194 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



into a slightly decurved as well as incurved, triangular, elongated, 

 apically acuminate lamina, reaching beyond the apex of the supraana! 

 plate; subgenital plate rather small, forming a quadrangular scoop, 

 •broad at base, narrowing apically, with the apical margin suddenly 

 and greatly elevated above the lateral margins, broadly convex above 

 and apically externally sulcate. 



Length ofbody, d^, i9-5 mm., ?, 20 mm.; antennae, d^?, 7.5 mm.; 

 tegmina, d^, 12.5 mm., 9, 14.5 mm.; hind femora, d, 11 mm., 9, 

 I 2 mm. 



I d, I ?. Mouth of Big South River, Larimer Co., 8000', August 

 3; and foothills five miles west of Fort Collins, Larimer Co., Color- 

 ado, July 10, C. F. Baker. 



Texanus Series. 



A considerable number of species are to be added to this series, all 

 collected on the Pacific coast by Mr. A. P. Morse. Moreover, I for- 

 merly placed M. marginatus in the Plebejus Series instead of here, 

 where it belongs, and to include it also it is necessary entirely to 

 remodel the table formerly given to separate the species. As, more- 

 over, M. marginatus is dimorphic, and one form is macropterous, it is 

 necessary to find a place in the general table of the macropterous spe- 

 cies for the Texanus Series, not heretofore represented. This is done 

 by altering the table given in my Revision (pp. 136-137), so far as the 

 Fackardii, Texanus and Plebejus Series are concerned, in the following 

 manner; 



table to separate the macropterous species of the packardii, 

 texanus, and plebejus series of melanoplus. 



a'. Apical portion of supraanal plate of male suddenly depressed just be- 

 yond the middle ; cerci broad or moderately broad, not much narrowed in 

 the middle, more or less suddenly bent inward near tij), exteriorly sulcate 



at apex (Packardii Series.)* 



d^. Supraanal plate of male on the same general plane throughout ; cerci 

 slender and much narrowed in the middle, gradually incurved, exteriorly 

 tumid at apex. 



/;!. Subgenital plate of male short and broad, as liroad as long, as seen 



from above apically ans^ulate and tuberculate. 



(Texanus Series) i/iarginatus Scudd. 



♦The separation of the species ot this series is given elsewhere in the present paper. 



