104 GEO. H. HORN, M. D. 



sparsely punctate, reticulate at the sides. Legs slender, moderately lung. Posterior 

 tarsi as in miranda. Length .28 — .52 inch; 7 — 13 mm. 



Last ventral segment broadly eniarginate, the angles acute but not 

 prominent. 



This species could only be mistaken for the next, in which however the 

 sides of the thorax are different and the elytra more acuminate at tip. 



Occurs from Maine to Alaska. 



As this species has such-a wide distribution in our country and in the 

 northern regions, may it not be really identical with appendiculata which 

 seems as widely distributed in the Eastern Hemisphere ? 



M. atropurpurea Say. 



Resembles the preceding very closely and differs in the following 

 characters : 



Thorax with sides regularly arcuate, widest at middle. Elytra acute and usually 

 slightly acuminate at tip. Length .30 — .52 inch ; 7.5—13 mm. 



This species follows the line of distribution already indicated for 

 miranda. 



M. Drilitinioudi Kby. — Color variable from greenish to dark bronze, more 

 shining beneath, form subdepressed. Head coarsely, densely and deeply punc- 

 tured, rarely with a smooth spot on each side, sometimes the occiput is slightly 

 strigose. Thorax narrower at apex, widest near the middle, sides feebly arcuate, 

 disc distinctly impressed each side, the surface coarsely and densely punctured 

 at the sides, transversely strigose at middle, lateral margin obliterated in front, 

 smooth beneath posteriorly; thorax beneath coarsely and densely punctured, tip 

 of presternum suddenly narrowed. Elytra densely granulate punctate, and with 

 three fine, rather vague costre, lateral margin scarcely serrulate, apices obtuse, 

 surface with three spots on each elytron arranged as in fulvoguttata sometimes 

 entirely wanting. Body beneath and abdomen sparsely punctate. Posterior tarsi 

 as in gentilis. Length .32— .42 inch; 8-11 mm. 



The last ventral segment is subtruncate in the male, obtusely rounded 

 in the female. 



In our fauna this species has a wide distribution, from Maine to 

 Alaska, varying to a greater or less extent in its course without present- 

 ing any characters by means of which local varieties might be indicated. 

 I have observed that very many of our species in other families which 

 have a subarctic transcontinental distribution occur in Siberia extending 

 even to Europe making the complete circle. In some cases the Asiatic 

 form bears another name, and I am inclined to believe that guttidata 

 Grebl., is not specifically distinct from the present species but merely 

 a slight variety. 



HI. fulvoguttata Harris.— Oblong, moderately convex, dark bronze above, 

 more brightly metallic beneath, elytra usually with three spots on each. Head 

 densely punctured, somewhat strigose on the occiput, clypeus truncate. Thorax 



