CICADELLINAE: PART 2. NEW WORLD CICADELLINI 521 
portion of proepimeron bordering posterior eye margin and a black area at 
anterior margin of mesepisternum. Darker variety with horizontal black mark- 
ings of pronotum more extensive and with anterior pronotal margin bordered 
with black; scutellum mostly black with two median spots and one lateral 
spot on each side, pale. 
Holotype and eight additional males, Tingo Marfa, Peru, October 16, 670 
m. (W. Weyrauch), ‘““WKW 312”; one female, Mojinga Swamp, Panama, 
November 27, 1951 (F. S. Blanton) (USNM). Five males, Monsén Valley, 
Tingo Maria, Peru, December 9, 1954 (E. I. Schlinger and E. S. Ross) 
(CAS). Three males, C. Esperanza, Beni, Bolivia, Mulford Biological Expedi- 
tion, 1921-1922 (W. M. Mann) (USNM). One male, Yungas de Palmar, 
Bolivia, 100 m., November, 1960 (A. Martinez) (SSM). Two males, Rioja, 
Peru (ZIL). The specimens from Bolivia and Rioja, Peru are of the darker 
variety. 
Mesogonia evansi, n. sp., is readily separated from other species of the genus 
by its 2:0:0 hind femoral setal pattern. I believe the Panama specimen is ac- 
curately labeled. It may have been adventive. This is the species that would 
have been the type-species of Santarema Melichar had it been described. A 
specimen in Budapest, labeled ‘‘Santarema acocephala M”’ and a “‘typus”’ label 
in HNHM belongs here. To avoid future confusion, it should be noted that a 
pin, in MMB, bears an entire specimen of Tlagonalia nigroguttata (Signoret) 
and a part of a male specimen of Mesogonta evansi, n. sp. The pin also bears a 
label: ““‘Yurimaguas”. M. evansi would fit Melichar’s (1926a:344) key; T. 
nigroguttata would not. 
67. ROTIGONALIA, NEw GENUusS 
Ficures 431, 432 
Type-species: Cyclogonia rudicula var. concedula Melichar. 
Length 5.9-7.1 mm. 
Head only slightly produced ‘and with anterior and posterior margins 
almost parallel, median length of crown from one-third to slightly more than 
one-half interocular width and from one-fifth to slightly more than one-third 
transocular width, anterior margin broadly rounded in dorsal view, without a 
carina at transition from crown to face, ocelli located before a line between 
anterior eye angles, each slightly closer to adjacent anterior eye angle than to 
median line of crown, crown without a transverse concavity before ocelli, sur- 
face without sculpturing, without setae, lateral clypeal sutures extending onto 
crown and attaining ocelli; antennal ledges not protuberant, in lateral view 
with anterior margins vertical to oblique and convex; clypeus flattened or con- 
vex medially, muscle impressions distinct or not, face without pubescence, 
transclypeal suture interrupted medially, clypellus continuing contour of face 
or with its lower portion more nearly horizontal, its laterobasal portion 
swollen (R. concedula (Melichar)) or not. 
Thorax with pronotal width less than transocular width of head, lateral 
margins parallel or slightly convergent anteriorly, dorsopleural carinae com- 
plete, posterior margin varying from slightly convex to slightly concave, disk 
