284 GEO. H. HORN. 



to the Antilles and Mexico, and in the Eastern Hemisphere to Ma- 

 deira and Madagascar. The specimens seen from our fauna are 

 from Florida and North Carolina. 



I>. cacti Lee— Oval, slightly oblong, piceous black, shining. Mouth parts 

 lather dark rufo-testaceous. Antennae paler testaceous with l)rownish club. 

 Head closely punctate, more finely in ffont, usually a small group of coarser 

 punctures on each side of the occiput. Thorax closely and equally, but not 

 coarsely punctate. Elytra punctulate, a little more coarsely but less closely than 

 the thorax, the strise replaced by rows of coarser punctures not closely placed, 

 these rather coarser and deeper at the sides, sutural stria distinctly impres.sed 

 on its apical half. Body beneath piceous or brownish, opaque, the middle of the 

 nietasteruum shining, closely, tiuely punctate. Mesosternal elevation similar in 

 outline to that of D. abdominale, the lower edge on a continuous line with the 

 metasternum. Prosternum carinate, the carina much more elevated in front. 

 Legs pale piceo-rufous. Length .20 — .24 inch.; 5 — 6 mm. 



In this species the mentum is rather coarsely and closely punctate, 

 while in ahdoviinale it is nearly smooth. The sculpture varies a little 

 in degree, the specimens from the hotter regions of Arizona being 

 somewhat smoother. In nearly all the specimens there will be ob- 

 served a small ante-basal fovea on the thorax opjiosite the fourth 

 elytral interval, as in many Cercyon, a faint indication of the same 

 will be observed in abdominale. 



Occurs in southern California and Arizona under decomposing 

 Cactus, more especially of the more massive forms (Cereus, etc.). 



D. advectuin n. sp. — Oval, oblong, slightly oblong, piceous black, shining. 

 Mouth parts rufo-testaceous, antennae and palpi paler. Head not coarsely punc- 

 tate, moderately closely on the front, densely on the clypeus. Thorax equally 

 punctate over the entire surface, a little more coarsely than the head. Elytra 

 striato-punctate, the punctures of the discal rows finer and distant, those of the 

 outer three rows much coarser and more deeply impressed, the sutural stria mod- 

 ei'ately impressed from apex nearly half to base, intervals closely punctate, more 

 coarsely than the thorax. Body beneath piceous or brownish, opaque; meta- 

 sternal area shining, finely punctate. Legs piceo-rufous. Length .18 inch.; 

 4.5 mm. 



The mentum is opaque and punctulate, but less coarsely than in 

 cadi, being intermediate between the latter and abdominale. The 

 prosternum has a well marked carina, a little more elevated iu front, 

 but less so than in cacti. The mesosternal elevation is not at all 

 pentagonal, but the sides are gradually divergent from the base to 

 the obtuse apex, the form recalling that seen in Hydrophilus, the 

 lower edge being on the same plane as that of the middle of the 

 metasternum. 



Occurs in Florida, special region unknown. This species may 



