Evermann and Kniddll — Fish from Centnd Enindoi 



101 



distant from llu' front of anal but apparently representing the 7th ray 

 w liicli is always pre.senl in the females and absent from the (in proper in 

 the males. These females contain ovaries with lather large but still im- 

 mature ova. 



There are several yning individuals in our eollection. The smallest of 

 these is a trifle more than 1 inch in total length and lias the dorsal fold 

 conspicuous and thin and the posterior dorsal spine not concealed but 

 com]Kiratively long and spinuliferous. The color now is plain light 

 brown. 



Tahi.k of Proportional Measurk.mknts of Specimens of 

 Ci/dopiiun cydopuin. 



* a. slightly longer ; b. slightly shorter ; c. same length. 



The fin formulas are as follows : D. 7 (9 in No. 4) ; A. 6 in d^, 7 in 9 ; 

 P. 10 ; V. 5 ; C. 13 (11 in No. 8 and 12 in No. 9). 



Size and Distribution. 



In th(> Riverside Natural Hist(^ry, page 114, it is stated that — 



The five oi' six known species of Argidte reach a length of 2 or 3 inches 

 only, and inhabit the ponds and springs of the upper Andes on the Peru- 

 vian or Pacific slope, where they take the place occupied by the Lorica- 

 riidse on the Atlantic side. 



Ill this statement there are two errors. First, regarding the 

 size; the tj'pe of Arges snbato was alxmt 21 cm. or ahout 8.25 

 inches long, and Steindachner mentions examples 11 to 32 em. 

 long (ahout 4.4 to nearly 13 inches); and Astrohleptis grixalvii, 



