54 PROCEEDrNTGS OF THE NATIONAL MUSEUIVI vol. us 



Oxacis barbara Arnett 



The eighteen specimens of this species collected at Tornillo Flat, 

 3200 ft., May 5-12, do not agree very well with the type specimens of 

 the species. They do agree with this species better than with any 

 other. I prefer to report this collection of specimens under this name 

 pending further study of the species instead of describing this series as 

 a new species. These specimens differ from the type series by the 

 paler markings and their smaller size. The type locality is Lucedale, 

 Miss. 



Oxacis trimaculata Champion 



Plate 3 

 This widespread and extremely variable species was collected at 

 light and on lechuguilla (Agave lechuguilla) at Boquillas, May 13-28, 

 and at light May 14 at Santa Elena Canyon (pi. 4 bottom). 



Oxacis cana (LeConte) 



Twenty-five specimens of this species were collected as follows: 

 Chisos Basin, May 3-24; Tornillo Flat, May 12; Panther Junction, 

 May 24; Boquillas, Maj'" 23; and Santa Elena, ^i&j 14. 



Summary: A new species is described, Oxycopis howdeni, and 

 eight other species are reported from Big Bend National Park. Two 

 of the species, Sparedrus depressus and Oxacis angustata are recorded 

 in the United States for the first time. These species may be identi- 

 fied by the descriptions and kej^s in Champion (1889, 1890) and 

 Arnett (1951, 1953, 1961, 1963). 



Literature Cited 



Arnett, R. II., Jr. 



1951. A revision of the Nearctic Oedemeridae (Coleoptera). American 

 Midi. Nat., vol. 45, pp. 257-391. 



1953. Beetles of the oedemerid genus Vasaces Champion. Proc. U.S. Nat. 

 JNIus., vol. 103, no. 3317, pp. 87-94. 



1961. Contribution toward a monograph of the Oedemeridae, 14: A kej' 

 to and notes on the New World genera. Coleopt. Bull. vol. 15, 

 pp. 49-64. 



1963. The phenogram, a method of description for studies on Oxacis (Cole- 

 optera, Oedemeridae). Coleopt. Bull., vol. 17, pp. 6-18. 

 Champion, G. C. 



1889, 1890. Ileteromera (cont.). Part 2 of vol. 4 of Coleoptera in Godman 

 and Salvin, Biologia Centrali-America, 1889, pp. 109-120; 1890, 

 pp. 121-165, pis. 5 (figs. 19-25), 6-7, 21 (figs. 1, 5). 

 Dice, L. R. 



1943. The biotic provinces of North America, 78 pp. 

 HowDEN, Henry F. 



1960. A new species of Phyllophaga from the Big Bend Region of Texas 

 and Coahuila, with notes on other Scarabaeidae of the area, 

 Canadian Ent., vol. 42, pp. 457-464. 



