OF THE UNITED STATES. .;7'.> 



tus* have been already pointed out by me. My genua Borniua must be united with Me- 

 tabletus, the ungues being either simple or slightly serrate; the genus Blechrus V 

 which I considered as perhaps identical with Bomius, is nol adopted by Chaudoir, on ac- 

 count of the falseness of the characters given: Chaudoir says thai the typical Bpei 

 has dentate ungues, and must then lore he placed in Metabletus: it is probable that the 

 form of the ungues is not to be considered as of generic value, as we have differences in 

 species that are certainly closely allied. The same variations are to I" 1 Pound in Axino- 

 palpus. 



The third division of the group consists of species of a larger size, living under bI 

 or under hark, and distinguished by the mentum tooth being large and distinct, not ob- 

 scured by a basal membrane: the paraglossae are always connate wiih the ligula: the la- 

 bial palpi arc more or less dilated and truncate: the maxillary palpi are always cylindri- 

 cal, and truncate, never acuminate: the fourth joint of the tarsi is triangular and more 

 or less emarginate. Our genera arc the following: — 



A. Ungues dentati. 



Thorax basi lobatus ; palpi labiales crassi - - - - - nes Li i. 



Thorax basi truncatos ; palpi labiales crassi .... <;], i ,7. 



I, palpi labialos mediocres : tarsi art. I bil bo - Calleida /' . 

 Thorax basi truncatns, palpi labiales mediocres: tarsi art. L u triangulari Cymindis Latr. 



B. Ungues non dentati: thorax basi truncatus - - - - Phil /. 



The characters of these genera have been sufficiently detailed by me in the fifth volume 

 of the Annals of the Lyceum. It is merely necessary to Btate at present thai to Glycio 

 belong Cymindis pur pur e a Say. Trans. Am. Phil. Soc. 2, 9, and ('. \ iridicollis 

 / . Ann. Lye. I, l vx . C. amcena Lee. is only a green variety of C. purpurea, 



Philotecnus ruficollis Lee. Ann. Lye. 5, 175, is evidently Calleida croceicollis M 

 Bull. Soc. Petrop. 2, .">:!. The last-mentioned specific name has, "l" course, priority. 



b. Trechi. 



A group composed of small species, easily distinguished from all other Carabica, by the 

 Stli stria of the elytra being broadly interrupted or obsolete: the sutural fre- 



quently recurved at the apex. The last joinl of the palpi is acuminate, and in some 

 cics is smaller than the penultimate, and Bubulale: this form of palpi, as we will afterwards 

 find, occur- again in the Bembidia, which are distinguished from Trechi, nol only b\ the 

 deep and entire 8th stria, but by the diagonal Buture of the 1 pimera of the mesothorax. 



The ligula is free at the apex and truncate: the males have two joints of the anti rior 

 tar.-i obliquely dilated, and papillose beneath, but in Anophtbalmus > any dilatation 



can be perceived. The anterior tibia are variable in form, being linear and emarginate 

 below the middle in Anophtbalmus, while in Bpaphius and Tachy- they are somewhat 

 dilated and emarginate as far as the middle. These insects have th< bed joints ol the 

 antennae sometimes hairy, and thus approach the Harpali in Stenolophu I more 



nearly in Euca 



I 177 



