144 GEO. 11. HORX, M. D. 



Additional Notes. 



While going over the Ulivierian s^pecies my attention was directed 

 to the species described by Say under the name Colaspis as follows : 

 C. pretexta Say, is Rhabdopterus picipes Oliv. 

 C ovata iSay, is Chrysodina globnsa Oliv. 

 C. convexa Say, is a Nodonota and has been placed as a synonym 



of N. tristis Oliv., but iueorreetly. 

 C. striata Say, is Paria aterrima Oliv. 



C. puncticollis Say, is a Nodouota, and has since been described as 

 N. strigicollis Lefev. ; it may be known by having the sides of 

 the elytra obtusely subcarinate behind the humeral umbone ; 

 the legs are usually pale, but vary to piceous. 

 C. decemnotata Say, is a Xanthonia. 

 C. sexnotata Say and 

 C. quadrinotata Say, are varieties of the same, and identical with 



Paria canella Fah. 

 C. pallida Say, is a Metachroma. 



C. dubiosa Say, was placed by Crotch in Metachroma, which, as con- 

 stituted by him, is apparently composite, and the species should 

 be separated. 

 C. favosa Say, is a true Colaspis. 

 C. denticollis Say, is a Myochrous. 

 C. interrupta Say, has been placed in Metachroma. 



Lefevre has described a Typophorus histrio from our fauna, which 

 seems identical with Say's species. I have not yet had the time to 

 study closely the genera of Eumolpidae as given by Lefevre (Mem. 

 Liege xi), but it is possible that 3L califormca, dahiosa, usta and in- 

 terrupta should go to Typophorus. 



At present is a favorable opportunity for directing attention to the 

 collection of the species or forms associated in our present lists under 

 the name Colaspis tristw or Nodonota, as it should be called. In the 

 series at present before me at least five forms are clearly separable in 

 those occurring in the Atlantic region, while at least two occur in 

 Arizona. In all the species before me I have observed that the sixth 

 joint of the antennae is distinctly shorter than either the fifth or 

 seventh. 



In collecting Nodonota the plant on which they occur should be 

 noted, and as large series from remote regions will be necessary for 

 the proper elucidation of the species I have refrained from greater 

 expression of opinion. 



