MORGAN HEBARD 263 



further citation of author. This species is Aeoloplns regalis of 

 Scudder and not Caloptenus regalis of Dodge. Scudder had a 

 species of Aeoloplus, which he described and referred to regalis 

 of Dodge, but with uncertainty, as his comments on page 73 show. 

 Had Scudder giYQw Aeoloplus regalis Dodge as genotype, Caudell's 

 action would have been correct; but it is the species described by 

 Scudder, not Dodge's species, which Scudder designated as geno- 

 type. It has been ascertained that Caloptenus regalis Dodge is 

 a member of the genus Mela^ioplus; Aeoloplus regalis Scudder 

 has been correctly renamed by Caudell,'^ and now stands as Aeolo- 

 plus bruneri Caudell, type of the genus Aeoloplus. 



Aeoloplus eremiaphila^ new species (Plate XXIX, figs. 2 and 3.) 



The present species is the smallest known representative of 

 the genus. The tegmina vary from ovate, but attingent, to a 

 half fully-developed condition. The caudal femora do not have 

 the margin of the ventral surface produced proximad in a shield- 

 ing plate. In position we would place this insect after A. chcn- 

 opodii (Bruner) and before A. turnbuUi (Thomas), to the latter 

 of which species it shows nearest relationship. 



Comparing series including the types of chenopodii and eremia- 

 philo, the former species is found to be larger and slightly heavier 

 in structure, with vertex slightly broader, eye not as large in 

 relative proportion, in length only slightly exceeding the genae, 

 caudal margin of pronotum much more truncate, tegmina ovate 

 and lateral, never attingent, subapical tubercle of male subgen- 

 ital plate less acute, and coloration and color pattern distinctive. 



Compared with a series of the more closely related turnhulli, 

 that species is found to differ in its larger size, slightly more pro- 

 duced vertex, distinctly smaller eye in relative proportion, which 

 in leoigth is about equal to or slightly less than that of the genae, 

 less definitely atrophied tegmina and wings even in the condition 

 of maximum reduction, presence of a green as well as a brown 

 color phase and coloration and color pattern distinctive. 



Type. — cf ; Foothills of Singatse Range at Mason, Lyon 

 County, Nevada. Elevation, 4600 feet. September 6, 1910. 

 (Rehn and Hebard.) [Hebard Collection, Type no. 485.] 



Size very small for the genus; form moderately robust, medium for the genus. 

 Fastigium of vertex very blunt, very slightly produced; eyes prominent, in 



" Proc. Ent. Soc. Wash., viii, p. 134, (1907). 

 * From kp-ntxla and <^iXr;, a lover of the desert. 



TRANS. AM. ENT. SOC, XLV. 



