162 PROCEEDINGS OF THE NATIONAL MUSEUM vol.86 



Mexico, and seen by me from Jalapa and Monterrey in Mexico 

 (June). A comparison of the external features and of the genitalia 

 of a cotype of Bates' species with Horn's species proves the two are 

 identical. This species, to date, has been very rare in the United 

 States, and less than a dozen specimens in American collections are 

 known to me as having been taken within our boundaries; it was 

 cited by Bates as being rather numerous at Las Vigas, Veracruz. 

 The species is named for my good friend Dr. M. \V. Sanderson. 



PHYLLOPHAGA (PHYTALUS) OMANI Sanderson 



Plate 9, FicxmES 2a-2e 



Phyllophaga (Phytalus) otnani Sanderson, Journ. Kansas Eut Soc, vol. 10, 

 p. 66, 1937. 



Male. — Elongate, cylindrical, yellow-testaceous, the head piceous, 

 surface shining. Head with front moderately and not closely punc- 

 tured, the punctures separated by one to several times their own 

 diameters; clypeus deeply marginate and moderately punctured; cly- 

 peal suture lightly impressed. Antennae 9-segmented, the club as 

 long as the entire stem, unicolorous. Prothorax moderately, rather 

 unevenly punctured, the punctures closer along the anterior and basal 

 margins; sides parallel in basal half, then gradually rounded to apex; 

 with an indistinct fuscous spot near the rounded lateral margins. 

 Elytra punctured like thorax, somewhat rugose, costae except sutural 

 obsolete. Pygidium rather strongly convex, finely and evenly punc- 

 tured with a few short hairs at apex, remaining surface glabrous. 

 Abdomen somewhat flattened at middle and with vague longitudinal 

 impressions on segments 3 and 4; segment 5 plane; segment 6 slightly 

 excavated at middle and with a small punctate elevation each side 

 of middle. One of the spurs of the hind tibia short and fixed. 

 Upper portion of the claw nearly as wide as lower and distinctly 

 longer. Lower claw margin very finely and minutely, irregularly 

 crenulate. 



Female. — Club of antennae shorter than funicle; hind tibial spurs 

 free; abdomen somewhat flattened at middle; pygidium transverse 

 and evenly punctured. Otherwise similar to male. 



Length, 14 mm. Width, 6 mm. 



EXPLANATION OF PLATES 9 AND 10 



1, Phyllophaga (Phytalvs) sandersonia, new name; 2, P. (P.) omani Sander- 

 son; 3, P. (P.) georgiana (Horn) ; 4, P. {P.) bilobatata, new name; 5, P. (P.) 

 pallida (Horn); 6, P. (P.) sonora, new name; 7, P. (P.) ohsolcta vanalleri 

 (Sehaeffer). 



Letters indicate views, as follows : a. En face view of male genitalia ; 6, side 

 view of male genitalia ; c, tarsal claw ; d, female genitalia ; e, en face-ventral 

 view of male genitalia. 



