122 GEO. H. HORN, M. D. 



M. tennis, n. sp. — Piceous, slender, shining. Head dark rufo-piceous, 

 smooth shining. Antennae piceous, three basal joints paler. Thorax as broad 

 as the elytra, smooth, shining, rufous, no discal punctures. Elytra piceo-rufous, 

 as broad as long, strise of punctures moderately distinct. Abdomen piceous, 

 apices of segments paler, shining, very sparsely punctate and slightly pubes- 

 cent. Body beneath piceous, abdomen more distinctly punctured, legs and 

 coxse testaceous. Length .10 inch; 2.5 mm. 



This species is very much smaller and more slender than /epidus 

 and differs more especially in the stouter third joint of the maxillary 

 palpi. 



Collected by Dr. Schwarz, in the Lake Superior region. 



M. lucidulns. Lee. — Piceous shining, elytra often rufous. Head almost 

 black, smooth sliining. Antennae rufous, basal joints paler. Thorax piceo- 

 rufous, smooth shining, with the usual marginal and two discal punctures 

 behind the middle. Elytra piceo-rufous or rufous, with the usual rows of 

 punctures, and a single, sometimes several punctures in the space between the 

 sutural and humeral rows, form as long as wide. Abdomen piceous, apical 

 margins of segments paler, coarsely but sparsely punctured and sparsely 

 pubescent. Body beneath piceous. Legs testaceous, anterior coxae always 

 darker. Length .10 — .12 inch- 2.5 — 3 mm. 



This species is readily known by the presence of the discal punc- 

 tures of the thorax and from the next by the elytral sculpture. 



Occurs in Pennsylvania and Illinois. 



91. censors, Lee. 



This species resembles the preceding but is somewhat more robust 

 in form and has an additional row of five or six punctures within the 

 normal humeral row. In every other respect the two species agree 

 and future collections may add this (represented by an unique), to the 

 preceding. Length .14 inch ; .3.5 mm. 



One specimen, Michigan. 



M. americanns, Er. — Rufo-piceous, shining. Head rufo-testaoeous, shin- 

 ing. Antennae testaceous, middle five joints darker. Thorax rufo-testaceous, 

 smooth shining, no discal punctures, slightly broader than the elytra. Elytra 

 distinctly longer than wide, rufo-testaceous, sutural row of punctures distinctly 

 impressed, humeral row obsolete. Abdomen rufo-piceous or rufous, coarsely 

 but sparsely punctured, sparsely pubescent. Body beneath as above, abdo- 

 men more distinctly punctured. Legs testaceous. Middle and hind tibiae 

 obliquely truncate, fimbriate with short equal spinulos. Length .12 — .14 inch ; 

 3 — 3.5 mm. 



By the structure of the four posterior tibi.c this species may be 

 known from every other except the next species, from this the cha- 

 racters of the table are amply sutlicient to distinguish it. 



Occurs rather abundantly in the Lake Superior region and British 

 Columbia, Crotch. 



