1873.] J-*- [Horn. 



Female. First joint of antennae half the length of head, flattened and 

 gradually broader to tip, more distinctly punctulate than the male, joints 

 2-11 sub-equal and gradually more slender to tip. Last joint of labial 

 palpi broadly triangular. Anterior tibiae bicalcarate. Femora pubescent 

 beneath. Sixth abdominal segment sub-truncate. Occurs in Texas and 

 Arizona. 



M. ochrea, Lee. Proc. Acad. 1853, p. 342. 



Pale testaceous, sparsely clothed with pale luteous pubescence. Form 

 similar to albida. Head moderately punctulate and sparsely pubescent. 

 Antennae with basal joint luteous, outer joints piceous. Thorax feebly 

 convex, densely punctulate with smooth fine median line. Elytra finely 

 punctate, sparsely pubescent. Body beneath and legs similar to the 

 upper surface. Length .65 inch ; 16 mm. 



Male. First joint of antennae longer than half the head, arcuate, grad- 

 ually broader to tip, flattened and obliquely truncate, joints 2-11 sub- 

 equal, stout and obconical. Lower edge of femora glabrous. Anterior 

 tibia? with one spur. First joint of anterior tarsi broad, obliquely pro- 

 longed, concave above and shorter than the second. Sixth abdominal 

 segment broadly emarginate at tip. Last dorsal segment moderately 

 prolonged and notched at tip. 



Female. Unknown. 



Collected at New Braunfels, Texas. 



M, virgulata, Lee. New Species, 1866, p. 156. 



Piceous, sparsely cinereo-pubescent. Form similar to albida but more 

 slender and very much smaller. Head moderately punctured, with fine 

 median smooth line and sparsely pubescent. Thorax moderately punc- 

 tured, sparsely pubescent and with fine smooth median line. Elytra 

 punctate scabrous, sparsely pubescent, with a denser line of pubescence 

 at the middle of each elytron. Body beneath piceous, sparsely punctu- 

 late and pubescent. Legs pale testaceous. Length .34-. 40 inch ; 9-10 mm. 



Male. First joint of antennae nearly as long as the head, moderately 

 arcuate, flattened and sinuately emarginate near the tip ; second joint 

 smaller than the third and the two together equal to the fourth ; joints 

 4-11 sub-equal gradually more slender to tip. Femora beneath glabrous 

 at base. Anterior tibiae with one terminal spur. Anterior tarsi with 

 first joint shorter than second, slightly obliquely prolonged and some- 

 what concave above. Sixth abdominal segment broadly emarginate. 



Female. First joint of antennae not half as long as the head, slightly 

 arcuate and somewhat broader to tip, joints 2-3-4 gradually longer, 4-11 

 sub-equal. First joint anterior tarsi longer than the second and not 

 deformed. Femora pubescent. Sixth abdominal segment sub-truncate. 



Collected at Cape San Lucas. 



M. torsa, Lee. Proc. Acad. 1853, p. 343. 



Black, sub-opaque, sparsely cinereo-pubescent. Head moderately 

 densely punctulate. Antennae black. Thorax slightly broader than long, 



