280 



REPORT OF STATE GEOLOGIST. 



Inner face black with two narrow yellow crossbars. Hind tibiae pale 

 blue, sometimes dusky, with a whitish ring near the base, the spines 

 black except at extreme base. Lower side of body ydlow. 



Measurements: Length of body, male, 18 mm., 

 female, 25 mm.; of antennae, male, 11.5, female, 12 

 mm.; of pronotum, male, 4.5 m., female, 6 mm.; of 

 tegmina, male, 19 mm., female, 25 mm.; of hind 

 femora, male, 11.5 mm., female, 14 mm. 



This locust inhabits, as far as known, only the 

 southern third of the State, having been taken in 

 Crawford, Floyd, Lawrence and Jennings counties. 

 It frequents old, abandoned fields, roadsides and bare 

 places, especially those on high wooded slopes. On 

 the hills about Wyandotte Cave, and the Knobs back 

 of New Albany, it is especially common. The earli- 

 est date on which it has been taken was July 7, 

 when it was found in numbers, and had doubtless 

 been mature for some time. Both sexes fly actively 

 when flushed, the males making a low, whirring noise as they rise 

 from the ground. The general range of M. cinctum is given as "Up- 

 per Mississippi Valley and Colorado." Thomas has recorded it from 

 southern Illinois, and Garman from Bowling Green and Glasgow 

 Junction, Kentucky. 



Fig. 59. Mestobreg- 

 ma cinctum (Thos.). 

 Male. 

 (After Lugger). 



XXXIIL Trimerotropis Stal (1873). 



Body of medium size; compressed. Head slightly exceeding the 

 prozona in width, but always narrower than the metazona, which is 

 considerably expanded. Vertex longer than broad, the lateral carinas 

 distinct, gradually converging, and continuous with the sides of the 

 frontal costa; the median carina, if present, faint; the foveolae small, 

 but distinct and triangular. Frontal costa a little narrower just be- 

 low the ocellus and at the point of union with the vertex; in our 

 species with at least the lower two-thirds strongly sulcate. Antennae, 

 filiform. Pronotum with the disk nearly flat, either smooth or with 

 minute tubercles on the metazona; the front margin truncate, the 

 hind margin either acute, right or obtuse angled; the median carina, 

 low, especially on the metazona; cut by two notches, the hindmost of 

 which is much in advance of the middle; the lateral carinas, rounded, 

 indistinct. Lateral lobes of ])ronotum, with the front and hind mar- 

 gins nearly vertical, the lower margin with its front half directed 

 upward, the posterior half arcuate, the angle well rounded. Teg- 



