posteriorly. 

 Depth 4-4 to 5. Head 3-2 to 3-6. Eye 3-2 to 4. Dorsal fin with 12 or some- 

 times 13 rays. Anal with 11, sometimes 10 rays. Scales in a longitudinal row 

 44 or 45; in oblique row around the sides of the body from the front of the dorsal 

 fin, 12. Lateral line inconspicuous, represented by minute rounded depressions 

 on some of the scales. The body scales are continued over the opercle to the head, 

 the dorsal surface of the head being scaly, with a rosette of scales on the occiput. 

 Males have 15 to 20 vertical bars on the sides of the body, somewhat narrower 

 than the light interspaces. Females have 12 to 16 bars, thinner, less regular 

 and less complete, represented by rounded spots posteriorly. Dorsal surface 

 with black blotches, sometimes almost uniformly dark. Some males have a faint 

 horizontal mark on the dorsal fin, and one specimen taken in June has two fairly 

 definite bars separated by a light interspace. 



The characters of the Georgian Bay specimens agree for the most part with 

 those described for the most western variety menona as described by Forbes and 

 Richardson ('08), though intermediate in some respects between this and the 

 Atlantic coast form as described by Jordan and Evermann ('96). 



The food of this specieS' consists of aquatic and terrestrial insects, minute 

 Crustacea, and occasionally small molluscs. 



Family gasterosteid^. 



(Sticklebacks) 



Eucalia inconstans, Kirtland. 



(Five-spined or brook stickleback) 



This species, apparently the sole representative of the family in this region, 

 occurs in a few collections, all from comparatively closed swamps and inland 

 ponds. It appears to be rare everywhere along the shore. 



Length IJ inches. Body fusiform, laterally compressed, with very slender 



