xo. 1088. STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 401 



have no relationsliip to the PachyrhynchincE, which also have the 

 anterior coxge separated, and at the same time need to be separated 

 from the Tanyniecini proper. The genus Anypotactus is very similar 

 to Polydacrys, differing only by having the anterior cox-jd contiguous. 

 It must be placed in the Psallidiinae. 



Table of genera of J'andelelelni. 



I. Tarsal claws free. 



1. Humeral angles absent; apterous forms; anterior tibiae denticulale: nasal plate 



very small Isodacrys Sharp . 



2. Humeral angles present. 



a.^ Nasal plate large and distincily outlined: ocular Aibrisste lacking. 



Polydacrys Schonherr. 

 a.' Nasal plate small or lacking; ocular vibrissa? present. 



Pandeleteius Schonherr. 



II. Tarsal claws connate; humeral angles present; nasal plate obsolete; ocular vibris- 



sse rejiresented by two or three setae Isodrusus Sharp. 



The first three genera are exceedingly closely allied, and yet 

 Champion has described still another and suggested a new genus 

 for one of our species. We can with mental reservations accept the 

 four genera tabulated above, for the present, and may in the future 

 find it advisable to permanently retain them, because of a multipH- 

 city of forms. 



Genus ISODACRYS Sharp (1911). 



Isodacrys Sharp, Biol. Centr.-Amer,, Coleop., vol. 4, 1911, pt. 3, p. 175. 



The type of this genus is hereby designated as guatemalensis Sharp. 



ISODACRYS OVIPENNIS Schaefier. 



Pandeleteius ovipennis Schaeffer. 



The nasal plate is very small and triangular. This species was 

 taken at Victoria, Texas, November 25, 1907, by J. D. Mitchell and 

 C. R. Jones. 



Genus POLYDACRYS Schonherr (18c34). 



Polydacrys Schonherr, Gen. et Sp. Cure, vol. 2, 1834, p. 130. 



The originally designated t^q^e is niodestus (Dejean) Gyllenlial. 



POLYDACRYS DEPRESSIFRONS Boheman 

 Pandeleteius caviroslris Schaeffer. 

 This synonymy is accordmg to Champion.^ 



The nasal plate is very large, the raised margm beginning at the 

 lateral corners of the beak and forming a broad ogival area which is 

 depressed, shining glabrous; the anterior margin is concave ^^^[th an 

 abruptly deep median concave emargination. This species was 

 taken at Victoria, Texas, April 22, 1907, on Cratsegus, April 23 and 

 June 19, 1907 (Mitchell). 



I Biol. Centr.-Amer., Coleop., vol. 4, pt. 3, p. 217, May, 1911. 

 S0459°— Proc.N.M.vol.45— 18 26 



