74 ENTOMOLOGICAL NEWS. [Feb., 'lO 



sunflower Helianthus occidentalis and the goldenrod Solidago 

 graminifolia, but the great majority were paying their atten- 

 tions to the flowers of Rudbeckia which were present in large 

 numbers in that particular locality. 



The four specimens of Nemognatha mcmorensis referred to 

 above do not differ at all in size, they have a body length of 

 8 mm. and a tongue length of 3.5 mm., and they too were visit- 

 ing the flowers of Rudbeckia hirta. 



Both of these species of Nemognatha are, so far as the 

 length of their mouthparts is concerned, very nicely adapted to 

 the tubal florets of Rudbeckia, as also of some other composite 

 flowers of similar structure and dimensions. 



Of the 14 species represented in the collection of the Public 

 Museum of Milwaukee, two have been dealt with already, and 

 I herewith present the figures for the tongue length of the 

 remaining twelve species : 



N. cribricollis Lee 1.5 mm. 



N. sparsa Lee 2.5 mm. 



N. immaculata Say 2.5 mm. 



N. scutellaris Lee 3.0 mm. 



N. nigripennis Lee 4.0 mm. 



N. apicalis Lee 4.0 mm. 



N. piezata Fab 6.0 mm. 



N. cribraria Lee 7.0 mm. 



N. dichroa Lee 8.0 mm. 



N. lutea Lee 8.0 mm. 



N. lurida Lee 8.0 mm. 



N. bicolor Lee 10.0 mm. 



These figures show a gradual increase from the short- 

 tongued cribricollis to the long-tongued bicolor, and the tongue 

 length in the latter falls only 2 mm. short of that of the Bra- 

 zilian species, which, according to Hermann Mueller, was ob- 

 taining nectar from the flowers of a morning-glory. Among 

 other beetles observed by W. D. Pierce (loc. cit., p. 24) on the 

 flowers of a goldenrod, Solidago rigida, at Lincoln and West 

 Point, Nebraska, are Nemognatha immaculata and N. sparsa. 

 Prof. T. D. A. Cockerell (Flower and Insect Records 

 from New Mexico, ENT. NEWS, Feb., 1901, p. 40) has seen 

 Nemognatha bicolor, a long-tongued species, at the flowers of 

 Cleome serrulata Pursh. at Las Vegas, New Mexico. 



These are the only records of the visits of North American 

 beetles of this genus that I have been able to come across in 



