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BEMBIDIUM. 



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Between this form and the four-spotted B. sallcei there exists every gradation in the 

 large series I have examined from the localities above cited. The number of red basal 



joints of the antennae also varies, the minimum being one, viz. the scape ; the depth of 

















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the ely tral striae and strength of their punctuation also vary, being in some examples much 

 diminished ; the seventh stria, however, is always absent. In all its varieties the form 

 of the thorax remains constant. It is cordate-quadrate, with simple basal foveae and 

 only slight traces of a carina or minute plica lying obliquely and joining the lateral 

 margin a little before the angle, which latter is projecting rectangular. 

 A specimen from Cordova is figured. 



6 . Bembidium submaculatum. 



Bembidium (Peryphus) submaculatum, Bates, Proc. Zool. Soc. 1878, p. 603 \ 



" Elongato-ovatum, modice convexum, fusco-aeneum, elytris utrmque versus apicem macula obliqua flavo- 

 testacea • antennis piceis, articulo 1° et 2°-4 m basi pedibusque flavo-testaceis ; palpis maxillaribus articulo 

 penultimo obscuro ; thorace traiisversim quadrato, antice modice rotundato, postice leviter sinuatim augus- 

 tato, angulis posticis subrectis, fovea basali profunda vage rugosa, carinaque obliqua juxta angulum; 

 elytris subtiliter striato-punctulatis, striis interdum magis impressis, 7 a abbreviata, exterioribus omnibus 

 versum apicem obliteratis, interstitio 3° bipunctato. 



" Long. 2-i- lin." 



Hab. Mexico, near the capital (Flohr) \ Capulalpam, Jacale (Salle), Oaxaca, Jalapa 



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(Edge). 



Extremely near B. mexicanum, but differs in the seventh stria being distinct, though 

 much abbreviated, and in some examples reduced to a row of faint punctures near the 



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base, and in the thoracic carina being longer and more conspicuous. It is much smaller 

 than the usual size of B. mexicanum. 



7. Bembidium lucidum. 



B. submaculato proximo affine, differt thorace magis rotundato, antennis rufis apice tantum subinfuscatis, 

 elytrisque utrinque macula magna humerali, altera obliqua versus apicem flavo-testaceis; pedibus 

 testaceis ; elytris stria punctata 7 a magis distincta et ultra medium continuata ; thorace basi plus minusve 



punctato. 

 Long. 2^ lin. 



Hab. North America to Hudson's Bay. — Mexico, San Antonio de Arriba (Salle), 

 Oaxaca (Edge). 



Named B. immaturatum by Chaudoir in the Salle collection. I can detect no 

 differences between Mexican specimens and others from various parts of North America, 

 and have received the species from Morrison (taken in Montana) under the name of 



B. lucidum. 



8. Bembidium vernale. 



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B. mewicani exemplaribus cyaneo-olivaceis simile, sed multo minor, thoraceque postice magis sinuatim angus- 

 tato angulisque valde exstantibus. Olivaceum, subcyaneum, antennis basi pedibusque rufo-testaceis ; 

 thorace cordato, postice sinuatim angustato, angulis posticis prominentibus acutis, foveis basalibus parvis 









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