of the 6-'e/i«s CoryJoras. 213 



6. Corydoras garhei. 



R. von Iheriug, Rev. Mii9. Paulist. viii. 1910, p. 383 (1911). 



Depth of body 2| in the leno-th, leiig-th of Iiead 3. Snout 

 2 in lengtii of head, iiiteroi-bit;il width a little moi-e than 2, 

 diameter of eye 3|-. Barbels reaching gill-opening, Dorsal 

 spine shorter than that of pectoral ; base of dorsal longer 

 than distance from adipose fin, which is preceded by 1 or 2 

 median scutes. A series of 5 spots along the side and 4 

 along the back; dorsal blackish anteriorly ; caudal with 4 

 cross-bars. 



Length 50 mm. 



K,io San Francisco, 



7. Corijdoras agas.'it'zii. 



? Corydoras umbiacus, Cope, Proc. Acad. Philad. 1871, p. 280. 

 Corydoras ayassizii, Steind. Sitzungsb. Akad. Wien, Ixxiv. 1877, p. 138, 



pi. xii. fig. 2. 

 ? Cortfdoras jmnctatus, Eigenm. & Eigenm. Occ. Pap. Calif. Acad. i. 



1890, p. 472. 



Depth of body 2i to 2^ in the length, length of head 3|-. 

 Snout nearly \ length of head; diameter of eye 4 in length 

 of head, interorbitai width 2. Suborbital narrow, separated 

 by a broad naked space from upper lip ; barbels reaching 

 gill-opening ; operculum twice as deep as broad. Dorsal I 7 ; 

 spine I length of head ; soft rays decreasing from first, which 

 is longer than spine ; edge of fin slightly concave ; base equal 

 to distance from adipose fin, which is preceded by 3 median 

 scutes. Anal I G-7. Pectoral spine extending beyond base 

 of pelvics. Scutes 23/21 ; humeral shields not in contact 

 below, each separated by one scute from base of pelvic fin. 

 Sides with small brown spots; a yellowish lateral band 

 bearing 3 longitudinal series of spots ; dorsal blackish ante- 

 riorly and with series of spots on the rays ; caudal barred with 

 series of spots; anal spotted ; pelvics sjnd anal immaculate, 



Amazon. 



Total length 60 mm, 



1. 25 rum, R. Jurua. Bach, 



This specimen is too small for description, but shows the 

 characteristic deep snout and narrow operculum. 



8. Corydoras mxdlimaculalus. 

 Steind. Anz. Akad. Wien, 1907, p. 291. 



Depth of body 2| to more than 2^ in the length, length of 

 Ann. tt' Mag. N. Hist, Ser. 8. Vol. x. 15 



