336 MEMOIRS ON THE COLEOPTERA 



distinguish the two very readily. The type may be outlined as 

 follows : 



*Zalophia spissicornis n. sp. Rather stout, moderately convex, deep 

 black throughout, excepting the entire inner costa and the narrower outer 

 costa to a little before the middle, scarcely at all shining, the pubescence 

 above everywhere close, long on the prothorax above and beneath, very 

 short on the elytra, deep black throughout; on the under surface of the 

 hind body it is sparse, the latter polished, the punctures becoming fine 

 and dense only at the extreme sides; head very densely, finely sculptured, 

 with a fine tumescent smooth line at base only; antennae (cf) about a 

 fourth longer than the body, feebly tapering and flattened distally, the 

 third joint nearly a fourth longer than the fourth, which is a little shorter 

 than the equal five to nine, tenth very little shorter but rather abruptly 

 narrower, the eleventh but little longer, the appendage short and scarcely 

 traceable; prothorax two-fifths wider than long, the truncate apex but 

 little narrower than the base, minutely, deeply constricted at the margin; 

 sides broadly subangulate to the tubercle, the surface rather finely, ex- 

 tremely densely punctate, with a very fine and tumescent but not im- 

 punctate median line in more than apical half, circularly concave at 

 the middle basally; scutellum very acute, much longer than wide, punc- 

 tate, but not densely pubescent; elytra cuneiform, at base much wider 

 than the prothorax, two and one-half times as long as wide, rather 

 finely, very densely punctate, the inner ridge notably large, smooth and 

 strong; fifth ventral sinuate medially at apex. Length 14.5 mm.; 

 width 4.2 mm. Ecuador (Babahoyo at foot of Andes). 



Recognizable by the dull and intensely black integuments, 

 bristling black pubescence, very large and entire inner elytral ridge 

 and other characters as related above. 



Crossidius Lee. 



This genus is a very large one and the species are generally 

 well differentiated. Numerous forms still unpublished exist in all 

 the larger collections; the following comprise about all the nonde- 

 scripts that are before me at present: 



Crossidius plagiatus n. sp. General form and coloration as in punc- 

 tatus but a little larger and stouter, the two fine impunctate lines dis- 

 appearing apically on each elytron more evident; antennae (cf) more 

 distinctly longer than the body, otherwise nearly similar; prothorax much 

 less transverse and not so densely or conspicuously pubescent; elytra 

 nearly similar in form and sculpture but with the black sutural marking 

 different, not elongate-fusiform and narrowed before and behind as in 

 punctatus (cf ), but parallel and straight at the sides, obtusely, angularly 

 produced along the suture anteriorly, rounded behind, the suture nar- 

 rowly black to the apices; abdomen much less densely punctate and 

 pubescent, the segments black, finely pale at their apices, the last two 



