2 MANDIBULATA. — COLEOPTERA. 



The family and the genera into which I conceive that it should 

 be divided may be known by the subjoined characters. 



Palpi; external maxillary and labial, with the terminal joint very minute, 

 subulated; the preceding generally much incrassated and clavate: labrum 

 usually transverse : mandibles rather short, sometimes slender and porrect : 

 labium quadrate: mentum emarginate. Antenna filiform, longer than the 

 thorax : head generally narrower than the thorax; the latter various in form : 

 elytra oblong-ovate ; rarely linear : anterior tibia emarginate : anterior tarsi 

 of the males with one or more dilated joints, sometimes armed with a recurved 

 claw beneath. 



^lineare, valde 

 depressum 



■^ subovale, 

 convexum 

 aut paulo 

 depressum : 



G5. 

 06. 



C 4 -to aequali : 

 Antennae articulo 3-tio ? 



(_ 4-to longiori : 



'transversus, haud frotundatus, \ e ^ ." * af ,' 

 truncato-cordatusJ * emarginatus: 67. 



postice (^ acutus : . . . 68. 



x valde acutis, C 5-to longiori: . 69. 



rWr jcordato- iprominulis:^ 

 ,i antennae ar- J 

 I ~jjg ' < ticulis 3 et 4 ( 5-to breviori : . 70. 

 J vix acutis, ( mediocres : f subre- 

 9 deflexis: \ thorax < motus : 71« 

 Oculi-l postice t sessilis: 72. 



64. Lymnjeum. 



■ posticis 



ClLLENUM. 



Tachys. 

 Philochthus. 



OCYS. 



Peryphus. 



NOTAPHUS. 

 LOPHA. 



Tachypus. 



magm : 



73. Bembidium. 



Genus LXIV. — Lymn^eum # mihi. 



Palpi rather elongate ; external maxillary with the basal joint minute, the second 

 very long, cylindric, the third stout, subclavate, very pilose, shorter than the 

 second, terminal very minute : labial with the terminal joint one- third as long 

 as the preceding, which is much incrassated, ovate-truncate, and very pilose : 

 labrum transverse, entire, slightly rounded anteriorly : mandibles short, ob- 

 tuse, bent : mentum deeply emarginate, the emargination with an obtuse lobe. 

 AntenncB slightly pubescent, with the basal joint naked, the third and fourth 

 joints of equal length ; the following elongate : head large, subovate : thorax 

 cordate truncate : elytra nearly linear, greatly depressed : anterior tarsi of the 

 males? with the two basal joints dilated; the antepenultimate with a curved 

 spine beneath. 



Lymnseum differs from Cillenum by the equal length of the third 

 and fourth joints of the antennae, and by the elongation of all the 

 following, by having the labrum entire, and slightly produced in 

 the centre, by the greater elongation of the palpi, and by their 

 form and proportions; the terminal joint of the labial being much 

 longer, and of the external maxillary considerably shorter, than in 

 that genus ; the third joint of the latter is much more robust, and 



1/U.V/t, 



