24 



PROCEEDINGS OF THE ACADEMY OF 



[Feb., 



tegmina and caudal femora shorter, the latter more robust, and the 

 whole insect lacking the prominent lateral stripe of 0. pulchella. 



Fig. 7. — Orphnlina acuta n. sp. Lateral view of female type. (X 3.) 



Size small; form somewhat robust, moderately compressed. Head 

 distinctly shorter than the pronotum, considerably elevated in both 

 sexes, the occiput more rounded in the male than in the female, the 

 latter having it almost straight; fastigium acute- 

 angulate in both sexes, but slightly more so in the 

 male than in the female, the width at the cephalic 

 angle of the eye equal to ( c? ) or slightly greater ( 9 ) 

 than the length, margins distinct, a moderately de- 

 pressed intermarginal area present on the dorsum, no 

 median carina; lateral foveolae distinct, deep, cephalic, 

 blunt elongate-lanceolate in shape; the front dorsad 

 forming a right angle with the fastigium, ventrad 

 of the antennae considerably retreating; frontal costa 

 narrow in the male regularly but slightly expand- 

 ing from the fastigium to the clyj^eus, deeply sulcate, 

 particularly dorsad of the ocellus; frontal costa in 

 the female similar to the male but subparallel from 

 between the antennse to the ocellus, the width being 

 greater and the sulcation shallower than in the male; eyes regularly 

 ovoid in the male, acute ovoid flattened cephalad in the female, in 

 both sexes very distinctly exceeding the infraocular sulcus in the 

 length; antennae slightly longer (c?) or slightly shorter ( 9 ) than the 

 length of the head and pronotum, slightly depressed and expanded 

 proxim ad , being thus very slightly ensif orm . Pronotum with the great- 

 est caudal width of the dorsum contained once and a half in the length; 

 median carina very distinct, severed in the middle, lateral carinae 



Una acuta n. 

 sp. Dorsal 

 view of head 

 and prono- 

 tum ot female 

 type. (X 3.) 



