REWSION OF SUBGENUS PHYTALUS — SAYLOR 165 



segment, very sparsely punctured clypeus, and smoother front ; indi- 

 viduals are not lacking, however, in which almost all intermediate 

 degrees of these characters appear, and possibly when more specimens 

 have been seen from northern Mexico and southeastern United States 

 the name P. vanalleri Schaeffer may have to be withdrawn altogether. 

 The antennal club of P. vanalleri Schaeffer is very variable ; in most 

 specimens it is as long as or longer than the stem and scape combined, 

 while in almost all specimens of typical P. ohsoUta Blanchard the 

 club is noticeably shorter than the scape and funicle combined (aver- 

 ages about one-fifth longer than the funicle) as w^ell as being lighter 

 in color. The clypeus of typical P, ohsoleta Blanchard is almost 

 always densely punctured, while that of P. vanalleri Schaeffer is 

 sparsely punctured at the middle of the clypeal suture. 



PHYLLOPHAGA (PHYTALUS) BILOBATATA, new name 



Platk 9, FiGUBE 4d; Plate 10, FiotniES 4a-4c 



Phytalus cephalicvs Horn, Trans. Amcr. Ent. Soc, vol. 12, p. 120, 1885 (not 

 cephalica LeConte, 1856). 



Male. — Elongate, dark castaneous to piceous, shining, usually gla- 

 brous above. Head with front densely variolate-punctate ; clypeal 

 suture rather deeply impressed, slightly bisinuate; clypeus broad, 

 deeply and very narrowly emarginate at apex, giving a bilobed ap- 

 pearance to the apical margin, surface slightly tumid in some ex- 

 amples, densely, coarsely, and somewhat confluently punctured; an- 

 tennal club slightly smaller than the stem, antennae 10-segmented. 

 Thorax with a faint suggestion of a longitudinal sulcus on the disk 

 in some examples, sides obtusely rounded, hind angles obtuse but dis- 

 tinct, margin entire, disk finely, sparsely and rather regularly punc- 

 tured, a more or less irregular smooth space at middle. Elytra mod- 

 erately densely and rugosely punctured, sometimes with very minute 

 testaceous hairs. Pygidium very convex, densely and rugosely punc- 

 tured, the punctures each with a short hair; apex broadly rounded, 

 with a few longer hairs. Abdomen convex, very spai*sely and finely 

 punctured at middle, segment 5 depressed behind, a small group of 

 sparse, long, erect hairs on each side of the segment; segment 6 ele- 

 vated, densely punctate, abruptly declivous at base, in some cases 

 with a faint trace of a longitudinal impression. Posterior spurs 

 long, narrow, and free. 



Female. — Antennal club much smaller ; abdomen more convex, last 

 segment longer and less densely punctured ; otherwise similar to male. 



Length, 15-18 mm. Width, &-7.5 mm. 



Remarks. — All positively identified material is from Arizona ; local- 

 ities represented are Nogales, Carr Canyon, Fort Grant, and "Chiri- 



