36 CATALOGUE OF 



Group 2. 



Proboscis hrevis. Palpi brevissimi ; articulus 3us minimus. 

 Antennae graciles, simplices, corporis dimidio longiores. Abdomen 

 alas posticas paullo su]ierans. Pedes validi, pilosi ; tibisB posticae 

 calcaribus quatuor parvis. Alae mediocriter latae ; antiese apud cos- 

 tarn rectae, apice roiundatae, margine exteriore sat obliquo. 



Proboscis short. Palpi very short : third joint very small. 

 Antennae slender, simple, more than half the length of the body. 

 Abdomen extending a little beyond the hind wings. Legs stout, 

 pilose ; hind tibiae with four short spurs. Wings moderately broad. 

 Fore wings straight in front, rounded at the tips, rather oblique 

 along the exterior border. 



5. DiPHTERA JOCOSA. 



Pallide cermna ; thorax fasciis albo-nigris ; abdomen vitta nigra 

 alhido maculata; ala anticce fasciis angulatis maculisque 

 nonnullis albo-nigris ; posficce nigricantes, ciliis albidis. 



Far. j8. Thorax cerinno-albidus ; alcB anticce albidce, punctis 

 fasciisque duabus latis (la diffusa) nigris. 



Diphtera jocosa, Guen. Noct. \. 37, 40. 



a, b. New York, North America. Presented by E. Doubleday, 

 Esq. 



Group ? 



6. Diphtera deridens. 

 Mas. Cinereo-albida ; palpi breves^ extus fusci, apice albi ; an- 

 tennce breves, pectinatoe ; thorax cinereo nigroque varius; alee 

 anticce Jlavo tincta, lineis Jlexuosis lunulisque marginalibus 

 nigricantibus. ocelli discalis ptipilla fusca ; posticcs apud mar- 

 gines albidcr, lunulis nigricantibus. 



Diphtera deridens, Guen. Noct. i. 35, 37. 

 North America. 



