I<S2 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



ous beneath; hind tibiae red, the spines black, 9-1 1, usually 10, in 

 number in the outer series. Extremity of male abdomen a little 

 clavate, a little recurved, the supraanal plate triangular, somewhat 

 acutangulate, nearly plane, with a rather slender, percurrent, median 

 sulcus, deep in basal, shallow and inconspicuous in apical half, bounded 

 in basal half by moderately heavy ridges; furcula consisting of a pair 

 of slender, acuminate, parallel fingers, extending over the supraanal 

 plate by less than the length of the last dorsal segment ; cerci slender, 

 not nearly so long as the supraanal plate, gently and slightly incurved, 

 at base no broader than the first antennal joint, tapering to about half 

 the width, the apical half equal, the tip bluntly rounded; subgenital 

 plate small, broad at base but tapering a little, and at apex narrower 

 than long, the apex feebly pyramidal and produced to a distinct though 

 rather slight tubercle. 



Length of body, cf, 18.5 mm., ?, 25 mm.; antennae, cT, 8.5 mm., 

 ?,8.5? mm.; tegnn'na, ^',6 mm., ?, 7.5 mm.; hind femora, ^' , 10 

 mm., 9, 1 1.5 mm. 



4 rf , 2 ? . Foothills five miles west of Fort Collins, July 10, and 

 mountains of Larimer Co., Colorado, July 11, C. F. Baker. 



This species is very closely allied to, if it be distinct from, M. hurotti 

 Blatchl., but appears to differ from it in its smaller size, considerably 

 shorter tegmina, slightly slenderer cerci and less pronounced tubercle 

 of the subgenital plate; the punctuation and the median carina of the 

 nietazona are also less pronounced. 



Mela7ioplus liuroni. 



Melanoplus huroni \i\<\\.c\\\.\ Psyclu-, V'lIL 195 iq6 ( 1898). 

 Described by Blatchley from La Salle Island, Michigan. I here 

 merely indicate its place in the series. 



Inornatus Series. 



To this series can be added one more species, sent me from Arizona 

 by Dr. J. L. Hancock, though it differs con.siderably from the other 

 members of the series. To accommodate it, the table of the species 

 (Revision, p. 128) may be altered thus: 



TABLE OF THE SPECIES IN THE INORNATUS SERIES OF MELANOPLUS. 



a^. Male cerci broadly or rather broadly expanded apicallv ; apical tuber- 

 cle of subgenital plate blunt. 



