Dec, 1919.] Shaeffer: Notes on Chrysomelid.e. 307 



From the foregoing key it is apparent that the new species here 

 described belongs in the vicinity of H. flavipcs and H. psilotes. 

 From the former, of which I have seen a male specimen, it is easily 

 distinguished by the characters given in the key. I have not seen 

 the Mexican H. psilotes; to judge from the description, it comes very 

 close to H. bradleyi. No mention is made by Osten-Sacken of the 

 pollinose bands of thorax and abdomen which are so striking a fea- 

 ture of H. bradleyi; yet, it is not impossible that the unique specimen 

 of H. psilotes was poorly preserved and rubbed, so that the two spe- 

 cies may be more similar than would seem from the descriptions. 



SYNONYMICAL AND OTHER NOTES ON SOME 



SPECIES OF THE FAMILY CHRYSOMELID^ 



AND DESCRIPTIONS OF NEW SPECIES. 



By Chas. Shaeffer, 

 Brooklyn", X. Y. 



The extent of variation of some species of the family Chrysome- 

 lidae as given in the latest revisions, etc., was never satisfactory to me. 

 Rearranging the material in some overcrowded boxes lately and study- 

 ing the species of some genera more critically I became fully con- 

 vinced that my surmise was correct and that some of the names placed 

 in synonymy or given as varieties at present have to be restored to 

 specific standing. However, I could do this in a very few instances 

 only, as the original descriptions are too poor and I could not see the 

 Leconte types at present. I will undertake a revision of at least two 

 of the genera, Donacia and Disonycha, in the near future. 



Donacia s. g. Poecilocera new subgenus. 



Our species of Donacia are divisible into the two recognized sub- 

 genera. Those of Mr. Leng's groups A, B, and C belong to Donacia 

 proper and those of group D to the subgenus Plateumaris Thorns. 

 These of the latter subgenus are more similar in form than those of 

 the subgenus Donacia and all possess a very good character in the dis- 

 tinct sinuation of the sutural margin of elytra near apex to separate 



