382 FAMILY VI. ACRIDIDJE. THE LOCUSTS. 



and longer than the cheek below them. Pronotum with disk flat and sides 

 nearly parallel, male, rounded and distinctly divergent behind, female; 

 prozona one-half longer than metazona, the latter densely and finely ru- 

 gose-punctate. Tegmina elongate-oval or obovate, twice as long as broad, 

 their tips subtruncate. Extremity of male abdomen feebly swollen, but 

 little upcurved. Supra-anal plate short, broadly triangular, apex subacute, 

 side margins feebly elevated to form a large shallow concavity each side 

 of the rather wide, tapering median basal sulcus which reaches only mid- 

 dle of plate. Furcula consisting of a pair of very short, divergent, oblong 

 processes lying on the bases of the median ridges (Fig. 133, o. b.) Cerci 

 as described in key, feebly incurved, shorter than supra-anal plate, their 

 tips blunt. Subgenital plate small, subconical, the apex ending in a slight 

 erect tubercle. Length of body, $, 10 1C, 9, 16 21; of antennae, $, 

 5.5 G, 9, 6.57; of pronotum, $, 34, 9, 4.25; of tegmina, $, 2.23, 

 9 , 2.53.5; of hind femora, $ , 7.58.5, 9 , 911.5 mm. 



Miami, Ft. Myers, Sarasota aud Dunedin, Fla., Dec. April 

 (W. AS. B.}. This, the smallest known species of the genus, is 

 known only from the mainland of the southern two-thirds of Flor- 

 ida. Scudder's types were from Ft. Keed and it has been recorded 

 from numerous localities south of that place. The species varies 

 much in size and color, some males at hand from Sarasota being 

 but 10 mm. in length, while R. & H. record a series from Miami 

 (1912) ranging from 18.5 17 and females 19 22.5 mm. in length. 

 About Dunedin /HKT is the only short-winged Mclanoplus so far 

 taken and occurs sparingly in both nymph and adult stages 

 throughout the winter, mating from mid-January to April. It is 

 found for the most part in small colonies in the wire-grass about 

 moist places and along pathways in open pine woods, while in 

 early spring it is often taken by sweeping huckleberry and other 

 low shrubs. The males are rather slow to flush but very active 

 after being once frightened. The living females are often a hand- 

 some purplish-gray in general hue and are much more sluggish in 

 their movements. Several of the Dunedin males have the black 

 postocular stripe very shining, extending back the full length of 

 pronotum and half or more the length of abdomen. 



172. MELANOPLUS ROTUNDIPENNIS (Scudder), 1877a, 86. Round-winged 



Locust. 



Size small for the genus, medium for the group. Color much as in 

 puer, the black postocular stripe extending back nearly to middle of abdo- 

 men, male, only to metazona, female; meso- and metapleura black, the lat- 

 ter with crest yellow. Upper and inner faces of hind femora usually 

 bifasciate with fuscous, the bars sometimes lacking in female; hind tibiae 

 dull glaucous, tinged with yellow near base and apex. Vertex and fastig- 

 ium much as in puer, the latter more shallowly silicate in female; frontal 

 costa more deeply sulcate below the ocellus. Disk of pronotum feebly con- 

 vex and rounded into lateral lobes in both sexes, otherwise as in puer. 



