Callisaurus

torquatus during bipedality and other lizards such as Basiliscus, Anolis, Varanus, Uranoscodon, Dipsosaurus and Callisaurus (see Barbour, 1943; Snyder, 1967; Howland et al., 1990; Irschick and Jayne, 1999; Hsieh, 2003) it is clear that each one of these lizards uses different strategies during their bipedal running.

lutzae is, in general, more similar to the one observed in the lizards described by Irschick and Jayne (1999), particularly, Dipsosaurus dorsalis and Callisaurus draconoides.

Effects of Incline on Speed, Acceleration, Body Posture and Hind Limb Kinematics in Two Species of Lizard, Callisaurus Draconoides and Uma Scoparia.

Atractis penneri is widespread and has been reported in lizards of the genera Callisaurus, Crotaphytus, Gambelia, Holbrookia, Phrynosoma, Sceloporus, Uma and Uta occurring from the western United States, northern Mexico and Baja California (Baker 1987).

Thubunaea iguanae is primarily known from California wehre it has been reported from Callisaurus, Cnemidophorus, Crotaphytus, Sceloporus, Uma, Uta and Xantusia (Baker 1987).

Nematode Lizard host Locality Prevalence Atractis penneri Callisaurus Isla Angel de la Guarda 5/12, 42% draconoides Bahia San Francisquito 2/2, 100% not given 13/34, 38% Gambelia not given 1/1, 100% wislizenii Petrosaurus sp.

The zebra-tailed lizard (Callisaurus draconoides) is a diurnal insectivore typically ocurring in fairly open areas in deserts throughout western North America (Pianka and Parker, 1972; Tanner and Krogh, 1975; Smith et al., 1987).

The pursuit deterrent function of tail-wagging in the zebra-tailed lizard (Callisaurus draconoides).

-- The behavior of ten Callisaurus draconoides in a 20 [m.sup.2] enclosure of natural microhabitat in Baja California Sur, Mexico, were monitored five days prior to and during a total solar eclipse on 11 July 1991.

The zebra-tailed lizard, Callisaurus draconoides, is a medium-sized (55-75 millimeters snout-vent length) inhabitant of North American deserts (Asplund, 1967; Vitt and Ohmart, 1977; Stebbins, 1985).