96 MEMOIRS ON THE COLEOPTERA. 



rather well separated even on the elytra, sparse on the abdomen, the 

 vestiture short, pale, not conspicuous; color very dark rufo-piceous, 

 the head and abdomen blackish, the latter paler basally and at apex, 

 the elytra pale, albido-flavate almost throughout; head large, transverse, 

 fully four-fifths as wide as the prothorax, the eyes prominent, at two- 

 thirds their length from the base, the tempora converging in even circular 

 arc behind them to the base, the carinae fine, entire; antennae rather small, 

 slender and pale basally, moderately incrassate and dark thence to the 

 tip, the second and third joints equal in length, the latter slender and 

 pedunculate basally, fourth distinctly wider than long, the outer joints 

 rather strongly transverse, the last fully as long as the two preceding; 

 prothorax short, nearly as in the preceding but without median impression 

 of any kind; elytra moderately short, with feebly diverging straight sides, 

 but very slightly convex, at base slightly, at apex about a fourth, wider 

 than the prothorax, the suture two-fifths longer; abdomen slightly nar- 

 rower than the elytra, perfectly parallel and with straight sides, the 

 fifth tergite barely as long as the fourth. Length 1 .6 mm. ; width 0.45 mm. 

 Rhode Island (Boston Neck). 



Distinguishable by its very small size, rather slender form, large 

 head, coloration and other characters; it is of the gnoma type like 

 the two preceding. 



From the suburbs of Philadelphia I have before me a male, which 

 cannot be distinguished in any tangible way from comitata, though 

 rather smaller and less stout; the sixth ventral plate is circularly 

 rounded and not narrower and distinctly parabolic, as it is in gnoma. 

 Comitata and gnoma are closely allied but differ in many minor 

 directions, as well as in the form of the sixth male ventral ; the follow- 

 ing, however, though belonging to the same group as gnoma, comitata 

 and the three preceding, differs in its much smaller head, wherein 

 it resembles more closely nympha, which however has a crenulate 

 sixth male tergite: 



Atheta modiella n. sp. Coloration and sculpture as in gnoma, the form 

 more slender; head less developed, though fully three-fourths as wide as 

 the prothorax, the eyes large, rather prominent, the tempora three-fifths 

 as long, the carinae entire; antennae moderate in length, not very incras- 

 sate, dusky, pale basally, the second and third joints subequal, less than 

 twice as long as wide, four moderately transverse, the outer joints not 

 more than one-half wider than long, the last as long as the two preceding; 

 prothorax barely one-half wider than long, parallel and rather feebly 

 rounded at the sides, the latter more rounding and converging anteriorly, 

 the base rounded with the angles obtuse and evidently rounded, the median 

 line finely impressed to a little beyond the middle; elytra not very short, 

 subparallel, with straight sides, slightly wider and a third longer than 

 the prothorax; abdomen distinctly narrower than the elytra, parallel, 



