13*3.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 489 



tlie stalks, which turned black next day, and the twig afterward with- 

 ered. The series of arcuata showed in the male a considerable, though 

 gradual, variation in size, the ventral character remaining identical. 

 The depression on the last segment is oval, shaped, the upper end 

 encroach iu g on the penultimate segment, the crest of the ridge distinct 

 and overhanging. Smaller specimens had the character most intensi- 

 fied. Four distinct forms were separable, fairly defined, yet with in- 

 termediate forms. 



(1) A large, darker, robust, heavily punctured form, with discolored 

 ventricose abdomen, and very firm elytra. 



(2) The ordinary smooth form, varying in color, and often fully as 

 dark as the preceding. Elytra softer, abdomen paler, form less ven- 

 tricose in both sexes. 



(3) A robust brown form, considerably smaller than the preceding, 

 but proportionately broader. The punctuation is distinct. 



(4) A still smaller, parallel form, which I thought at first might be 

 different. It varies from castaneous to piceous, and the clytral punctu- 

 ation tends to become rugulose ; iu one specimen it is so. 



May 8. — At Lanier Heights. A chilly night ; but few specimens 

 flying. L. arcuata, 65 5 , 19 9 ; L. hirticula, 6 5 , 9 ; L. affinis, 1 9 . 



There was nothing in arcuata not previously noted. Two only of the 

 forms taken yesterday were distinguishable in this lot in both sexes. 

 The small specimens still uniformly have the ventral characters best 

 marked. 



May 9. — At Lanier Heights. Somewhat sultry, but a chilly, moist 

 wind. Insects abundant early iu the evening; at 9.30 very few were 

 found on the trees and hedges. There was no reserve to take the place 

 of tho.^e captured my me. L. arcuata, 156 5 , 68 9 ; L. hirticula, 18 5 r 

 28 9 ; L. inversa, 15,19; L. affinis, 15,19. 



May 10. — At Lanier Heights. A cloudy, chilly evening. Mr. C. II. 

 Roberts with me. L. arcuata, 176 5 , 190 9 ; L. hirticula, 19 5 , 46 9 ; 

 L. affinis, 7 5 , 2 9 ; L. micans, 2 9 . 



May 11.— Lanier Heights. Mr. Roberts and myself took : L. arcuata, 

 30 5 , 26 9 ; L. hirticula, 5 5 ,3 9 , L. micans, 2 5,29; L. inversa, 1 5 7 

 1 9 ; L affinis, 15. 



On this date I received also the first specimen of L. crenulata, said to 

 have been very numerous and destructive to Roses, a few miles from 

 Washington. 



May 12.— At Lanier Heights with Mr. Roberts. L. arcuata, 77 5, 

 106 9 ; L. ilicis, 1 5 ; L. micans, 1 5 ; L. inversa, 2 5,19; L. hirticula, 

 3 5 , 7 9 ; L. affinis, 3 5,19. 



The evening was dull, close, and yet cold, and the collections were 

 chiefly on pear. 



May 13— At Lanier Heights, with Mr. Roberts. Evening chilly, with 

 quite heavy rains later. Very little flying. L. arcuata, 9 5,3 9 ; L. 

 hirticula, 2 5.3 9 ; L. inversa, 1 9 . 



