LETH.EUS. 



87 



subclaval area brownly punctate, lateral margin impunctate, sub- 

 lateral area coarsely punctate, apical margin and inner angular 



area fuscous, the last with a distinct 

 elongate fuscous spot ; lateral margins 

 of sternum and posterior margin of 

 metasternum luteous ; coxae, bases of 

 femora, bases of anterior tibiae and 

 extreme apex of anterior femora 

 ochraceous ; antennae ochraceous, basal 

 and apical joints infuscated ; head 

 and anterior lobe of pronotum gla- 

 brous ; posterior lobe coarsely punc- 

 tate ; corium sparingly punctate ; 

 membrane not I'eaching apex of pen- 

 ultimate abdominal segment. 

 Length 5i millim. 

 Hab. Assam ; Shillong (Be La 

 Toiiclie). 



Fig. <6'6. — Xaicdarensia 2}edafa. 



Genus LETHJEUS. 



Letliasus, Dall. List Hem. ii, pp. 532 & 557 (1852) ; Fieber, Eur. 



Hem. pp. 50 & 193 (1861) ; Sttd, Ofv. Vet.- Ah. Fork. 1872, no. 7, 



p. 59 ; id. En. Hem. iv, p. 164 (1874). 

 Coptoneurus, Puton, Ann. Sac. Ent. Fr. 1869, p. 141. 

 Mimicus, Boiiffl. Sf Scott, Ent. Month. Mag. \, p. 65 (1868). 



Type, L. africanus, Dall., a West-African species. 



Distribution. Palsearctic, Ethiopian, Oriental, and Neotropical 

 Eegions. 



Head rather suiall, triangular ; antennae rather more than half 

 the Jeugtli of body, first joint nearly as long as the head, second 

 joint longest ; rostrum reaching the posterior coxse, basal joint a 

 little shorter than the head ; pronotum trapezoidal ; scutellum 

 rather large ; membrane with four veins, of which the two inner 

 are distorted near the base so as to touch the inner margin, the 

 second and third and the third and fourth united near the middle 

 by a transverse vein, forming two basal cells ; anterior femora 

 unarmed ; tarsi three-jointed, basal joint as long as the other two 

 joints together. 



A. Margins of pronotum unicolorous. 



822. Lethaeus assamensis, Dist. A. M. N. H. (7) viii, p. 507 (1901). 



Dark chocolate-brown ; head black ; a spot near each anterior 

 angle of the pronotum, two small spots in clavus (one about centre 

 and the other near apex), and two small central spots to corium 

 (one on central disk and the other at apical margin) ochraceous; 

 antennae fuscous, apical half of third joint ochraceous, fourth joint 



