Dec, igio.] SCHEAFFER : NeW ClAVICORN CoLEOPTERA. 213 



last three antennal joints, which are not as closely placed together 

 as in our other species, separates this species from all the known 

 North as well as Central American species. Judging from the de- 

 scription the Mexican Catapius irregularis Sharp seems to resemble 

 the above described insect but the form of prosternum and tioial 

 spurs which are the same as in our species of Litargus separate the 

 two. 



Family Monotomid^. 



4. Hesperobsenus alternatus, new species. 



Color brown or piceous ; antennte, elytra and legs rufo-testaceous. Head 

 alutaceous, coarsely and somewhat densely punctate, sparsely clothed with 

 dirty gray hairs. Prothorax longer than wide ; sides crenulate and feebly 

 arcuate ; base slightly narrower than apex ; apical angles rounded not promi- 

 nent ; surface dull and corsely punctate, punctures well separated on the disk 

 but more dense at sides and absent in a longitudinal, narrow, median space. 

 Elytra feebly depressed ; sides slightly arcuate ; surface striate ; striae with 

 moderately coarse punctures ; third and fifth intervals with a row of punc- 

 tures from base to almost middle, the punctures are of equal size to those of 

 the strise. Body beneath coarsely but not densely punctured. Length 3 mm. 



Huachuca Mts., Arizona. 



This species resembles very much in form H. ahhrcviatus Mots., 

 but differs in having the anterior angles not prominent, the elytral 

 striae much more coarsely punctate and the third and fifth elytral in- 

 tervals punctate. It seems to be very near the Mexican H. sub- 

 testacens Reit., and it is possible that this may prove to be the same. 



Family Cucujid^. 



5. Laemophloeus impressifrons, new species. 



Pale-castaneous, elytra blackish with a somewhat oblique, pale spot, very 

 slightly behind middle, upper surface sparsely pubescent. Head subtriangular ; 

 eyes prominent, in advance of the apical margin of prothorax ; labrum and 

 epistoma feebly emarginate ; surface sparsely and finely punctate, longitudinally 

 rather deeply impressed, epistomal suture indistinct ; antennae reaching slightly 

 below middle of elytra, third joint slightly longer than second, fourth to 

 eighth short, but feebly increasing in width, ninth to eleventh suddenly larger, 

 forming a distinct club. Prothorax as wide as the head, very feebly narrow- 

 ing to base ; sides nearly straight ; apical angles subacute ; basal angles acute ; 

 sides near basal angles feebly reflexed ; surface moderately densely punctate ; 

 lateral grooves distinct. Scutellum triangular. Elytra slightly wider than the 

 thorax at base ; sides feebly arcuate ; apices arcuate-truncate ; disc tristriate ; 

 intervals finely, confusedly, but not densely punctate ; lateral carina obsolete- 

 Underside except head, finely and sparsely punctate. Length, 2.75 mm. 



