272 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



Male. — Fifth ventral segment broadly, feebly, arcuately emargi- 

 nate; the sixth shorter but broader at base than the last dorsal, sin- 

 uately truncate at apex; last dorsal truncate, very feebly emarginate 

 at middle. (Plate 43, fig. 2.) 



Female.— Fifth ventral truncate; sixth ventral large, as long as 

 but narrower at base than last dorsal, elongate-oval at tip; last dorsal 

 elongate-oval at tip. (Plate 43, fig. 3.) 



Ti/pe locality.- — Oracle, Arizona. 



Type, allotype, and one paratype. — Cat. No. 23120, U.S.N.M. 



Described from three specimens, the type and allotype from Oracle, 

 Arizona, July 11 and 18, 1898 (Hubbard and Schwarz), and a female 

 labeled " Arizona, Morrison," from the Hubbard and Schwarz col- 

 lection. 



Related to delicatida Fall, from which aeyra may be known by the 

 much larger size, the longer rows of elytral punctures, the narrower 

 intervals, the elytral fascia median, narrow, strongly so toward the 

 suture where it is interrupted, the prothorax more feebly constricted 

 at apical third and the different sexual characters. Readily separated 

 from puncticollis, to which it bears some resemblance, by the structure 

 of the antennae and the elytral punctures coarser, deeper, and more 

 remote. 



CYMATODERA DELICATULA Fall. 



Hot Springs, Arizona, June 25 (Schwarz and Barber) ; two females. 



CYMATODERA TURBATA Horn. 



Dimmit County, Texas (F. G. Schaupp); Alice, Texas, June 15, 

 1904 (H. S. Barber); Texas (J. B. Smith); Hot Springs, Arizona, 

 June 22, 26, 1901 (Schwarz and Barber). Four males; eleven fe- 

 males. 



Doctor Horn in the original description states "I am unable to de- 

 tect any sexual differences in the specimens before me, the last abdom- 

 inal segments of the dorsal and ventral aspect being oval at tip." 

 Both sexes are before me and, as Doctor Horn evidently had only the 

 female sex, I give the characters for both sexes. 



Male. — Fifth ventral segment broadly, feebly arcuately emarginate; 

 sixth ventral short, as broad at base but elsewhere much narrower and 

 slightly shorter than last dorsal, sub truncate at apex; last dorsal 

 semicircular, truncate at apex. (Plate 43. fig. 4.) 



Female. — Fifth ventral segment truncate at apex, sixth ventral 

 smaller than last dorsal, semicircular; last dorsal semicircular. 

 (Plate 43, fig. 5.) 



CYMATODERA PALLIDA Schaeffer. 



Chiricahua Mountains (Cave Creek Canon), Arizona, July 3, 1897 

 (H. G. Hubbard). (Male sexual characters, plate 43, fig. 6.) 



