MEXICAN TAILLESS AMPHIBIANS 99 



orbital band; darker spots on back sometimes confluent and 

 form a pair of longitudinal bands; a sharply defined vertebral 

 white stripe extending from muzzle to vent may or may not be 

 present; limbs with narrow crossbars, which on hind limb occa- 

 sionally encroach upon concealed hinder surface; throat brown- 

 ish or speckled with brown; remainder of underparts whitish or 

 yellowish; a blackish streak along canthus rostralis sometimes 

 extends over whole side of head and may be continued backward 

 on side of body; lower and upper lips with dark spots or bars 

 that generally have light edges; head-and-body length, 36 to 

 40 mm. mexicanus (p. 108) 



ELEUTHERODACTYLUS ALFREDI (Boulenger) 



1898. Hylodes alfredi Boulenger, Proc. Zool. Soc. London, p. 480, pi. 39, fig. 1, 



June 7. 

 1882. Hylodes conspicillatus Brocchi, Mission scientifique au Mexique et dans 



I'Am^rique Centrale, recherches zoologiques, pt. 3, sect. 2, p. 59 (Andes, 



Orizaba). [Nee Hylodes conspicillatus Gunther, 1858.] 



Type locality. — Atoyac, State of Vera Cruz, Mexico. 



Range. — So far as known, found only at Orizaba and at Atoyac in 

 Vera Cruz. 



Remarks. — The leptodactylid from the Andes of Orizaba, which 

 Brocchi identified as Hylodes conspicillatus Giinther, is certainly not 

 that species. Brocchi states that the adhesive disks are very distinct, 

 and since the external characters and general coloration are described 

 rather briefly, the relationships of this frog are estabUshed mainly by 

 the process of elimination. Distinctive characters of constant value 

 are hard to find in this genus, but the species alfredi fortunately has 

 especially large subtriangular and rather squarely truncated adhesive 

 disks on the two outer fingers. 



This frog was named in honor of the donor. Prof. Alfred Dug^s, of 

 Guanajuato, Mexico, and there are two co types in the collection of the 

 British Museum of Natural History. The following notes were made 

 on these specimens: 



B.M. No. 98. 2. 19. 1 : Head-and-body length, 37.2 mm.; transverse 

 diameter of tympanum, 2.8 mm. ; transverse diameter of eye, 4.2 mm. ; 

 anterior edge of eye to nostril, 4.8 mm.; the hind Hmb being carried 

 forward along the body, the tibio-tarsal joint reaches considerably 

 beyond the tip of snout; apical disks of fingers very large; vomerine 

 teeth in two small oblique posteriorly converging rows behind and 

 within level of the choanae; skiu of abdomen smooth; large subarticu- 

 lar tubercles; soles of feet with supernumerary tubercles ; large elongate 

 inner and small conical outer metatarsal tubercles; tarsal fold indis- 

 tinct, if present; apical disks of toes considerably smaller than those 

 of fingers. 



B.M. No. 98. 4. 7. 1: Head-and-body length, 30.8 mm.; transverse 

 diameter of tympanum, 2 mm.; transverse diameter of eye, 3.6 mm.; 

 anterior edge of eye to nostril, 4.1 mm.; the hind limb being carried 



