1892] MARYLAND ACADEMY OF SCIENCES. 175 



This superb insect appears to be quite common in 

 southern Mexico ; but it has not yet been found in any of 

 the provinces bordering the territory of the United 

 States. It is a genuine tropical form which extends at 

 least as far south as to the Isthmus of Panama. 



2. Z. calochroma Walker, Briif. Mus. List. Homopt. 

 Suppl. p. 4, Z. sniaragd^ila Walker, Insecta kSaund. 



o 



Homopt. p. 4, Z. callichroma Stal, Stettin, Ent. 

 Zeit. vol. 25, 1862, p. 57. 



Also inhabits Mexico and extends southward in dis- 

 tribution as far as Bogota, Venezuela. 



It is likewise a tropical form, which is quite variable 

 in size and in the pattern of marking of the wings. 



ADDITIONS TO THE FAMILY CICADIDJl. 



By p. R. UIILER. 



CICADA Linn. 

 1. C. sordidata. New sp. 



Narrow, obscure fulvous, extensively spread with 

 minute, prostrate, bronze pubescence above, covered with 

 white powder beneath, and on the face and coxae, mark- 

 ings obscure. Head across the eyes wider than the base 

 of the pronotum, the vertex is chiefly blackish piceous, 

 but it has a pale brown spot each side, midway between 

 the ocelli and eyes, the sunken transverse line in front of 

 the anterior ocellus waved, the eyes quite prominent, 

 front blunt, with the transverse ribs slender and piceons, 

 rostrum greenish yellow, stout, reaching to near the tip 

 of the posterior coxae. Pronotum short, a little narrow- 

 ing anteriorly, fulvous, with the posterior wide margin, 

 the sutures, wedge shaped central mark and transverse 

 ribbed lunule behind it piceous ; anterior margin reflexed 

 lateral margin' a little sinuated behind the middle, with 



