BUFFALO SOCIETY OF NATURAL SCIENCES IO9 



LopJiopelta was described as a subgenus of Platycotis and 

 generally is so listed but it has the same standing as such 

 genera as Telamona, Heliria and Glossonotus and I prefer to 

 list it as a genus in a faunal work such as this. Of Genus Um- 

 bonia two species have been accredited to Florida and the 

 southern states, but I have seen only Mexican material of 

 either. 



Genus Platycotis Stal. 



This genus has been a puzzle to me and I am still unable 

 to satisfy myself in regard to the specific limitations necessary 

 to be used here. Two so-called species are commonly met with 

 from Maryland to Florida and west to California and Vancouver 

 Island. Each of these is found in two forms in both sexes: 

 with and without the porrect horn. In the females the prono- 

 tum is longer and more slender posteriorly and the humeri are 

 more acute. These species are: 



Platycotis sagittata Germar. 



Germar described from Brazil the form with a porrect horn 

 while Say described his bclligcra without the horn, from the 

 eastern United States. In the males of both forms the cro- 

 ceous points form two longitudinal vittae on either side. From 

 the descriptions and figures of vittata Fabr. I can see no rea- 

 son why it also should not be referred to the unarmed form of 

 this species. P. nigro-maculata of Provancher (not nigro- 

 lincata as written by Goding) is another synonym of the un- 

 armed form, while Walker's Aconophora viridescens and gut- 

 tifera are redescriptions of the form with a horn. I have 

 examples of this species from North Carolina and California 

 and in the Cornell University collection are others from Ari- 

 zona and Florida. 



Platycotis quadrivittata Say. 



The horned form of this species has been redescribed as 

 Hoplophora /f-lineata by Germar and as AconopJwra porrccta by 

 Walker, while the unarmed form was redescribed as HoplopJiora 

 line at a by Fairmaire. 



Two additional species of Platycotis from California have 



been described by Dr. Goding in volume three of Entomolog- 



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