Since 1961 the author has spent considerable time in the field in Clark County, Nevada. The following records derived from this field work extend our knowledge of certain species which are considered uncommon to rare in southern Nevada. I am grateful to Charles G. Hansen, biologist, Desert Game Range, for access to his personal records and to the Desert Game Range Narrative Reports (DGRNR). All specimens are on deposit in the Biology Museum, Nevada Southern University. Porphyrula martinica. Purple Gallinule. Two individuals of this species were observed at Tule Springs Park, 13 miles northwest of downtown Las Vegas, in 1966. Single birds were observed there on 7, 8, and 20 September and a male (B-668, weight 183.2 g, left testis 8 x 2 mm, no fat) was collected on 8 September 1966. This constitutes the first record for Nevada. Charadrius semipalmatus. Semipalmated Plover. Spring records of this species for Henderson Slough, one mile north of Henderson, on 26 April 1967 (5 birds) and Tule Springs on 12 and 15 May 1967 (1 bird) supplement those of Grater (Condor 41:221, 1939) and Hayward et al. (Brigham Young Univ. Sci. Bull., Biol. Series 3:8, 1963). Fall records for Henderson Slough on 16 August (2 birds), 23 August (1 bird), and 2 September 1966 (2 birds), and for 1.5 miles west of Logandale on 13 September 1966 (10 birds) appear to be the first for this season in southern Nevada. Specimens were taken on 16 August (B-626, female, ovary 5 x 3 mm, weight 47.8 g, heavy fat), 23 August (B-655, female, ovary minute, 42.4 g, heavy fat), and 2 September (B-743, female, ovary 7 x 1.5 mm, 39.2 g, moderate fat). Charadrius alexandrinus. Snowy Plover. This species is an uncommon transient in Nevada. I have records of single birds of Henderson Slough on 16 and 23 August 1966. A female (B-627, ovary 5 x 3 mm, 31.2 g, light fat) was collected on 16 August. These appear to be the first fall records for southern Nevada. Arenaria interpres. Ruddy Turnstone. Alcorn (Condor 44:81, 1942) lists the single previous Nevada record of this species. A male (B-665, left testis 3 x 0.5 mm, 74.4 g, light fat) was collected 1.5 miles west of Logandale on 13 September 1966. Erolia bairdi. Baird's Sandpiper. Hayward et al. (op. cit., p. 9) give the only previous report of this species for southern Nevada. There is an unpublished record for Corn Creek on 22 April 1946 (DGRNR, January-April 1946). I have additional records for three birds 1.5 miles west of Logandale on 13 September 1966 (female collected, B-666, ovary 3 x 3 mm, 32.3 g, light fat) and for one at Tule Springs Park on 2 May 1967. Crocethia alba. Sanderling. The Sanderling has not been reported previously for southern Nevada. I saw a single bird at Tule Springs Park, 1-3 May 1966.