A'ol. XXviii] ENTOMOLOGICAL NEWS 157 



head, with less acute facial fastigium and more robust limbs. 

 The male subgenital plate is also broadly V-emarginate in- 

 stead of rather deeply emarginate, as in crenulakim. 



Type. — 3 ; Cachi, Costa Rica. July i6, 191 1. (C. H. Lan- 

 kester.) [Acad. Nat. Sci., Phila., Type No. 531 1.] 



Size moderately large; form compressed; surface smooth, of tegmina 

 as in amaconicum. 



Head with the interspace between the eyes faintly greater than the 

 greatest width of the eye; fastigium acute but immediate apex round- 

 ed, undulate depressed, moderately sulcate, apex well separated from 

 the fastigium of the face; paired ocelli large; fastigium of the face 

 relatively acute; face very considerably bullate, rather strongly com- 

 pressed : eyes ovate in basal outline, moderately compressed, directed 

 cephalad ; antennae elongate. 



Pronotum moderately compressed (less so than in C. crenulatiim), 

 the disk narrowing cephalad with its greatest caudal width contained 

 one and two-fifth times in the greatest length of the same; cephalic 

 inargin of the disk faintly sinuato-emarginate, caudal margin of the 

 disk strongly arcuate, with a faint median emargination, lateral mar- 

 gins of the disk distinct and continuous, but broadly rounded : lateral 

 lobes of the pronotum with their greatest depth faintly greater than 

 their greatest length ; cephalic margin of the lob^s sinuate, ventro- 

 cephalic angle rounded obtuse-angulate, ventral margin strongly arcu- 

 ate, faintly flattened cephalad, caudad rounding regularly into the 

 arcuate caudal margin, which is faintly flattened mesad, humeral sinus 

 subacute, deep, with the angle narrowly rounded. 



Tegmina surpassing the apices of the caudal femora by twice the 

 length of the pronotal disk; greatest width of the tegmen contained 

 two and one-half times in the greatest length of the same; form of 

 the tegmina elongate-elliptical, slightly prolonged proximad ; costal 

 margin as in amazonicnm, but the distal fourth is oblique arcuato- 

 truncate to the rounded rectangulate apex ; sutural margin as in ama- 

 .zonkum: marginal field broad, regularly and very considerably nar- 

 rowing distad, the greatest proximal width but little less than half 

 the greatest width of the tegmen; mediastine vein subobsolete, irreg- 

 ular, bifurcate; discoidal vein faintly flexuous, with rami toward the 

 costal margin somewhat irregular in position, furcation and trend: 

 median vein with the ramus diverging decidedly proximad of the 

 middle, this bifurcate shortly before its middle; ulnar vein at the 

 closest point separated from the humeral trunk by not more than one- 

 third the distance separating it from the sutural margin at the point 

 of greatest remoteness; cross-veins of the discoidal field much sug- 

 gesting those of C. amazonicum, but fewer (see figure) : stridulating 

 field relatively narrow, of medium length, the free margin rounded 



