ngth, 14.3-17.0
(15.4), 14.9-16.8 (15.8); head width, 11.0-13.6 (12.0), 12.2-13.2
(12.6); head length, 12.8-15.1 (13.3), 12.8-14.6 (13.7).

~Leptodactylus melanonotus~ (Hallowell)

_Cystignathus melanonotus_ Hallowell, Proc. Acad. Nat. Sci.
Philadelphia, 12:485, 1861.--Nicaragua. Type locality
restricted to Recero, Nicaragua, by Smith and Taylor
(1950a:320).

_Leptodactylus melanonotus_, Brocchi, Mission Scientifique
au Mexique et dans l'Amerique Centrale, pt. 3, sec. 2, livr.
1:20, 1881.

Apatzingan (103); Capirio; Charapendo (7); Coahuayana;
Cofradia (10); El Sabino (21); La Playa (3); Lombardia (5);
Maruata; Nueva Italia (7); Ostula (9); Playa Azul (11); Rio
Marquez, 10 km. S of Lombardia; Rio Marquez, 13 km. SE of
Nueva Italia (6); Rio Tepalcatepec, 27 km. S of Apatzingan.

This species is widespread in the lowlands of the state; it has been
collected up to elevations of 1050 meters in the Tepalcatepec Valley. In
the dry season individuals were discovered beneath rocks along streams
and in damp arroyos; in the rainy season they were found wherever there
was water. Males were heard calling from flooded fields, ditches, rocky
streams, and small puddles. The call is a series of individual notes:
"woink, woink, woink."

Adult males are noticeably smaller than females; measurements for 20
males and ten females from Apatzingan are, respectively: snout-vent
length, 29.6-34.6 (32.3), 36.3-44.1 (40.8); tibia length, 12.6-15.1
(14.0), 16.5-19.0 (17.8); head width, 10.8-11.9 (11.3), 12.6-14.8
(13.7); head length, 11.2-13.2 (11.9), 13.1-14.8 (14.0). Brownish yellow
ventral glands are present in some juveniles and in some adults
collected in the dry season as well as in the rainy season.

~Leptodactylus occidentalis~ Taylor

_Leptodactylus occidentalis_ Taylor, Trans. Kansas Acad.
Sci., 39:349, 1937.--Tepic, Nayarit, Mexico.

Five km. W of Tangamandapio.

On the night of June 11, 1958, this species was calling from a
hyacinth-choked ditch. Although numerous individuals were heard, only
one specimen was obtained. The frogs were calling from the tangled mat
of hyacinths along with _Hyla eximia_, _Hypopachus oxyrrhinus ovis_, and
_Rana pipiens_.

Taylor (1936a:352) characterized this species as follows: "The narrow
head, small maximum size (38 mm. for females, 33 mm. for males), the
character of the postaxillary and postfemoral glands, t