Mr, W. L. Distant on Homoptera. 313 



Tympanoterpes alhoapicata, sp. n. 



Head, pronotura, and mesonotum olivaceous green ; head 

 with front (excluding central fascia), area of the ocelli, and 

 inner margins of eyes black ; pronotuiu with two central 

 longitudinal black lines, which are much obliquely reflected 

 both anteriorly and posteriorly, and with two small black spots 

 near their base, the incisures fuscous ; mesonotum with four 

 large black obconical spots, the two central smallest, and all 

 narrowly margined with ochraceous, a large black spot in 

 front of crucilbrm elevation which is ochraceous; abdomen 

 brownish olivaceous, bases of segments black, greyishly pilose 

 on each lateral area near base, and with a cretaceous spot on 

 each side of apical segment ; body beneath and legs brownish 

 olivaceous ; sternum thickly greyishly pilose ; a black fascia 

 between face and eyes ; ventral lateral margins more or less 

 cretaceously tomentose; tegniina and wings pale hyaline; 

 tegmina with the costal membrane and area and basal half of 

 venation olivaceous, apical half of venation, upper half of 

 basal cell, and claval area fuscous ; wings fuscous at base, 

 venation either olivaceous or fuscous. Head (including eyes) 

 about equal in width to base of mesonotum, eyes not pro- 

 tuberant ; vertex of head at area of ocelli very little longer 

 than front ; posterior pronotal angles angularly lobate ; 

 abdomen short, broad, about as long as space between apex of 

 head and base of cruciform elevation. 



Long., excl. tegm., (J ? 23-2J: mm. ; exp. tegm. 77 mm. 



Mah. Argentina {Wagner^ Brit, Mus.). 



Ollanta, gen. nov. 



Head (including eyes) broader than base of mesonotum, 

 eyes projecting beyond anterior angles of pronotum, vertex at 

 area of ocelli about or almost as long as front ; pronotum 

 shorter than mesonotum, its posterior angles lobately pro- 

 duced, its lateral margins obliquely narrowed anteriorly, very 

 slightly sinuate ; mesonotum moderately convex ; abdomen 

 short, about as long as space between apex of head and base 

 of cruciform elevation, tympanal coverings large, their apices 

 subacute, anteriorly but not interiorly covering cavity j 

 rostrum reaching posterior coxec ; opercula small, transverse, 

 only about reaching base of abdomen ; face moderately 

 globose ; tegmina and wings hyaline, the first with eight 

 apical areas. 



A genus intermediate between Proarna and Selymhria. 



Type, 0. mexicana, Dist. 



Ann. d; Mag. N. Hist. Ser. 7. Vol. xv. 22 



