MONOTOMID/E 89 



wider than the prothorax, parallel, with rather strongly arcuate sides and 

 arcuato-truncate apex, the punctures regularly serial and rather coarse, 

 each with the usual short coarse pale hair; pygidium very coarsely but 

 loosely punctate apically, the punctures rapidly becoming small, close 

 and deeper toward base; abdomen finely, feebly punctate throughout. 

 Length (9) 1.7 mm.; width 0.55 mm. District of Columbia. A single 

 example. 



This species can be compared only with picipes, but it differs 

 conspicuously in its smaller size, shorter antennae, much narrower 

 prothorax, with obsolescent basal impressions, relatively more 

 oval elytra, smoother and very differently sculptured pygidium 

 and bright rufous legs. In picipes the thoracic impressions are 

 not very deep but are always obvious. 



Monotoma famelica n. sp. Male rather slender and but slightly 

 ventriculate, moderately small in size, black, the elytra feebly rufescent, 

 the antennae and legs bright rufous; head slightly narrower than the pro- 

 thorax, densely and rugosely sculptured and deeply biimpressed; antennae, 

 excepting the club, longer than the head, the third joint not twice as long 

 as wide, the club oval, longer than wide; prothorax distinctly elongate, 

 very coarsely and polygonally punctured throughout, the subbasal im- 

 pressions distinct and elongate-oval; apex slightly narrower than the 

 base; sides feebly arcuate and strongly, acutely serrulate; apical nodes 

 very prominent, the basal smaller, scarcely larger than one of the serra- 

 tures; elytra three-fourths longer than wide, scarcely one-half wider than 

 the prothorax, the parallel sides feebly arcuate, the apex truncate; serial 

 punctures close-set, rather coarse but gradually feebler distally; pygidium 

 with very moderate punctures, well separated distally, close but scarcely 

 at all smaller basally; abdomen finely and feebly punctate, less finely and 

 more closely basally and apically. Length (cf) 1.85 mm.; width 0.58 

 mm. California (Lake Co.). A single male, with which is placed a 

 female from Clackamas Co., Oregon, differing only in being a trifle more 

 ventriculate and obviously of. stouter form. 



Also allied to picipes, but it differs in its smaller size and more 

 slender outline, less impressed under surface of the head, finer 

 metasternal punctures and narrower prothorax, with more sharply 

 and strongly serrulate sides and moie acutely prominent apical 

 nodes, the comparisons being made from males of both. 



Monotoma arida n. sp. Body small and moderately slender, rather 

 convex, dull and rather convex above, less dull and more finely sculptured 

 beneath; head evidently narrower than the prothorax, wider than long, 

 with notably large and finely faceted eyes, the vertex unimpressed, 

 coarsely, polygonally punctate; antennae and legs rufous, the former rather 

 slender, extending beyond the middle of the prothorax, which is barely 

 visibly longer than wide, with nearly straight, subparallel and feebly 

 crenulate sides, the nodiform projections at the anterior and posterior 



