Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae). Smithsonian Contributions to Zoology, number 154, 106 pages, 24 figures, 3 plates, 1974.-All known species are fully described; literature citations, synonyms, and a key to the species are provided; and known distribution is recorded and shown by map figures. All species previously ascribed to the area are listed, and the present status of each is presented. Twenty new species are added to the fauna. Ataenius waltnerhorni Balthasar is transferred to the genus Pseudataenius. The following are placed in synonymy: A. fleutiaui Paulian (=havanensis Balthasar), A. cribratus Van Dyke (= confertus Fall), A. linelli Cartwright (=languidus Schmidt), A. oblongus Horn (=sculptor Harold), A. sulcatula (Chevrolat) and A. frankenbergeri Balthasar (=brevicollis (Wollaston)), A. floridanus Brown and A. solitarius Blatchley {=rhyticephalus (Chevrolat)). Lectotypes are designated for Pseudataenius socialis (Horn), Ataenius insculptus Horn, A. ovatulus Horn, A. cylindrus Horn, A. aequalis Harold, A. sulcatulus (Chevrolat), and A. cognatus (LeConte). Neotypes are established for A. confertus Fall, A nocturnus (Nomura), A. texanus Harold, and A. strigatus (Say). New taxa are Pseudataenius contortus (Florida), Ataenius edistoi (South Carolina), A. parkeri (Arizona), A. rugopygus (Texas), A. duncani (Arizona), A. superficialis (Florida), A. pseudohirsutus (Texas), A. sabinoi (Arizona), A. vandykei (California), A. barberi (Arizona), A. nunenmacheri (Arizona), A. stroheckeri (Florida), A. glaseri (Maryland), A. punctifrons (Minnesota), A. utahensis (Utah), A. hesperius (Arizona), A. sciurus (Florida), A. woodruffi, (Florida), A. griffini (Texas), and A. stephani (Arizona). OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SI PRESS NUMBER 4820. SERIES COVER DESICN: The coral Montastrea cavernosa (Linnaeus).
