12 llev. H. S. Gorliam's materials for a 



The narrow thorax and fasciate elytra give this species 

 a lyciform look. 



PoLLYCLASiS, Newman. 

 Pollyclasis hlfariiis, Say, Bost. Journ. i. p. 157. 

 The genus is very distinct from the last, and will, no 

 doubt, stand. I have not been able to make a detailed 

 examination of the type. 



America borealis, United States. Brit. M. 



^THRA, Cast. 



Abdomen lobed ; sixth segment produced triangularly in 

 middle. 



^thra marginata, Gray ; Griff. An. Kingdom. 

 Brazil, Gorh. ; Columbia, Brus. M. 



j^thra lateralis, Cast. Essai, p. 133. 



Brazil, Constancia, Gorh. ; Brus. M. : coll. Guerin, 

 Men., but ticketed "^marginata, Gray." There is no type 

 of M. Guerin's lateralis in this collection. 



j^tlira despecta, n. sp. 



Rufo-brunnea, subnitida, capite, antennis, tibiis, tarsis, 

 et abdomine nigris, thoracis disco, elytrisque margine 

 excepto interdum infuscatis. 



Long. lin. 4 — 4^. 



Head black, crown shining, antennae nearly as long as 

 the body ; joint 1 moderately stout, 2 short, 3 — 10 trian- 

 gular, their innerside acuminate subpectinate, 1 1 elongate, 

 and all compressed. Thorax short, almost semicircidar, 

 middle canaliculate, margins reflexed, and hind angles 

 acute. Elytra four times the length of thorax, ochreous- 

 red, in the majority of specimens a little infuscate, with 

 the entire margin paler. 



Nicaragua, Chontales ; Godman and Salvin. 



Columbia ; Brus. M. and Gorh. 



^thra concolor, n. sp. 



Parallela, flavo-testacea, capite nigro, thorace trans- 

 verso angulis posticis acutis, antennis corporis longitudinis, 

 serratis tibiis tarsisque nigro-fuscis. 



Lonsr. lin. 5. 



