146 MEMOIRS ON THE COLEOPTERA 



small and feeble; elytra evenly oval, not quite one-half longer than 

 wide, almost two-fifths wider than the prothorax, the striae and punc- 

 tures nearly as in furtivum, but rather finer. Length (cf) 2.9 mm.; 

 width 1.15 mm. New Mexico (Jemez Springs), Woodgate. 



minax n. sp. 



The species described above under the name furtivum, has a dis- 

 tinctly smaller prothorax, when compared with the width of the 

 elytra, than in 'sphceroderum Bates, as shown by the drawing of 

 the latter on the plate; this, in connection with the blackish femora, 

 leads me to believe that it is distinct; perhaps it may be the indi- 

 cated variety of sphceroderum with partially obscure legs, or closely 

 related thereto. As there are, however, evidently a considerable 

 number of species in this group, which is widely distributed over 

 the various parts of Mexico, Arizona and New Mexico, there is 

 but little possibility of actual specific identity of furtivum with 

 splmroderum. The above species are in no cases closely allied among 

 themselves. 



Group XIV quo drimacula turn 

 Subgenus Lopha Steph. 



The rather numerous very small species of this subgenus stand 

 apart from the majority of types in the genus Bembidion in several 

 striking characters. For example, the sides of the prothorax basally 

 become briefly and feebly sinuate just before a minute projection 

 bearing the strong setigerous puncture; this hind angle is, however, 

 by no means at the extreme base, for the sides of the latter are very 

 oblique for a short distance from the median truncate part or base 

 proper, the general structure being in this respect suggestive of the 

 preceding group, and, in a similar way, the subbasal impression 

 takes the form of a continuous, but here strongly punctured, chan- 

 nel, delimiting the strongly beaded basal margin. At the minutely 

 prominent hind angle there is in all known species a very minute 

 fine carina, only observable under considerable enlargement; this 

 is not wanting in mutatum and related forms as stated by Mr. Hay- 

 ward. Between the moderately oblique frontal sulci and each side 

 margin, there is anteriorly an elongate irregular fovea, which, in 

 conjunction with the regular superciliary puncture, gives the ap- 

 pearance of a duplication of the sulci, with the outer sulcus inter- 



