300 Trans. Acad. Sci. of St. Louis. 



obvionsly, wider than the head, two-thirds wider than long, conrex, the 

 sides parallel and broadly, evenly arcuate, the base arcuate, the usual 

 sparse punctures small and inconspicuous; elytra a third wider and 

 nearly one-half longer than the prothorax, the humeri only moderately 

 exposed, rounded, the punctures minute, sparse and indistinct; 

 abdomen broad, parallel, narrowed toward tip. Male with four fine 

 feeble obliqne and eabequidistant cariniform asperilies near the tip 

 of the fifth tergite in more than median third, the two median but slightly 

 more widely separated than those of the outer pairs, the sixth with two 

 short and sharply angulate projections in median third, the intervening 

 edge nearly straight but with two very minute, posteriorly and feebly 

 projecting points at the middle; female with the sixth tergite evenly 

 subtrnncate at tip. Length l.S-1.5 mm.; width 0.58-0.6 mm. New 

 York (Catslsill Mts.) and Pennsylvania (near Philadelphia). 



laetnla n. sp. 



Form nearly as in laetula but not so stout and smaller in size, similarly 

 sculptured and colored, except that the antennae from the fourth joint 

 are rather darker or more blackish in tint, the joints fully as transverse ; 

 integuments highly polished ; prothorax and elytra almost similar. Male 

 having four small asperities near the apex of the fifth tergite in rather 

 more than median third, the two inner having the form of very slightly 

 elongate flattened tubercles, very much more widely separated than 

 either from the outer asperities, which have the form of fine elongate 

 carinules; sixth tergite with two very small pointed processes at tip, 

 separated by about a third of the width, the interveningledge rectilinear, 

 continuing the general contour of the apex and apparently not modified 

 in any manner; /(smaZe unknown. Length 1.26 mm.; width 0.61 mm. 

 Rhode Island (Boston Neck) rhodeana n. sp. 



Form nearly similar but stouter than in either of the two preceding species, 

 polished, similarly feebly micro-retlculate and similarly colored, the 

 head and prothorax relatively rather larger but similar in form and 

 sculpture; antennae stout, the outer joints transverse, blackish, flavate 

 toward base; elytra a fourth wider and two-fifths longer than the pro- 

 thorax, the humeri moderately exposed ; abdomen broad, subparallel, 

 rapidly and arcuately narrowed at tip. Male with four small elongate 

 and subcariniform asperities in more than median third of the fifth 

 tergite and near the apical margin, the asperities mutually almost simi- 

 lar, oblique toward the median line, the two median more abbreviated 

 and slightly more widely separated than either from the two outer; 

 sixth with two small porrect and flattened processes in median third of 

 the apex, the processes rather broad, with their apices rounded, the in- 

 termediate space with two very minute approximate acute and porrect 

 processes ; /ema^e unknown. Length l.i mm.; width 0.62 mm. New 

 York (Peeksklll) fnstlfer n. sp. 



Form larger and stouter than in the three preceding, the prothorax much 

 smaller and less transverse, the humeri much more widely exposed, 

 shining, micro-reticulate throughout, pale flavate, the elytra less 

 rufous, not maculate, the abdominal cloud very small, conflned to the 

 median part of the fourth tergite; head blackish, paler apically, the 

 antennae stout, extending to about basal third of the elytra, the second 



