428 PROCEEDINGS OF THE ACADEMY OF [June, 



particularly on the metazona ; humeral angle of the metazona and ven- 

 tral half of the lateral lobes apple green, Mesonotum, mesopleura, meta- 

 notum and metapleura of the general tint dorsad with a distinct con- 

 tinuation of the postocular bar at their suture and the ventral portion 

 of the pleura apple green, variegated with blotches of blackish chiefly 

 along the sutures. Abdomen of the general color; recurved apex of 

 the male abdomen blackish, the subgenital plate with two subcircular 

 spots of olive yellow separated by a narrow line of black, cerci greenish- 

 yellow proximad, blackish distad, supra-anal plate olive yellow. Ceph- 

 alic and median limbs oil green. Caudal femora oil green with the 

 genicular arches ochraceous-rufous ; til^ite oil green becoming blackish- 

 brown distad, spines brownish with black tips. 



Aleasurements. 



Length of body, 15.2 mm. 17.5 mm. 



Length of pronotum, 2.6 " 3.2 " 



Greatest width of pronotum, 2.5 '' 3.1 " 



Length of caudal femur, 10.2 " 10.5 " 



A paratypic series of two males and three females, including the 

 types, have been examined. They are quite constant in size and color- 

 ation. 



Dellia ovatipennis n. sp. 



Type: 9 ; Carrillo, Costa Rica. [Hebard collection.] 

 Distinguished by the ovate tegmina, which are quite different from 

 the linear type found in the other species, and also in the coloration ; 

 the blackish genicular region of the caudal femora resembling D. 

 insulana. 



Size rather small (when compared with females of D. miniatula and 

 himaculata) ; form as usual in the genus ; surface polished, the metazona 

 rather irregularly and feebly punctate. Head with the occiput con- 

 siderably elevated, evenly descending to the vertex; interocular space 

 narrow but equal to half the terminal width of the fastigium; fastigium 

 very slightly shorter than the basal width, tapering, apically truncate, 

 a very slight median longitudinal depression present; apex of the 

 fastigium, when viewed laterad, rounded into the retreating face, the 

 f astigial process losing its identity a short distance ventrad of the inser- 

 tion of the antenntE; lateral ocelli situated at the base of the fastigium 

 on the supra-antennal ridge, median ocellus placed at the ventral base 

 of the fastigium; eyes ovate reniform, slightly but distinctly elevated 

 above the vertex, greatest length distinctly greater than the length of 



