Records data of all butterflies and skippers collected in New Mexico from 1871 -1977. Also includes records from 1978 to present for minimum of one record for each county, drainage, and mountain range, plus collecting/observation guide. Tabulates 448 taxa (about 25,000 individual specimens) including 292 unequivocably reported full species from NM, organized according to the Miller-Brown checklist amended by Ferris. Lists counties (including Chihuahua, Sonora, NE Arizona, and Trans-Pecos Texas), localities, dates of collection or observation (including early and late), and collector or source of each record.