36 



FISHES FROM BRAZIL 



TABLE SHOWING DIFFERENCES BETWEEN FARLOWELLA HARGREAVESI, 

 F. GLADIUS AND F. GRACILIS. 



For F. gladiiis the measurements are taken both from the original 

 description and from a description published by Regan (Trans. Zool. Soc. 

 Lond. XVII, 1904, p. 303). 



hargreavesi 



gladius 



gracilis 



Length of head in length of body 



Width of head in length of head 



Eye in head 



Eye in interorbital 



Interorbital in head 



Distance from supraoccipital to first dorsal 

 ray in length of body 



Postorbital part of head in snout from 

 naked oral area 



Number of lateral scutes 



Length of 2nd and 3rd dorsal scutes in their 

 width 



Pectoral ending in relation to front of ven- 

 tral 



Length of dorsal ray 



Length of first anal ray 



A black lateral band 



-23 

 -'4 



3 

 14 



3 

 5i 



6\ 



2| 

 35 



past 



1| 



11 



present 



31© 

 4 



18 ® 

 31 

 5" 



23 



33 



3 ® 



not to 

 2 



21 

 absent 



3| 



4 



12i 



3 ® 

 51 



6i 



3|® 

 33 



25® 



just to ® 

 21® 

 21® 

 absent 



©According to Boulenger. According to Regan and the picture it is 3|. 



©According to Regan. According to the picture it is 16^. 



®According to Regan. The picture shows it to be 2 J. 



©According to the picture. These characters not described by Regan, who 

 states "other characters similar to the preceding species [F. gladius]." 



®According to picture. Boulenger describes them "as more than twice as long 

 as broad." 



110. Loricaria cataphracta Linnaeus, 



Three specimens from Para. 



Ill, Plecostomus emarginatus (Cuvier and Valenciennes). 



A few specimens were collected by Dr. Baker and Mr. Mann in the 

 Madeira River about 400 miles from its mouth. 



112. Plecostomus pusarum Starks, new species. 



Plate 6. 



In the following description only specimens between 6 and 8 inches 

 in length are considered, though smaller ones were taken. 



The head to the temporal plate is contained 3 times in the length. 

 The temporal and occipital ridges are only very slightly indicated, not 

 nearly so well developed as in Plecosto>?ius plecostomus. The width of the 



