364 Coleopterological Notices, IV. 



extremely difficult to maintain the Erirhinini, Anthonomini and 

 Tychiini as satisfactory tribes, their limits being not at all well 

 defined under the present scope. It would be more in accordance 

 with natural affinities to unite them, and the resultant tribe might 

 then be readily subdivided into numerous well-marked groups or 

 subtribes. 



1 D. insequalis n. sp. — Oblong, slightly suhcuneate, feebly convex ; 

 integuments black, obsoletely mottled with, testaceous, especially laterally ; 

 vestiture rather dense but not altogether concealing the shining surface, 

 somewhat fine, moderately long, subrecumbent, finely and confusedly mottled 

 paler and darker, with numerous long erect and bristling setae. Head with a 

 large deep frontal fovea, the eyes large, feebly convex ; beak long, equally, 

 evenly and rather strongly arcuate throughout in both sexes, two-thirds longer 

 than the prothorax, deeply punctate and longitudinally sulcate, with the 

 antenna? inserted rather beyond apical two-fifths in the male, slightly more 

 slender, very much longer, fully two-thirds as long as the body, cylindrical, 

 finely but closely seriato-punctate, with the antennae inserted at the middle in 

 the female. Prothorax in the male large, transversely oval, fully as wide as 

 the base of the elytra and more than one-third as long as the latter, in the 

 female much smaller and more transverse, distinctly narrower than the base 

 of the elytra and scarcely more than one- fourth as long as the latter ; punc- 

 tures rather coarse, deep, moderately dense. Elytra with the sides straight 

 in basal two-thirds, nearly parallel in the male but feebly divergent from the 

 humeri in the female, obtusely parabolic in apical third ; striae slightly im- 

 pressed, the punctures coarse, very deep and approximate ; intervals nearly 

 flat, finely, not densely punctate. Abdomen finely and densely punctate. 

 Length 5.4-6.5 mm. ; width 2.3-2.8 mm. 



California (Los Angeles). 



The sexual differences in this species are more pronounced by far 

 than in any other within our fauna. In the male the basal joint of 

 the antenna! funicle is but slightly longer than the next two, the 

 anterior legs slender and very long, the femur and tibia each one- 

 half as long as the entire body, the latter evenly, feebly arcuate and 

 slightly spinulose along the inner margin, and the corresponding 

 tarsi have the basal joint longer than the remainder and but slightly 

 shorter than the prothorax, with the inner edge finely and unevenly 

 serrulato-granulose. In the female the second joint of the funicle is 

 slightly longer but not as long as the next three, and the anterior 

 legs are normal, the tarsi stout, with the basal joint shorter than 

 the remainder. This species has been confounded with mucidus 

 heretofore, but differs greatly as may be judged by the description. 



