INSECTA MADERENSIA. 79 



open plain of the Campo de Baxo, I captured an extensive series, during December 

 of 18i8. 



61. Bembidium tabellatum, WoU. 



B. valde depressum nigro-viride subopacum, protborace cordato basi attenuato angulis posticis rectis, 

 elytris profunde subpunctato-striatis, singulo punctis tribus magnis distinctis impresso, antenna- 

 rum basi pedibusqiie rufo-piceis. 



Long. Corp. bn. 3. 



Habitat Maderam australem, ad marginem rivub cujusdam parvi prope Curral das Romeu'as, sero 

 autumno a.d, 1847, inventum : in Madera boreaU mibi adbuc non obvium. 



B. very mucb depressed, dull blackish-green, and nearly opake. Prothoraoe small, cordate, much 

 attenuated behind, the posterior angles being right angles j with a distinct dorsal channel ; and 

 a veiy deep, roughened fovea on either side at the base. Elytra less parallel than in the last 

 species, and rather acuminated behind ; very deeply striated, the strijE being minutely punctm'ed 

 and the interstices rather convex ; with three very large, distinct, and deeply impressed points on 

 the disk of each near the third stria from the suture. Antenna elongated, their base rufo-piceous 

 or ferruginous; darkly infuscated, or almost black, towards their apex. Leffs more or less 

 piceous, or fusco-piceous. 



Apparently the representative in these islands of the common B. tihiale of more 

 northern latitudes, of which indeed it is just possible that it may be a geogra- 

 phical variety. Still, it presents so many small distinctive characters peculiarly 

 its o"\vn that it is scarcely safe to refer it to that insect. Thus, it differs from it in 

 its extraordinarily depressed body, in its uniformly opake and darker surface, in its 

 small, short, and cordate prothorax, which is exceedingly attenuated behind, and 

 in its more deeply striated and apicaUy acuminated elytra, which have moreover 

 three very large and distinctly impressed points, instead of only two, on the disk 

 of each. Its antennte also are somewhat longer than those of that species, and its 

 tibise are not sensibly paler than the femora and tarsi, — its legs being entu'ely 

 picescent, It would seem to be local, occui"ring at the edges of the streams 

 towards the south of the island. In the ravine immediately to the westward of 

 the Curral das Romeiras, towards the Mount Church, I captm-ed it sparingly 

 during the autumn of 18i7, but I have not since succeeded in detecting it. 



62. Bembidium elongatum. 



B. angusto-elongatum subaenescenti-viride, prothorace elongato-subcordato basi valde attenuato angulis 

 posticis rectis, antice posticeque punctato, elytris subcyanescentibus subcylindricis profunde 

 punctato-striatis, striis apicem versus evanescentibus, singulo punctis duobus impresso et macula 

 submarginali testacea. longe intra apicem ornato, antennarum basi pedibusque paUidis. 



Long. Corp. lin. 2-2A. 



