NO. 1124. nEvrsioy OF Tin: MELAXOPLi-scrDDEii. 373 



broad (male) or slightly broader than Ion*? (feinalo). Tefrmina anri)as8- 

 iiig considerably the hind femora, gently and feebly tapering fioin tlie 

 siibbasal expansion to the well-rounded tij), fusco-testaeeous with an 

 olivaceous tinge, distantly and uniformly Hecked with usually roundish 

 or subquadrate dark fuscous spots, less abundant in the apit-al third, 

 but not contined at all to the discoidal area: win<;s smok}' i)ellucid, 

 beeoming feebly infuseated apicall}", the veins and cross-veirs mostly 

 blackish fuscous. Fore and middle femora luteo-ferruginon,-, tiecked 

 with dark olivaceous or fuscous; hind femora varying from sordid 

 luteo-fuscous to dull i)ale olivaceous, rather narrowly and completely 

 bifasciate with bljick, forming unusually regular transverse ban<ls, the 

 whole apex blackish fuscous or black; hind tibiae plumbeo-fuscous at 

 extreme base, followed by a very narrow black annulus and this by a 

 broader pale annulus, beyond which the tibiae are dull red, obscured 

 above, excepting at apex, and sometimes on the sides for a similar and 

 beneath for a brief distance, with fuscous, often broken into Hecks, 

 the whole pilose above; spines black nearly or quite to their base, 

 ten to twelve in number in the oxt er series. Extremity of male abdo- 

 men feebly clavate, m.uch upturned, the sui)raanal plate broad, triangu- 

 lar, with nearly straight lateral margins, acutangulate tip (too nearly 

 rectangulate in our figure), with a broad and rather shallow median 

 sulcus, interrupted beyond the middle, and in the basal half bounded 

 by raoderatelj' high walls; furcula composed of a pair of slight trian- 

 gular projections at the inner angles of the divided last dorsal segment, 

 overlying the ridges of the supraanal plate ; cerci large, subequal on the 

 basal two-fifths or more, then abruptly expanding into a transverse 

 apical flap, twice as broad as the base, the expansion almost wholly on 

 the upper side and at right angles to the basal portion, the apical 

 margin broadly convex, but below emarginate to form a denticulation 

 of the lower posterior angle of the flap, the whole gently incurved 

 and surpassing the supraanal plate ; infracercal plates wholly concealed 

 beneath the supraanal plate; subgenital plate moderately broad, very 

 greatly extended and abruptly elevated at the extreme apex. 



Length of body, male, 30 mm., female, 44 rnm.; antennae, male, IS 

 mm., female, 16.5 mm.; legmina, male, 26 mm., female, 31 mm.; hind 

 femora, male, 16 mm., female, 21 mm. 



Six males, 2 females. Dallas, Texas, Boll (U.S.N.M. — Riley collec- 

 tion ; S. H. Scudder) ; Gulf coast of Texas, Aaron ; Arizona, Schaupp 

 (L. Bruner). 



This species is certainly very closely allied to M. 2)unctuIaiuSy which 

 not only occurs with it, but over a much wider extent of country: itis 

 a much larger insect and differs in several points in the abdominal 

 appendages of the male, thougli it is possible that the t vo i!>Lould be 

 looked upon as races of a single sx)ecies. 



