A revision of the Palaeocorystoidea and the phylogeny of raninoidian crabs (Crustacea, Decapoda, Brachyura, Podotremata) 3215 Author Van Bakel, Barry W. M. Author Guinot, Danièle Author Artal, Pedro Author Fraaije, René H. B. Author Jagt, John W. M. text Zootaxa 2012 2012-02-29 3215 1 1 216 https://biotaxa.org/Zootaxa/article/view/zootaxa.3215.1.1 journal article 10.11646/zootaxa.3215.1.1 1175­5334 5248640 B20CD4A6-D150-4CCF-931F-ED6D7EA54E8C Genus Orithopsis Carter, 1872 Orithopsis Carter, 1872: 530 . Type species. Necrocarcinus tricarinatus Bell, 1863 , by monotypy (= Orithopsis bonneyi Carter, 1872 ). Species included. Orithopsis angelica ( Fraaije, 2002 ) ( Fig. 22G ), O. carinata ( Feldmann, Tshudy & Thomson, 1993 ) , O. ? iserica (Fritsch in Fritsch & Kafka, 1887 ), O. ? youngi ( Bishop, 1983c ), O. siouxensis ( Feldmann, Awotua & Welshenbaugh, 1976 ) , O. ? transiens (Fritsch in Fritsch & Kafka, 1887 ), and O. tricarinata ( Bell, 1863 ) . Remarks. Schweitzer et al . (2010: 82) listed only O. bonneyi and O. tricarinatus [ sic ] for Orithopsis . The synonymy of these two taxa had previously been, however, discussed at length by Wright & Collins (1972) , Collins (2003) and Guinot et al . (2008) ; our examination of the types of both taxa substantiates that view. Larghi (2004: 530) stated that Orithopsis was one of the genera most similar to Corazzatocarcinus and separated them by the ‘marked hexagonal outline and distinct epibranchial lobes’ of Orithopsis . Reduction of both P4 and P 5 in Corazzatocarcinus sets it apart from Orithopsis and excludes it from Orithopsidae .