COl.EOPTERA. 67 



in the first and second striae ; scutellar striae of about eisht or nine punc- 

 tures, rather long; each elytron having a discal puncture at the anterioi 

 and posterior third, both between the second and third striae, also a long 

 tn-ect seta at the side near the humeri, and several small ones behind ; epi- 

 pleurae paler posteriorly. Legs slender ; first joint of the anterior tarsi much 

 shorter than the next three together, the latter nearly equal, also shorter 

 than the last, rather robust ; first joint of the posterior equal in length to 

 the next three together, more than three times as long as the longest apical 

 spine of the tibiae ; posterior femora with two seta along the lower edge. 

 Length 4.5-4.8 mm. 



Cape May, New Jersey, 4. 



This very tine species is retnarkable for its peculiar proiiotum and 

 convex form, the form of the emargination of the mentiim, and the size 

 of the tooth, and also the nearly glabrous pa]|)i. In Dr. LeConte's 

 cUissification of the Carabidae as given by Lacordaire, this author 

 distinguishes the genus Bembidion by the large size of the tooth, 

 even stating that the mentum is trilobed, the middle lobe being equal 

 in length to the lateral. The present species completely prevents 

 this being used as a distinguishing featuj'e, and in fact in none of 

 those described at this time does the tooth project as far as the lateral 

 lobes. It may be possible, however, that the present species should 

 be placed in Dr. LeConte's genus Ochthedromus. 



It should also be stated that in all the species of Bembidion which 

 I have examined, the sutural striae are continuous to tlie apex where 

 they are recurved and continue tlience as tlie exterior striae of the 

 elytra, as is the case in Tachys, and I am therefore at a loss to know 

 what is meant by Dr. Horn, who, in his revision of the Carabidae, 

 gives the presence or absence of this character as one of the distin- 

 guishing features of Tachys and Bembidion. 



B. desectlim n. sp. — Form strongly depressed, moderately narrow. 

 Color of the head and pronotum black, with dark metallic greenish reflection, 

 of the elytra rather pale piceous-brown throughout without metallic reflec- 

 tion, polished; under surface pale brownish-rufous throughout, legs and 

 antennae same, the latter not paler at base. Head moderate, as wide as 

 long; eyes large, very strongly convex; interocular surface polished, very 

 feebly alutaceous ; lateral longitudinal impressions short and feeble ; inter- 

 mediate surface narrowly and feebly convex ; clypeus much more than twice 

 as wide as long, suture distinct, anterior margin about one-third as long as 

 the width of head, transversely truncate ; labrum slightly more than twice as 

 wide as long, anterior margin broadly and rather feebly arcuate ; antennae 

 slender, much longer than the head and pronotum together, basal joint 

 slightly shorter than the third, robust, sub-cylindrical, slightly swollen 

 toward base, truncate at tip, second three-fourths as long as the third, and 

 very slightly shorter than the fourth, joints four to eight equal; mentum 



