Specimen (1): ♂, 40415, testis 5 × 3 mm., 364 gm. (August 15), 4 km. NNE Felipe Carillo Puerto. Mallophaga: Craspedorrhy sp.
Buteogallus anthracinus (Lichtenstein): Common Black Hawk.—Five individuals were seen on August 23 along a stretch of five miles of highway about 30 mi. SW Champotón, Campeche. The species was identified from the description given in Blake (1953). The hawks were perched on dead limbs in full view, 50 to 100 feet from the highway, which at this locality parallels the beach, sometimes only a few yards from the water.
Ortalis vetula intermedia Peters: Chachalaca.—Chachalacas were heard or seen at all localities on the mainland except Sisal.
Specimens (3): ♀, 40416, 423 gm. (July 13), ♀, 40417, 432 gm. (July 15), and ♀, 40418, ovary 12 × 9 mm., 408.5 gm. (July 16), 7½ km. W Escárcega. Mallophaga: Amyrisidea spicula, July 16.
Colinus nigrogularis persiccus Van Tyne and Trautman: Black-throated Quail.—These quail were abundant in the arid scrub west of Sisal. Several coveys of half-grown chicks were seen and specimens taken were in full breeding condition. On a two-mile walk on August 18, in the coastal scrub about 5 km. W Sisal, a pair of quail was seen about every 100 paces.
Specimens (4): ♀, 40422, ovum in oviduct 30 x 22 mm., 147.5 gm. (August 10), ♀, 40420, ovum in oviduct 27 mm., 151.7 gm. (August 18), ♂, 40421, testis 9 × 5 mm., 119.6 gm. (August 18), and ♂, 40419, testis 11 × 6 mm., 145.7 gm. (August 18), all from southwest of Sisal.
Laterallus ruber (Sclater and Salvin): Little Red Rail.—Two specimens were taken about 3½ km. N San Miguel, Isla Cozumel, in tall grass. One bird was shot when flushed; the other was caught in a Museum Special mousetrap. I follow Brodkorb (1943) and Paynter (1955a) who did not recognize subspecies in this species.
Specimens (2): ♀, 40424, ovary 9 × 3 mm., 41.5 gm. (August 8), and ♂, 40423, testis 6 mm., 40.0 gm. (August 11), Isla Cozumel.
Porphyrula nartinica (Linnaeus): Purple Gallinule.—A female was taken in the tall grass where red rails were found on Isla Cozumel.
Specimen (1): ♀, 4025, ovary 14 x 7 mm., 169 gm. (August 10), 3½ km. N San Miguel.