82 



THE CANADIAN ENTOMOLOGIST. 



time. Tliese two colours, therefore, might be merged under one, but tlie 

 effect is so different in some cases tiiat I believe it is better to keep them 

 separated until they are better understood. I have made a key to the 

 species and varieties which ought to make their classification fairly easy. 

 I shall be glad to have any criticisms or corrections on my work, as it is 

 impossible not to make errors on such a difficult group and one so little 

 understood at present. 



I wish to thank the following gentlemen for either lo;in of specimens 

 or help : Messrs. William Reiff, Barnes, Taylor, Broadwell, F. X. 

 Williams, Grossbeck, Doll, Croker, Pearsall, Henshaw, Prout, Marloff and 

 B istleberger, and it is owing to their generosity that I have been able to 

 accomplish this beginning. 



Short PALPI Group, 



I. Hyd. f 71 r cat a Thunh.. 



Syn. = (sl) e/uta/ a Hub. 

 Var. (A) quhiqiiefasciata Pack. 



" (B) viridata Pack. 

 " (C; sordidata Fab. 

 " (D) reseda Swelt. 

 " ( E ) pe7-iclata S w e 1 1 . 

 " (F) albifasciaia Pack. 



2. Hyd. reflata Grote. 



^Wi.^ abacta Hulst. 



3. Hyd. niibilofasciata Pack. 

 Var. (A) rapt at a Swett. 



(B) scalata Warren. 



(C) cupidata Swett. 



(D) cinnulata Swett. 

 " (E) vulnerata Swett. 



" (F) sparsi/nacu/a Hulst. 

 4 Hyd. niaiizaniia Ta) lor. 



5. Hyd. cock i seat a Swett. 



6. Hyd. pernotata \\\.\U\. 



7. Hyd. irata Swelt. 



t( 



(( 



•j Colour scheme cinereous. 



(a) fuscous, less irrorated, clear dis- 



cal space. 



(b) green, smoke bands. 



(c) yellowish-green. 



(d) reddish. 



(e) suffused. 



(f) white mesial band. 



■j Gray, wide black central band. 



Yellow, reddibh cast. 



(a) green, suffused. 



(b) red and green, green shaded. 



(c) red. 



(d) suffused, smoky. 



(e) white banded. 



(f) marks on costa only. 

 Gray, long fore wings. 

 Gray, white banded. 



Gray, red stained. Probably Hyd. 



magiioliata Gn. 

 Gray, red shaded. 



This includes all the species and varieties that should be placed in 

 the short-palpi grouj). The others I shall treat of in the moderate and 

 long pali)i groups. 



