40 MEMOIRS ON THE COLEOPTERA 



Lichminus is rather closely allied to Pelochares Muls., but differs 

 rather strikingly in the structure of the lateral and inferior parts 

 of the prothorax as detailed above. Phalachrichus Sharp and the 

 closely allied Limnichalia are the least aberrant of the four purely 

 tropical genera of the Limnichini now known. Limnichus Latr., and 

 Limnichoderus constitute a well-marked group, though relatively 

 limited in extent and forming but a small part of the tribe. 



Limnichites Csy. 



Limnichus (subgen. Limnichites Csy.), olim. 



The prominent, coarsely faceted eyes and mode of antennal 

 insertion sufficiently distinguish this genus, which is one of the more 

 isolated types of the tribe, not only for those reasons but on account 

 of the very deep and pronounced sculpture of the entire body 

 generally prevailing. We have at present the following eight 

 known species: 



Elytral punctures large, very deep and so densely crowded as to be 

 regularly polygonal, with very fine separating walls, resembling a 

 honey-comb 2 



Elytral punctures almost as large and very deep but impressed, circular 

 and isolated, separated by their own diameters to about one-half 

 that extent according to the species 3 



Elytral punctures decidedly smaller, less deep, more perforate than im- 

 pressed and separated by from two to nearly three times their own 

 diameters 6 



2 Oblong-suboval, the sides straight and parallel medially, black, not 

 shining because of the dense sculpture though the fine interspaces 

 are shining; pubescence very short, decumbent, coarse, cinereous, 

 irregularly variegated with fulvous; punctures of the head and elytra 

 rather large, polygonally crowded, those of the pronotum and ab- 

 domen almost equally dense but not quite so large; prothorax nearly 

 two and one-half times as wide as the median length, the sides mod- 

 erately converging from base to apex and feebly, subevenly arcuate, 

 the apical angles produced and acute from above; surface obtusely 

 impressed along the median line except apically, the scutellar lobe 

 moderate; scutellum ogival, densely, coarsely punctate, slightly 

 longer than wide; elytra scarcely a third longer than wide, rapidly 

 very obtusely narrowed behind in apical third; third and fourth 

 ventral sutures rather strongly gradually bent posteriorly toward 

 the sides; hypomera only impressed near the inner angle. Length 

 1.6 mm.; width 0.85 mm. Texas (Austin and Columbus original 

 type from San Bernardino, Cal.). [Limnichus nebulosus Lee., 

 Bull. U. S. Surv., 1879, V, p. 515] nebulosus Lee. 



Oblong-oval, slightly larger and stouter, the sides straight for a shorter 

 distance medially, black; sculpture throughout nearly as in nebulosus, 



