NO. I BLACK FLIES OF GUATEMALA — DALMAT 395 



Phylum Annelida 



Class HiRUDINEA 



Order Gnathobdellae 

 Family Hirudidae 



Diestecoma Vaillant 

 probably Diestecoma magna Moore 

 Phylum Artheopoda 

 Class Crustacea 

 Order Decapoda 



Family Potomonidae 



Pseudothelphusa similis Rathbun 

 Class Insecta 



Order Orthoptera 

 Family Blattidae 

 Epilampra sp. 

 Order Megaloptera 

 Family Sialidae 

 Corydalus sp.° 

 Order Ephemeroptera 

 Family Baetidae 



Genus and species ? 

 Family Heptageniidae 

 Genus and species ? 

 Order Odonata 



Family Aeschnidae 



Ophiogomphus sp. or Erpetogomphus sp. 

 Epiaeschna sp. (near) 

 Family Libellulidae 

 Libellula sp.° 

 Sympetriim sp. (or near) 

 Family Agrionidae 

 Hetaerina sp." 

 Agrion sp. 

 Family Coenagrionidae 

 Genus and species ? 

 Order Plecoptera 

 Family Perlidae 



Neoperla sp. (or near) 

 Order Hemiptera 



Family Belostomatidae 

 Abedus ovatus Stal " 

 Letherocerus delpontei De Carlo 

 Family Naucoridae 



Cryphocricus macrocephaliis Mont. 



min Schwartz, of the U. S. Department of Agriculture ; the amphibians and rep- 

 tiles by L. C. Stuart, Institute of Human Biology, University of Michigan ; the 

 birds by Ernst Mayr, of the American Museum of Natural History. I wish to 

 express my deep appreciation to these experts who have made the faunistic 

 study possible. 

 " Predaceous on black-fly larvae or adults. 



