CORRIGENDA AND ADDENDA 



No. I 



p. lo. Arcifcra Dyar will fall into the genus Pomcria B. & McD. 

 At the time the species was unknown to us and we placed it provision- 

 ally in Hypopta ; we have since received a 5 from San Benito, Texas, 

 and find on examination that it agrees exactly in venation and other 

 characters with itzalana, the type of the genus Pomcria. 



p. 2iZ- l'"e 28, for Prionxystus read Prionoxystus ; ior robinae 

 read robiniae. 



p. 33, line 32, for Prionxystus read Prionoxystus. 



Plates I and II. In our sketches of the venation we have re- 

 frained from drawing the 2nd anal vein forked at the base as is usually 

 seen. In the few species of which we had sufficient specimens to make 

 venation slides it proved a variable quantity. In some species it was 

 distinctly forked, e. g. Z. pyrina ; in others, e. g. C. bertholdi Grt., it was 

 not forked but traces of a 3rd anal vein could be seen at the base of 

 wing inclining towards inner margin, but not reaching same. Until 

 more material was forthcoming we concluded the safer course would 

 be to entirely omit the vein in our drawings as it had no particular 

 bearuig on the classification. 



No. II 



p. 9, lines 5 and 6, for gargdmcUc ah. 9 medusa read gargamcUc 

 ab. 9 medusa. 



p. 9, line 19, for TACHYPTERA read EUTACHYPTERA. . 



We are informed by Prof. T. D. A. Cockerell that the genus 

 Tachyptcra is preoccupied, having been created by Berge. We pro- 

 pose Eutachyptcra in its place. 



p. 16, line iS, for coronada ab. valcns read coronada ab. I'alcns. 



Plate II, fig. I, for 9 read <J . 



fig. 2, for forma read ab. 

 fig. 6. for forma read ab. 



Plate III, fig. 2, for $ read 9. 



Plate IV, fig. 4, for forma read ab. 



