Homoptern'H!^ famihi Membracida3. 343 



increasing in distinctness from the middle to the apex, the latter 

 broad, truncated, depressed, terminally bisinuate-tridentate. 

 Type D. laticauda. 



Dcctomira laticcmda. PI. VII, f. 21. 

 Darnif^ laticauda, Fairm., Ann. Eut. Ser. 2, iv, p. 483, 22 



(i84(;). 



Constancia (H. Clark). Brit. Mus. 



The Darnis lineola, of Walker, appears to be a new genus 

 allied to Tomogonia, of Stal ; D. histriga, a species of Rhcxia ; 

 D. tripartita and D. f'tapida, so far as I can judge from Fair- 

 maire's figure of //. vrsus, are referable to Hijphm-f of Stal. 



The old genus HemiptyclKi has been split up l^y Stal as 

 follows: — 1. Proterpia, type //. rotundicornis , Fairm.; 2. EiLalthe, 

 type //. kcvigata, F. ; 3. Buhalopa, type H. furcata, F. ; 4. 

 llcmiptijclia, typical; 5. PyrantJic, type H. Jlava, F.; 6. Alcineone*, 

 type //. centrotoides ; 1 . Hyphinoe, type H. cuneata, Germ.; 

 I shall enumerate here the species referable to the tAvo last 

 groups in which the Collection of the British Museum is rich. 



ALCMKONE, Stal. 



, 1. Alcmcone lata. 



Hemipdycha lata, Walker, List Homopt. ii, p. 571, 18. (1851). 

 Ilab. — ? Type Brit. Mus. 



2. Alrmfone p)icea. 



Hemipdycha picca, Fairm., Ann. Ent. Ser. 2, iv, p. oKJ, 13 

 (1846). 



Brazil. Brit. Mus. 



Erroneously rol'crred to J'yrantlu' by \)v. Stal ; it is nearly 

 allied to A. centrotoides. 



* JVas-wnia, Stal, is more nearly allied to this genus than to typical 

 JL'iH/pti/cha. 



