io8 MEMOIRS ON THE COLEOPTERA 



toward apex; punctures very fine, sparse, equally distributed and sharply 

 defined throughout ; scutellum very small, elongate and acutely triangular; 

 elytra more than twice as long as wide and much more than twice as long 

 as the prothorax, wider at base than any part of the latter and greatly so 

 posteriorly, evenly convex, smooth, the punctures extremely minute 

 simple points, not close, irregularly disposed; impressed striae completely 

 wanting; surface finely and feebly creased in part; rounded humeri 

 minutely and subobsoletely denticulate; under surface of the hind body 

 almost completely impunctate, polished; hind femora somewhat shorter 

 than the tibiae, the latter much shorter than the tarsi. Length 4.2 mm.; 

 width 0.85 mm. Oregon (locality unrecorded). 



This species seems to resemble calif ornica Van D., from northern 

 California, but there the basal part of the prothorax is said to be as 

 wide as the base of the elytra and the pronotal punctures become 

 indistinct toward base, the elytra three times as long as wide which 

 is however probably somewhat overstated, with faintly impressed 

 striae except apically and with close double series of faint elongate 

 punctures; estriata seems also to be materially larger than cali- 

 f ornica. 



Airora Rttr. 



Alindria Lee. et Horn, nee Erichs. 



The differences between this genus and Alindria are rather radical 

 in the structure of the antennae and, although well known to the 

 authors of the "Classification" of our Coleoptera, were completely 

 lost sight of by them, though fully recognized by Sharp in the 

 "Biologia." Airora is North American, probably extending into 

 South America, while Alindria seems to be purely African. The 

 joints of the antennal club are connected near their outer margins 

 in the former, and at points only slightly eccentric in the latter, 

 genus. The tips of the mandibles are abruptly smooth and polished. 

 Airora does not form part of the preceding tribe but is more closely 

 allied to Temnoscheila Westw. The peculiar intra-humeral pit of 

 the latter is not even faintly suggested and the antennal club is 

 much shorter and more compact. Our species are rather numerous 

 and those known at present are the following: 



Body larger in size. Cylindric but not very slender, deep shining black 

 in color, sometimes testaceous throughout when immature, the 

 under surface, legs and antennae blackish-castaneous when mature; 

 head opaculate, strongly but sparsely punctate, very broadly and 

 feebly impressed medially toward apex; antennal club rather narrow 



