NORTH AMERICAN COLEOPTERA. -tl 



In tlie four specimens before nie I observe no sexual differences, 

 except that one si)ecinien by its more slender form, more shining sur- 

 face and less convex intervals, seems to be a male. 



In general api:)earance the species resembles comentaneus, but is 

 rather darker in color and differs especially in the irregular base of 

 thorax ^vithout marginal line. It also resembles obtumis in form and 

 color, and may be known by the equal s})inules of the hind tibite of 

 that sjiecies as well as the basal marginal line, of which no traces 

 exist in the present species. 



Collected by Prof F. H. Snow in New Mexico. 



A. plis&lerioides Horn. — Elongate, moderately convex, pale yellowish tes- 

 taceous, elytra with short fuscous stripes. Antennae pale, club fuscous. Head 

 convex, without trace of tubercles, surface very sparsely finely punctate ; ch^ieus 

 very feebly emarginate at middle, broadly rounded each side, the sides arcuate 

 not fimbriate, genje very slightly prominent, obtuse. Thorax slightly ai'cuately 

 narrowing from the base, hind angles well defined, but obtuse ; base arcuate, ob- 

 lique near the hind angles, the marginal line faintly visible at middle, disc con- 

 vex, surface very finely alutaceous, the punctures very sparsely placed, irregular 

 in size and feebly impressed. Elytra a little wider than the thorax, humeri 

 rounded, sides feebly arcuate, disc deeply striate, strise closely finely punctured, 

 intervals convex, finely alutaceous and with a row of very fine distant punc- 

 tures ; color pale yellowish testaceous with a fuscous stripe on the sixth interval 

 one-third from base, a second more posteriorly on the fifth, another on the third, 

 these sometimes confluent in an oblique stripe. Body beneath very s])arsely 

 punctate and alutaceous. Anterior tibiae smooth in front, the first tarsal joint 

 shorter than the second. Posterior femora indistinctly, sparsely punctate, the 

 first tarsal joint nearly as long as next three. Length .16-. 20 inch ; 4-.5 nun. 



Afale. — Anterior tibiae .slightly sinuous ou the inner side, the upper tooth very 

 feeble or almost a1)sent. Intervals of elytra scarcely convex. Posterior tibiae 

 slender. 



Female. — Anterior tibiae straight on the inner side, the upper tooth small, but 

 well marked. Intervals of elytra convex. Posterior tibiae stouter than in male. 



In both sexes the anterior tibia at apex is nearly truncate, the 

 apical tooth not prolonged anteriorly. The tibial s])ur is also small 

 and inconspicuous. In facies the species resembles a small Phaleria 

 testacea. 



Occurs at Coney Island, N. Y., and at Atlantic City, N. J., living 

 in regions where the sand is especially white. 



A. liUrreie u. sp. — Moderately elongate, subdepressed, jiarallel, pale yellow- 

 ish testaceous, surface with greasy lustre. Antennae i>ale. Head paler, darker 

 along the thoracic margin, front not tuberculate, feebly convex, very sparsely 

 minutely punctate and finely alutaceous; clypeus impres.sed at middle and with 

 a deej) oval emargination in %,, or moderately and more broadly emarginate 9, 

 the angles eacli side very obtuse, the margin distinctly rcflexcd, sides arcuate, 



TR.\NS. AMER. ENT. .SOC. XIV. (6) FEBRUARY. 1887. 



