BEMBIDIINvE 169 



it is slightly bent. The mentum tooth is well developed and rather 

 strongly triangular. The eyes are small and but very feebly con- 

 vex, the sulci broad, shallow, parallel and remote from the eyes and 

 the posterior thoracic angles are without trace of carina ; the elytral 

 striae, apparently only five in number, are somewhat irregularly 

 and broadly, feebly impressed. The gutter at the sides of the ely- 

 tra has a series of small tuberculiferous setigerous punctures pos- 

 teriorly and three or four toward base. The dorsal foveae are 

 broadly impressed, the posterior on the third stria and the anterior 

 between the third and fourth striae, as in true Tachys. The legs, 

 antennae and palpi are normally Bembidiid, but the penultimate 

 joint of the labial is short and very thick. The following is the 

 only species at present in my collection; it may be regarded as 

 the generic type: 



Lymneops angusticeps n. sp.- Rather narrow, elongate and depressed, 

 alutaceous and micro-reticulate throughout, pale red-brown, each ely- 

 tron with a large elongate discal fuscous cloud, wholly undefined; legs 

 and under surface ferruginous; head much narrower than the prothorax, 

 rather longer than wide; antennae thick and heavy though filiform, as 

 long as the elytra, ferruginous, the medial joints not quite twice as long 

 as wide; prothorax a third wider than long, the feebly sinuate apex much 

 wider than the base and barely visibly narrower than the maximum 

 width at anterior two-fifths; base three-fifths the maximum; sides well 

 reflexed, parallel and slightly arcuate anteriorly, oblique in about pos- 

 terior half, sinuate basally, becoming subparallel in basal fifth or sixth; 

 surface but feebly convex; anterior impression subentire, feeble, the pos- 

 terior broad and very shallow; stria rather strong, biabbreviated; foveae 

 small, shallow, distant from the angles, which are right and sharp; elytra 

 parallel, oblong-oval, one-half longer than wide, a third wider than the 

 prothorax, the sides broadly arcuate, somewhat widely reflexed, very 

 gradually rounding at the humeri; foveae rather strong, near basal and 

 apical third. Length (cf ) 2.8-3.0 mm.; width 0.85-1.1 mm. California 

 (San Pedro). 



The anterior tarsi in both male examples at hand are peculiarly 

 broad, with the joints decreasing regularly in width and transverse, 

 the first joint quadrate; in the- female the first joint is probably 

 longer and more slender. 



The species described by LeConte (Pr. Acad. Phila., 1858, p. 61) 

 under the name Lymnceum laticeps, evidently belongs to this genus, 

 resembling angusticeps in general features, but is somewhat larger, 

 3.5 mm. in length, piceous in color above, and has the prothorax 

 not at all wider than the head; the fifth stria is long, deep and ob- 



