402 PROCEEDINGS OF THE ACADEMY OF [June, 



a great range of types being exhibited by the material studied. None 

 of the specimens exhiljit the median carina of the fastigium described 

 by Bruner. 



Subfamily (EDIPODIN^. 

 LACTISTA Saussure. 

 Lactista punctata (St§,l). 



Monte Redondo, Costa Rica. Janiiar}^, 1903. (C. F. Underwood.) 

 [A. N. S. Phila.] One male, one female. 



These specimens have the median carina of the pronotum lower than 

 in specimens from the States of Tamaulipas and Vera Cruz, Mexico, 

 and the bluish tint of the caudal tibiae is weaker and more fuscous in 

 character. 



A specimen from San Marcos, Nicaragua (C. F. Baker), agrees with 

 the Costa Rican individuals in the points of difference from the Mexican 

 type. The differences are, however, so slight that they appear un- 

 worthy of specific recognition. 



HELIASTTJS Saussure. 

 Heliastus costarioensis n. sp. 



Type; 9 ; Turrialba, Costa Rica. (Schild and Burgdorf.) [U. S. 

 Nat. Mus., No. 8,173.] 



Closely allied to H. aztecus Saussure from northern Mexico, but differ- 

 ing in the narrower and deeper fastigium, the deeper sulcation of the 

 frontal costa, the more prominent eyes and the less sellate pronotiun. 



Size medium (about equal to that of H. sumickrasti) ; form moder- 

 ately robust. Head very slightly elevated above the level of the pro- 

 notum, occiput moderately ascending; fastigium distinctly declivent 

 and passing without any angle into the frontal costa; interocular 

 region about twice as wide as the frontal costa; vertex and fastigium 

 slightly excavated with a very slight median and distinct lateral carinae; 

 fastigium gradually narrowing to the frontal costa, which is broadly 

 and distinctly sulcate with prominent carinae, becoming obsolete a 

 short distance ventrad of the median ocellus ; antennae distinctly ex- 

 ceeding the head and pronotum in length. Pronotum very slightly 

 sellate, the dorsal outline but slightly depressed at the transverse sulci, 

 all three of Avhich are distinct and well marked; cephalic margin 

 slightly arcuate, caudal margin obtuse-angulate with the angle some- 

 what rounded; median carina very slight cephalad, obsolete between 

 the sulci, slight but distinct on the metazona, humeral angle very dis- 

 tinct on the metazona but rounded; surface of the metazona rugoso- 

 punctate; lateral lobes deeper than long, sulci very distinct, the ventro- 



