118 



PSYCHE. 



had studied this character in all the 

 species and varieties of Deltocephahts, 

 most of the errors in reference he has 

 made would have been avoided. 



Abdomitialis is common in Colorado. 

 Minki I have from New Bedford, Mass. 

 (Hough). The record for mhtki by 

 Provancher was undoubtedly correctly 

 given and should not be referred to 

 debilis in the bibliography. 

 Deltocephahis affinis G. & B. 



1590 Van Duzee, Psyche, V. p. 390 

 (melsheimeri). 



1591 Osborn, la. Ag. Exp. Sta. 

 Bull. 13. p. 100 (debilis). 



1892 Osborn, Rept. la. Ag. Soc. 

 for 1S92, p. 6SS (debilis). 



1592 Osborn, Papers on Iowa Insects, 

 p. 56 (debilis). 



1892 Osborn, Proc. la. Acad. Sci. I. 

 pt. 3, p. 13 (debilis). 



1593 Harrington, Ottawa Naturalist, 

 VI. p. 32 (melsheimeri). 



1593 Osborn, Bull. 30 Div. Ent. 

 p. 45 (debilis). 



1594 Van Duzee, Trans. Am. Ent. 

 Soc. XXI. p. 293 (melsheimeri). 



1595 Gillette & Baker, Prelim. List. 

 Hem. Colo. p. 84 & 88 (affinis and 

 melsheimeri). 



1897 Osborn cSc Ball, la. Ag. Exp. 

 .Sta. Bull. 34. p. 627 (melsheimeri) . 



1897 Osborn & Ball, Proc. la. Acad. 

 Sci. IV. p. 211 (melsheimeri). 



This, one of the commonest species 

 of the genus, has been tossed about 

 from " pillar to post" for some time. 

 In the "Prelim. List Hemip. Colo." 

 specimens given the name ?iielsket}iier/ 

 by Vafl Duzee were so left. One form 



recognized as certainly not the melshei- 

 meri of Fitch was named affinis. This 

 species as seen above, has been repeat- 

 edly erroneously referred to melsheimeri 

 by both Van Duzee and Osborn. The 

 original description might apply equally 

 well to affinis and to the true melshei- 

 fneri, except as to length. Fitch de- 

 scribes melsheimeri as 2.^ mm., while 

 affinis will average 3.5. The matter 

 could only be definitely settled by an 

 examination of the original Fitch t^'pe in 

 the Nat'l Museum, and this, now before 

 me, shows the true melsheimeri to be an 

 entirely diflerent thing. 

 Deltocephahis melsheimeri Fh. 



1S51 Fitch, Homop. X. Y. State 

 Cab. p. 61 ; reprint in Lintner's 

 9th Rep. p. 401. (melsheimeri). 



1S97 Osborn & Ball, la. Ag. Exp. 

 Sta. Bull. 34. p. 637 (minimus). 



1897 Osborn & Ball, Proc. la. Acad. 

 Sci. I\'. p. 211 (minimus). 



Not knowing the true melsheimeri 

 Osborn has redescribed it as ?ninitmis. 

 Still, a good description of the genuine 

 f)ielsheimeri was much needed. 



It seems to be a quite generally distrib- 

 uted species in northern U. S. east of 

 the Rockies. 

 Deltocephahis iinicoloratus G. & B. 



1S95 Gillette & Baker, Prelim. List 

 Hemip. Colo. p. 89 (unicoloratus). 



1897 Osborn & Ball, la. Ag. Exp. 

 Sta. Bull. 34. p. 636 (oculatus). 



1897 Osborn & Ball, Proc. la. Acad. 

 Sci. IV. p. 212 (oculatus). 



I ha\e the type of this species before 

 me. It is not especially near to monti- 

 cola as suggested by Osborn. There is 



