The food items from stomachs included: 38 spiders (8 of the salticid genus _Phidippus_, 5 lycosids, 4 thomisids, and the remainder unspecified); 15 insect larvae (7 of them lepidopteran and one tentatively identified as an ant, _Camponotus castaneus_, the rest unspecified); 13 unspecified insects; 10 crickets; 9 roaches; 9 snails (5 of them _Gastrocopta armifera_); 7 beetles; 4 sloughs of skinks; 3 grasshoppers; 2 grouse locusts; and one each of cave cricket (_Ceuthophilus?_), ant (_Camponotus castaneus_), moth, centipede, sow bug, and egg of a skink. The egg was probably laid by the female that ate it, since she was found brooding an unusually small clutch of only three eggs. The condition of food items found in stomachs varied greatly. Some were nearly intact, while others were fragmentary and represented by only a few of the more durable and indigestible parts. The larvae of various insects found in stomachs examined are especially noteworthy, since but little comparable material was found in the much larger group of items identified from scats. The scatological material was even less satisfactory than the stomach material in providing determinable food items. The scats of these skinks are, roughly, 10 to 20 mm. long and two to four mm. in diameter, usually cylindrical and almost straight, and capped at one end with a white chalky deposit of uric acid. Superficially they have some resemblance to bird droppings, but are different in texture. The uric acid deposit is loose and crumbly, and much less compact than that with bird feces, and the food residue is much less completely disintegrated than is similar material in feces of birds. Common small snakes which might produce feces of similar size, include the ring-necked snake (_Diadophis punctatus_), the worm snake (_Carphophis amoenus_), and DeKay's snake (_Storeria dekayi_), but their feces have a much higher moisture content, lack the definite shape of the skink scats, and ordinarily do not contain readily recognizable residue of the prey. The six other species of lizards on the Reservation, the collared lizard (_Crotaphytus collaris_), brown skink (_Scincella laterale_), prairie skink (_Eumeces septentrionalis_), Sonoran skink (_E. obsoletus_), six-lined racerunner (_Cnemidophorus sexlineatus_) and glass "snake" (_Ophisaurus attenuatus_) might produce scats indistinguishable from those of the five-lined skink. However, none of these lizards except the relatively rare and secretive brown skink, occurred in either of the two situations where most of the scats were collected and it is highly improbable that the scat collection included any material from species other than the five-lined skink.