126 OETHOPTEEA. 



praeapical pale annulus ; hind tibiae with a pale sub-basal annulus, in the $ fuscous, in the c? with a 

 dark plumbeous tinge, at least mesially. 

 Length of body, rf 21, $ 25 • of antennae, <J & $ , 7 ; of pronotum, tf 5, $ 6'75 ; of tegmina, <J 20, $ 24-5 ; 

 of hind femora, tf 14, $ 16 millim. 



Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith). 



This seems to be a very well-marked species and is certainly quite distinct from 

 any other form with which the writer is acquainted. Four specimens, taken in 

 August. The single female at hand shows lighter bands on the sides of the disc of 

 the pronotum and on the head. 



[9. Arphia saussureana, Bruner. 



Arphia saussureana, Bruner, Proc. U.S. Nat. Mus. xii. p. 63 (1890) \ 

 Hab. Noeth America \ Central California (L. Bruner). 



This is the smallest species of the genus and it seems to be very local in its 

 distribution, being confined to the hilly regions to the southward of San Francisco.] 



10. Arphia imperfecta, sp. n. 



A medium-sized, moderately robust insect, with rather coarsely granulate or rugate head and thorax, and 

 slightly abbreviated tegmina and wings. Apparently quite closely related to, and perhaps only 

 a variety of, A. nietana, Sauss., but differing from that species in the features indicated in the 

 synoptic table. 



Head large, high, and evenly broadening below ; frontal costa rather prominent, but with the bounding walls 

 blunt, coarsely punctate and shallowly sulcate below the ocellus; foveola of vertex inconspicuous, 

 pyriform, shallow, and provided with a well-defined median carina ; the lateral foveolae of medium size, 

 quadrate, narrowed toward the inner edge. Pronotum short, broad, and only gently widening posteriorly; 

 the median carina distinct, not greatly elevated, cut behind the middle by the posterior sulcus ; front 

 edge nearly straight, the hind edge of the disc obtuse-angled. Tegmina and wings slightly surpassing 

 the hind femora, and about reaching the tip of the abdomen, rather profusely and coarsely irrorate with 

 darker markings. Wings cinnabar-red, with a narrow fuscous band that terminates on the posterior 

 border halfway to the anal angle ; taenia broad, evenly tapering, and reaching nearly to the base ; C03tal 

 field narrowly red nearly to the tip of the wing ; apex vitreous, the veins only dusky. Hind femora 

 moderately robust, nearly reaching the tip of the abdomen ; hind tibiae brownish-testaceous, a little paler 

 near their base. 



Length of body, $ , 27 ; of antennae 7, of pronotum 5*25, of tegmina 21, of hind femora 14 millim. 



Hab. Mexico, Tlalpam (L. Bruner). 



The present form is represented by a single female specimen, taken in November. 

 Whether it is anything more than a variety of A. nietana is at present uncertain, 

 since we do not know how much that species may vary. 



11. Arphia nietana, Sauss. 



Tomonotus nietanus, Sauss. Rev. et Mag. Zool. (2) xiii. p. 321 (1861) 1 ; Thomas, Acrid. N. Amer. 



p. 212 (1873) \ 

 Arphia nietana, Sauss. Prodr. (Edip. p. 70 (1884) 3 ; Rshn, Trans. Amer. Ent. Soc. xxvii. p. 96 



(1900) \ 



