470 Coleopterological Notices. 



very fine and feebly impressed stripe of fine, moderately approximate piinctures, 

 the intervals sparsely and still more minutely punctured. Abdomen sparsely, 

 very minutely and feebly punctate. 



Mule. — Without distinct sexual modification. 



Length 3.8-4.0 mm. ; width 1.4-1.6 mm. 



California (Humboldt and San Bernardino Cos.). 



Easily distinguishable from any other species by its coloration 

 and rather robust form ; from guadalupensis, which it approaches, 

 it is to be known at once by its coloration, decidedly smaller size 

 and different antenna! structure. It is the only species which I 

 have seen which extends its range from the Arizona faunal regions, 

 along the Californian sea-coast to the northern limits of the state. 



C guadalupensis n. sp. — Oblong, parallel, rather robust, strongly 

 convex, piceous-black throughout, the legs and antennae dark rufo-testaceous, 

 rather shining; vestiture as in seriatus. Head transverse, nearly flat above, 

 deeply and very densely but rather finely punctate, the punctures finer toward 

 the apex ; epistoma distinctly sinuate ; upper lobe of eye very small ; antennae 

 moderately robust, much shorter than the head and prothorax, rather strongly 

 incrassate toward tip, third joint fully twice as long as wide and but slightly 

 shorter than the next two together, eleventh scarcely visibly narrower than 

 the tenth, the latter one-half wider than long. Prothorax two-fifths wider than 

 flie head and two-fifths wider than long ; base feebly arcuate except near the ' 

 sides, fully as wide as the apex which is transversely truncate ; basal sinua- 

 tions almost obsolete, the angles obtuse but not distinctly rounded and not in 

 the least produced ; sides feebly arcuate, straight toward base ; disk widest 

 rather before the middle, rather finely, deeply and very densely punctate 

 throughout, the punctures equal in size although just perceptibly sparser 

 toward the middle, not at all muricate. Elytra behind the middle scarcely 

 perceptibly wider than the prothorax and but little more than twice as long ; 

 sides rather distinctly arcuate ; apex obtusely rounded ; disk with feebly im- 

 pressed rows »f very small, feeble and rather closely placed punctures, which 

 become more distinct toward base ; intervals minutely and rather sparsely 

 punctate. Abdomen polished, very finely and sparsely punctured. 

 Male. — Without distinct sexual modification. 

 Length 4.7-5.4 mm. ; width 1.8-2.2 mm. 



Guadalupe Island. 



The ample series of eleven specimens which I have before me, 

 enables me to state with confidence that guadalupensis is quite 

 distinct from seriatus, with which it has been confounded by Dr. 

 Horn (Trans. Am. Ent. Soc, V, 1876, p. 199). The size is con- 

 stantly very much greater, and it differs otherwise in its more elon- 

 gate and more densely and coarsely punctate pronotum, and more 



