NO. 1988. STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 423 



Genus PANORMUS Casey (1888). 

 Panormus Casey, Ann. New York Acad. Sci., vol. 4, 1888, p. 269. 

 The monotype of the genus is setosus Casey. 



Genus TRACHYPHLCEUS Germar (1817). 

 Trachyphlceus Germar, Mag. der Ent., vol. 2, 1817, pp. 339-341. 

 The monotype of the genus is scahriculus Linnaeus. 



SIMOINI, new tribe. 



Table of genera of Simoini. 



I. Side pieces of mesostemum very unequal, the epistemum larger and attaining the 

 elytral margin, epimeron usually small, sometimes very small. 



1. First abdominal suture straight or extremely nearly so Group Paraptochi. 



a^. Scrobes lateral Paraptochus Seidlitz. 



a^. Scrobes superior. 



¥. Antennal scape not attaining the prothorax; eyes small; second ventral seg- 

 ment shorter than the two following together Stenoptochus Casey. 



b^. Antennal scape long and slender, passing distinctly beyond the anterior 

 margin of the prothorax; eyes large; second segment as long as the two 

 following together Orthoptochus Casey. 



2. First abdominal suture arcuate Group Periteli. 



a^. Cotyloid surface of the hind tibiae glabrous; eyes with or without orbital 



groove. 



b^. Integuments sparsely pubescent Omias Germar. 



b^. Integuments squamose. 

 c^ Scrobes superior and convergent above. 

 d^. Beak narrowed to tip. 

 e^. Beak longer than head; scrobes very short, terminal. 



Thricolepis Horn. 

 e^. Beak shorter than head; scrobes attaining the eyes. 



Peritelopsis Horn. 

 d^. Beak dilated at apex, short; scrobes very feebly convergent, short, not 

 attaining the eyes; second ventral segment as long as the third and 

 fourth. 



/'. Posterior tibise with two short fixed spurs Peritelodes Casey. 



p. Posterior tibiae without fixed spurs Peritelinus Casey. 



c^. Scrobes more lateral, not convergent above, 

 gri. Scape about as long as the funicle. 



h^. Scrobes not attaining the eyes Geoderces Horn. 



h^. Scrobes attaining and partially enveloping the eyes. 



Geodercodes Casey. 



g"^. Scape much shorter than the funicle Aragnomus Horn. 



a^. Cotyloid surface of the hind tibise squamose. 

 i^. Scrobes superior, slightly convergent above. Eyes indistinctly surrounded 



by a groove. Scape feebly arcuate Dysticheus Horn. 



i"^. Scrobes lateral, not at all convergent. Orbital groove deep. 

 j^. Scape arcuate and slightly twisted; scrobes lateral, deep and attaining the 



eyes Eucyllus Horn. 



j^. Scape straight or very feebly arcuate. 



B. Scrobes very shallow, posteriorly, not attaining the eyes. 



Thinoxenus Horn. 

 F. Scrobes deep, attaining the eyes Rhypodillus Cockerell . 



