﻿673. 

 CIXIUS DIONYSII. 



Order Homoptera. Fam. Fulgoridae. 



Type of the Genus, Cicada nervosa Linn. 

 Cixius Lat., Curt. — FlataFai., Germ. — Cicada Linn., Fab. 



Antennce inserted in cavities below the eyes on each side of the 

 face (4), short and 4-jointed, 2 basal joints stout, 1st transverse, 

 2nd ovate, the apex depressed, 3rd small globose, but elongated 

 and acuminated on one side, 4th a long naked seta (4 a) . 

 Rostrum as long as the face, bent under the breast and reaching 

 to the hinder coxae. 



X,a6rMm short, elongate-trigonate, acuminated (3). 

 Mandibles and Maxillce long, setiform and very slender. 

 Labium scarcely so long as the face, slender and triarticulate, 

 basal joint concealed under the clypeus, 2nd very long, 3rd 

 rather shorter (2). 

 Head lunate, the croivn hollow, short, and obtuse ; face nearly vertical, 

 very long and subovate, with 3 longitudinal ridges (1,1a the profile) ; 

 clvpeus narrow, elongate-ovate : eyes placed in a cavity on the sides 

 of the crown, globose : ocelli 2, situated on each side of the face, be- 

 tween the eyes and antenna (1 *). Thorax subcordate, rounded before, 

 with a broad short collar, triangular behind. Abdomen very short 

 and semiorbicular, often with a tuft of white cotton at the apex, espe- 

 cially in the females, ivith a strong Ovipositor composed of a horny 

 oviduct, and 2 lar-ge sheaths extending beyond the apex, and meeting 

 an incurved strong lobe projecting above. Wings ovate-trigonate in 

 repose, slightly deflexed ; superior subelliptic, coriaceous with nume- 

 rous strong, often hispid nervures, reticulated at the apex, casta 

 arched but depressed, inferior margin straight : inferior wings mem- 

 branous, shorter and broader, with several smooth longitudinal ner- 

 vures, 2 or 3 transverse ones and as many furcate at the apex. Legs, 

 4 anterior short and simple (6, afore leg): tih'ise, posterior long and 

 clavate, with a few short teeth outside and some longer spines at the 

 apex : tarsi triarticulate, anterior short and slender, with the basal 

 joint very short, and truncated obliquely, in the hinder pair they are 

 elongated (f), with the 3rd joint slender and clavate : claws small. 



DioNYSii Panz. — Curt. Guide, Gen. 1068. 2'. 



Black ; head ochreous, 2 spots on the crown and the spaces be- 

 tween the 3 elevated ridges on the face blackish, excepting the 

 clypeus ; collar and margins of thorax and scutel ochreous ; a 

 line on the sides of the abdomen scarlet : superior wings yellow- 

 ish brown, costa dotted with black, with an interrupted colourless 

 line reaching to the stigma, which is brown, the inner margin 

 slightly white ; nervures black dotted with ochre: inferior wings 

 iridescent, nervures piceous, centre of the cells fuscous : legs 

 ochreous, tips of thighs and apical joint of tarsi brown. The 

 outline figure in repose shows the natural size. 

 In the Author's Cabinet. 



Cixius is related to Asiraca (pi. 44-5) on the one hand and to 

 Issus (pi. 449) on the other. It is well known that in some of 

 the cognate genera there are curious appendages to the an- 



