XO. 31 NEW GEXUS AXD SPECIES OF EEL REID 5 



Measurements of Paraxenomystax bidentatus 



Type Paratype 



(mm.) (mm.) 



Standard length 458 354 



Head to upper end of gill opening 67 56 



Predorsal 75 ^2 



Preanal 170 142 



Length of pectoral fin 10 o 



Length of caudal fin n jga 



Preoral length of snout 6.5 ^ 



Tip of snout to posterior nostril 20 17.5 



Length of snout 28 22 



Length of maxillary 3c) 32 



Diameter of eye (horizontal) 7.5 6.^ 



Diameter of e3^e (vertical) 6 4 



Width of body at vent 16 lO 



Depth of body at vent 17 13 



Greatest depth of head 15 13 



Greatest width of head 16 14 



Interorbital 48 4 



" Probably the caudal region has been damaged and regenerated. 



LITERATURE CITED 

 Alcock, a. 



1894. An account of a recent collection of bathybial fishes from the Bay 



of Bengal and from the Laccadive Sea. Journ. Asiatic Soc. Bengal, 

 vol. 63, pt. 2, p. 134. 



1895. Illus. Zool. Roy. Indian Survey Str. Investigator . . . . , pt. 3, 



Fishes, pi. 16, fig. 5. 

 Garman, Samuel 



1899. Reports on an exploration of the West Coast of Mexico, Central 



and South America, and off the Galapagos Islands. Mem. Mus. 



Comp. Zool., vol. 24, pp. 315-316, pi. N. 

 Gilbert, Charles Henry 



1892. Scientific results of the explorations by the U. S. Fish Commission 



steamer Albatross. Descriptions of apodal fishes from the tropical 



Pacific. Proc. U. S. Nat. AIus., vol. 14, No. 21, pp. 348-349. 

 Jordan, David Starr, and Evermann, Barton Warren 



1896. Fishes of North and Aliddle America. U. S. Nat. Mus., Bull. 47, 



pt. I, p. 361. 



