35 



Paleocene of Gelinden, Belgium (Marnes heersiennes = Etage 

 Thanetien). Three species were enumerated, Dewalquea halde- 

 miana and Dezvalquea aquisgranensis from the Westphalian 

 Senonian and Dewalquea gelindenensis from the basal Eocene. 

 In the last thirty-five years several additional species have been 

 referred to this genus. These include another species from the 

 German Senonian {^Dewalquea insignis) described by Hosius and 

 V. d. Marck ; * two species from the Cenomanian of Bohemia 

 {Detvalqiiea coi'iacea and Dezvalquea pentaphylld) described by 

 Velenovsky ; f two American species from the Dakota group 

 {Dezvalquea dakotensis and Dezvalquea priuwrdialis) described by 

 Lesquereux,! both of which are fragmentary and of uncertain 

 relationship ; a species from the Raritan of New Jersey {Dezval- 

 quea trifoliata^ described by Newberry ; § and a species described 

 by Heer || from Greenland {Dezvalquea groeulandica) and subse- 

 quently recorded from Staten Island, New Jersey, North Caro- 

 lina, and Alabama. 



Hosius and v. d. Marck (loc. cit., p. 50) record the Eocene 

 species from the Senonian of Westphalia but the remains are not 

 of this species but fragments of Dezvalquea haldeniiana which is 

 common at that horizon. The European species Dezvalquea 

 insignis is recorded by Heer ^f from both the Atane and Patoot 

 beds of Greenland and by Hollick** from the Cretaceous of Staten 

 Island but both of these determinations are based upon fragments 

 of single leaves and are, in the writer's judgment, entirely untrust- 

 worthy. Attention should also be called to the possibility of 

 Celastrus arctica Heerff representing the leaflets of a Dewalquea. 



* Hos. and v. d. Marck, Palaeont. 26 : 172. pi. j2. f. iii-iij ; pi. jj. f. log ; 

 pi. 34. f. no ; pi. 3S. f. 123. 1880. 



t Velenovsky, Fl. bohm. Kreidef. 3:11, 14. //. /./. i-g ; pi. 2. f. 2 ; pi. 8.f. 

 II, 12. 1884. 



JLesq., Fl. Dakota Group, 211. pi. ^g. /. j, 6. 1892. Geol. and Nat. Hist. 

 Surv. Minn. 3 : 18. pi. A.f. 10. 1893. 



\ Newb., Fl. Amboy Clays, 129. //. 22. f. ^-7. 1896. 



II Heer, Fl. Foss. Arct. 6^: 87. //. 2g. f. 18, ig; pi. 42. f. j, 6 ; pi. 44. f. 11. 

 1882. 



*IHeer, op. cit., 86. pi. 23. f. 7 ,- //. 33. f. 14-16. 1882; ibid. 7: 37. //. 38 

 /. 3; pi. 62./. 7. 1883. 



** Rollick, Mon. U. S. Geol. Surv. 50: 106. pi. 8. f. 24. 1907, 



ft Heer, op. cit. 7 : 40. pi. 6r. f. 3, d, e. 



