1905.] 



NATURAL SCIENCES OF PHILADELPHIA. 



431 



ocular region very narrow, the eyes subcontlguous in the male;fastigium 

 much broader proximad than long, slightly tapering, the apex truncate 

 and itself equal to the length, with a slight median excavation dorsad; 

 lateral view of the fastigium with the apex broadly truncate and with 

 a distinct dorsal angle in the male, slightly arcuate and with the angle 

 reduced in the female; frontal costa extending but little below the ven- 

 tral base of the fastigium and distinctly sulcate in the male, about limited 

 to the ventral face of the fastigium and very slightly sulcate in the 

 female; lateral ocelli placed at the base of the supra-ocular margin of 

 the fastigiiun, median ocellus placed slightly below the insertion of the 

 antennae; face very strongly retreating in the male, distinctly declivent 

 in the female, slightly concave in both sexes; eyes subreniform, quite 



Fis. 28. 



JodacrisC!) costaricensis n. sp. 



Fig. 29. 



Female type. Fig. 28. — Lateral view. Fig. 29. 

 — Dorsal view. 



prominent in both sexes but very prominent in the male, considerably 

 elevated above the interocular region, length of the eye distinctly 

 (male) or slightly greater than the infra-ocular length of the gense; 

 antennte of male slightly longer than the head and pronotum, filiform, 

 slightly depressed distad. Pronotum very slightly tectate, median 

 carina weakly indicated, no lateral carinse present but humeral ajigie 

 apparent; cephalic margin produced rotundate with a distinct but 

 shallow median emargination, caudal margin very obtuse-angulate; 

 transverse sulci three in number, all more deeply indicated in the male 

 and of which the caudal alone intersects the median carina in the male, 

 cephalic margin bordered caudad by a distinct depression which has the 

 appearance of a sulcus in the female; metazona strongly punctulate, 



