Notomastus tenuis Moore, 1909

Notomastus tenuis Moore, 1909: 277, Pl. 9, fig. 55; Hartman 1947: 420; Berkeley and Berkeley 1952: 103; Blake 2000: 85, figs 4.15; Dean 2001: 81; 2004: 147; Hernández-Alcántara and Solís-Weiss 1998: 712; 2003: 4.

Eisigella tenuis Berkeley & Berkeley, 1942: 198.

Notomastus (Clistomastus) tenuis Hartman 1969: 397, figs 1-5; Reish 1968:89; Kudenov 1975: 220; Calderón-Aguilera and Jorajuria-Corbo 1986: 55, fig. 8 a–c .

Notomastus? tenuis Ewing, 1984a: 14.26.

Type locality.

San Diego, California, USA, 1902-1903, intertidal. Coll. E. C. Starks.

Type material.

Holotype (CAS-019718).

Material examined.

(80 specimens)California: Anaheim Slough Collections: (LACM-AHF), Stn. 903-38 (7 specimens), December 5 1938; (5 specimens), Stn. 905-38, December 7 1938; (2 specimens), Mission Bay, Stn. 1211-38; Baja California: Las Animas Island (LACM-AHF), Stn. F3893-11831 [28°41'30"N, 113°02'00"W] (1 specimen), 207 m, December 1 1967, Coll. VELERO IV; Baja California Sur: (LACM-AHF), Cabo Falso, Stn. F4285-13774 [22°35'00"N, 109°35'00"W] (1 specimen), 426.72 m, January 22 1970, Coll. VELERO IV; Sonora, Punta Arboleda (ICMyL-UNAM), Stn. 15 [26°51.1'N, 110°06.5'W] (13 specimens), 49.8 m, March 12 1985, Coll. PHA; Estero Tastiota (ICMyL-UNAM), Stn. 48 [28°16.4'N, 111°36.6'W] (5 specimens), 60.2 m, March 18 1985, Coll. PHA; Sinaloa: El Fuerte River (ICMyL-UNAM), Stn. 52 [25°39.9'N, 109°28.6'W] (5 specimens), 28.6 m, March 20 1985, Coll. PHA; Santa María Bay (ICMyL-UNAM), Stn. 3 [25°02.4'N, 108°31.7'W] (1 specimen), 32 m March 10 1985; Stn. 05 [24°54.6'N, 108°45.3'W] (5 specimens), 120 m, March 10 1985; Jalisco: Cabo Corrientes (LACM-AHF), Stn. F4205-13756 [19°51'30"N, 105°58'00"W] (1 specimen), 426.72 m January 18 1970, Coll. VELERO IV. Nayarit: Punta Piedras, San Juanito Island (LACM-AHF), Stn. F4296-13768 [21°53'00"N, 106°50'00"W] (1 specimen), 256 m January 20 1970, Coll. VELERO IV; North Rock Consag (ICMyL-UNAM), Stn. 38 [31°08.3'N, 114°13.3'W] (4 specimens), 71.9 m March 16 1985; Stn. 39 [30°59.4'N, 114°04.1'W] (12 specimens), 106.4 m, March 16 1985, Coll. PHA.

Records.

USA: California (Moore 1909, Hartaman 1947, Berkeley and Berkeley 1952, Blake 2000), Costa Rica (Dean 2001, 2004).

Remarks.

Notomastus tenuis was described from California by Moore (1909). Fauchald (1972) reported it from Baja California, Baja California Sur, Nayarit and Jalisco while Hernández-Alcántara and Solís-Weiss (1998) reported it from the Gulf of California. Examination of specimens of both author's collections indicated that they were actually Notomastus hemipodus Hartman, 1945. The report by Calderón-Aguilera and Jorajuria-Corbo (1986) for San Quintín Bay seems to be incorrect, as the description and illustrations do not correspond to Notomastus tenuis . The records of Notomastus tenuis from western of México are therefore considered doubtful.