464 U.S. NATIONAL MUSEUM BULLETIN 288 



COSTA RICA: Pazo Azul de Pirris, MCZ 7997-8001. 



PANAMA: Gatun, Canal Zone, USNM 54177; Progreso, Chiriqui, USNM 



118673; Parita, Herrera, USNM 127261; Cerro Campana, USNM 139701; 



Mojara, USNM 129841-4. 



Leptodactylus poecilochilus diptychus Boulenger 



Plate 63d-f 



1918. Leptodactylus diptychus Boulenger, p. 431 (type locality, Andes of Vene- 

 zuela).— A. Lutz, 1927, pp. 39, 45, pi. 10, figs. 12, 13.— Shreve, 1947a, 

 p. 535. — Gines, 1959, p. 114. — Stebbins and Hendrickson, 1959, p. 529. 



1961. Leptodactylus poecilochilus dypticus. — Rivero, 1961, p. 42; 1963a, p. 93; 

 1964b, p. 311. 



1963. Leptodactylus dypticus. — Gorham, p. 19. 



Description. — USNM 146437 an adult from Villa Arteaga, An- 

 tioquia, Colombia. Vomerine teeth in two heavy, transverse, arc- 

 shaped, nearly contiguous series behind the choanae; tongue three- 

 fourths as wide as mouth opening, cordiform, its posterior border 

 free and distinctly notched; snout acute, but rounded at the tip when 

 viewed from above, rounded in profile, the upper jaw extending con- 

 siderably beyond the lower. Nostrils dorsolateral, distinctly project- 

 ing, their distance from end of snout two-thirds then* distance from 

 eye. Can thus rostralis indistinct; loreal region concave, sloping out- 

 ward to the upper lip. Eye large, prominent, its diameter three-fifths 

 its distance from tip of snout; interorbital diameter a little wider than 

 that of upper eyelid, equal to interval between nostrils. Tympanum 

 large, its greatest diameter three-fourths that of eye, separated from 

 eye by an interval equal to one-half its own diameter. Fingers long, 

 scarcely webbed but with prominent lateral ridges, first finger much 

 longer than second or fourth and reaching almost to base of ultimate 

 phalanx of third; a heavy oval thumb pad present; a distinct cordi- 

 form palmar callus; metacarpal tubercles well developed. Toes with 

 small webs, third toe much longer than fifth, its tip reaching to center 

 of antepenultimate phalanx of fourth; a narrow but heavy inner 

 metatarsal tubercle and a very small round outer one; a heavy tarsal 

 ridge, ending just before heel; a distinct skinfold on heel and knee. 

 Body rather slender in postaxillary region, narrower than greatest 

 width of head. When hind leg is adpressed, heel reaches a point be- 

 tween eye and nostril; when limbs are laid along the sides, knee and 

 elbow overlap; when hind legs are bent at right angles to body, heels 

 overlap. Skin of upper parts pustular and shagreened, with a heavy 

 dorsolateral fold from behind eye to groin, and a shorter fold from 

 above arm insertion to groin; venter smooth on chin, chest, and belly; 

 coarse granules on lower femur; a thick glandular ridge from posterior 

 corner of eye above tympanum, ending behind it; another shorter 

 ridge from corner of mouth to shoulder; a distinct skinfold across 



