134 REPORT OF NEW JERSEY STATE MUSEUM. 



with red, belly rosy tinted and snout coarsely tuberculate. Young 

 with lateral dusky band black and base of caudal with black 

 spot. I have examples from Trenton. 



Semotilus atromaculatus Abbott, Proc. Acad. Nat. Sci., Phila., 

 1861, p. 156. 



Semotilus corporalis Cope, Trans. Amer. Philos. Soc, Phila., 

 XIII, 1869, p. 363, PI. 10, fig. 2.— Abbott, Geol. N. J., 1868 

 (1869), p. 824.— Abbott, Am. Nat., IV, 1870, pp. 100, no.— 

 Abbott, 1. c, VIII, 1874, p. 327.— Jordan, An. N. Y. Acad. Sci., 

 I, 1879, p. 107. — Abbott, Nat. Rambles, 1885, p. 478. 



Genus Leuciscus Cuvier. 

 The Dace. / 



Key to the species. 



a. Lateral line complete ; body oblong, deep and compressed. vandoisulus 

 aa. Lateral line incomplete, pores usually ceasing behind middle of body; 

 body stout, thick, little compressed, and back somewhat elevated. 



MARGARITA 



Leuciscus vandoisulus Valenciennes. 

 Rosy Dace. Pike Shiner. 



Related to the chub and roach, it differs in the same respects 

 from the other Leuciscince in the presence of at least 5 teeth 

 in the larger pharyngeal series. From the chub it differs in 

 the absence of a maxillary barbel at all ages, and from the 

 roach in having the postventral region rounded, that fish hav- 

 ing it compressed to a sharp keel over which the scales do not 

 pass. It has a wide mouth and small scales, and the males are 

 brilliantly colored with red pigment during the breeding-season. 



I have not seen examples from the Delaware among the multi- 

 tudes of cyprinoids which I have examined from its A^arious 

 affluents. The examples Dr. Abbott records were stated by that 

 gentleman to have been sent to Cope and by the latter to have 

 been determined as Clinostomus funduloides. They were taken 

 in the main channel of the river at Trenton. 



