Hlie Mud Minnows With 



Notes on the Order Haplomi i 



i 



DR. R. W. SHUFELDT, C. M. Z. S. 



Upper and lower figures of the same specimen of Umbra pygmaea bilineata; natural size, from life 

 Reproduction of photographs made by 1 the author. Note in the lower figure 

 now the fish rests upon its fins on the bottom 



We have in the North American fish 

 fauna a group of pike-like fishes, which 

 have been associated in an order, Hap- 

 lomi, by several of our most eminent 

 classifiers of this branch of the verte- 

 brata. This order has been created to 

 contain four very interesting families, 

 namely, the Umbridae, the Lucidae, the 

 Poccilidae, and the Amblyopsidae, and I 

 have paid some little attention to each 



and all of them. They vary enormously 

 with respect to the number of genera and 

 species each contains, as the Umbridae 

 or Mud Minnows, when Jordan and 

 Evermann published their work on the 

 Fishes of North America, in 1896, in 

 its only genus Umbra is represented by 



*Read at a regular meeting of the Aquarium 

 Society of Washington, on Thursday evening, 

 the 15th of March, 1917. 



