4 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



TABLE OF NORTH AMERICAN TRIBES OF PLATYRHININAB 



1. Beak not or hardly longer than head 2. 



Beak elongate ; antennae of male longer than those of female 4. 



2. Scrobes dorsolateral, subterminal; antennae of male longer than those of 



female Discotenini, new tribe. 



Scrobes lateral, foveiform, almost always covered by lateral margin of beak_3. 



3. Eyes emarginate ; scrobes large, median, irregular — Phaenithonini, new tribe. 

 Eyes entire Platyrhinini Bedel (1882). 



4. Eyes more or less approximate on the front Eurymycterini, new tribe. 



Eyes lateral 5. 



5. Eyes rounded Allandrini, new tribe. 



Eyes oblong-oval, longitudinal Meeonemini, new tribe. 



DISCOTENINI, NEW tribe 

 Genus DISCOTENES Labram and Imhoflf 



Discotenes Labram and Imhoff, Singulorum generum Curculionidum, 1842, part 1. 



Type, coelehs Labram and ImhofE, monotype. 

 Phanosolena Schaeffeb, Journ. N. Y. Ent. Soc, 1904, vol. 12, p. 234. 



Type, nigrotuherculata Sehaeffer, monotype. 



Two species are described for North America, and these may be 

 separated by the following table: 



TABLE OF NORTH AMERICAN SPECIES OF DISCOTENES 



Eyes very close to antennal scrobes ; body black beneath, ochraceous above, 

 variegated with black patches on thorax and elytra. 



nigrotuberculata Sehaeffer. 



Eyes distinctly separated from antennal scrobes; larger and darker, beak of 

 male on each side above antennal fossae very convex, impressed on median 

 line arizonica Sehaeffer. 



DISCOTENES ARIZONICA Schaefifer 



Phanosolena arizonica Schaeffer, Trans. Amer. Ent. Soc, 1906, vol. 32, p. 269. 



No specimens attributable to the species are found in the collec- 

 tions of the United States National Museum. It is recorded from 

 the Huachuca Mountains, Arizona, August 10. 



DISCOTENES NIGROTUBERCULATA Schaeffer 



Phanosolena nigrotuberculata Schaeffeb, Journ. N. Y. Ent. Soc, 1904, vol. 12, 

 p. 235. 



This species is described from Brownsville, Tex. The National 

 Museum collection contains nine specimens from this locality, col- 

 lected by C. H. T. Townsend, June 7, 1895; Hubbard and Schwarz, 

 June 9; H. S. Barber, May 8, 1904; and Jones and Pratt, March 

 20, 1908 (six specimens). 



A complete series of drawings of the characters of this species 

 is given and will serve for comparison of these characters as we 

 progress through the group. 



