1873.1 4:00 [Horn. 



Black, subopaque. Rostrum nearly as long as head anrl thorax, 

 sparsely punctured. Antennae piceous. Head elongate conical, mode- 

 rately densely punctured, eyes feebly prominent. Thorax longer than 

 wide, anteriorly feebly constricted, sides feebly arcuate, base narrower, 

 at middle broadly arcuate, on each side very slightly sinuate, hind angles 

 not laminiform, disc moderately convex, near the anterior angles a short 

 spine and several serrations, surface densely punctured with median line 

 smoother. Scutellum densely clothed with white pubescence. Elytra 

 slightly broader behind, base scarcely impressed, surface deeply striate, 

 striae coarsely punctured, intervals convex, transversely wrinkled. Py- 

 gidium densely punctured and opaque. Body beneath densely, abdomen 

 more sparsely and finely punctured. Mesosternum protuberant in front. 

 Legs black. Length .14-. 24 inch ; 3.5-6 mm. 



Male. Rostrum shorter, less arcuate, slightly dilated at tip. Antennas 

 inserted near the tip of rostrum, scape (<§ 9 ) n °t attaining the eyes. 



The males are smaller than the opposite sex. Resembles olyra in 

 appearance, but differs in form of head, length of scape and protuberant 

 mesosternum. 



Occurs in Canada, Pennsylvania, Georgia, Dakota. 



M. olyra Herbst. Kafer. VII, p. 6, pi. 99, fig. I ; Boh. Schonh. Gen. 

 Cure. VII, 2, p. 140 ; brunnipes Gyll. Schonh. Gen. Cure. Ill, p. 270. 



Closely resembles the preceding. Differs as follows: Hind angles of 

 thorax feebly laminiform. Mesosternum not protuberant. Head very 

 broadly conical. Antennae, tibiae and tarsi pale piceo-testaceous. Length. 

 .16-. 24 inch ; 4-6 mm. 



Antennae inserted as in barbita, the scape barely attaining the eyes in 

 9 but passing them § . 



Occurs with the preceding, but rarely in the Southern States. 



M. gracilis Lee. Pacif. R. R. Rep. 1857, App. 1, p. 57. 



Black, subopaque. Head rather broadly conical, eyes convex. Thorax 

 slightly wider than long, hind angles not prominent, disc densely punc- 

 tured, punctures shining at bottom. Scutellum densely clothed with 

 white pubescence. Elytra scarcely wider behind, base feebly impressed, 

 deeply striate, striae coarsely punctured, intervals narrower than the 

 striae, convex, rather coarsely transversely strigose. Pygidium coarsely 

 granulato-punctate. Body beneath coarsely punctate, abdomen shiniug, 

 very sparsely and finely punctulate. Antennae piceous, legs black. 

 Length .14 inch ; 3.5 mm. 



The characters otherwise ai - e as in barbita without the prominent meso- 

 sternum. The head is more conical than in olyra without being of the 

 form of barbita and salicis. 



Occurs in California. 



M. salieis n. sp. 



Differs from olyra as follows : Head elongate conical. Thorax more 

 coarsely and equally densely punctured. Scutellum without white pubes- 



