INSECTA MADERENSIA. 75 



be only just tlistingiushable. The striae of its elytra are also perceptibly punctate, 

 and at least four in number (tbere being the rudiments of even a fifth), whereas in 

 the B. Liicasii there are merely three ; and the impressed points on the disk are 

 apparently obsolete. 



58. Bembidium Lucasii. 



B. Beneo-viridescenti-nigrum, prothorace transverso-subquadi'ato basi attenuato angulis posticis sub- 

 rectis, elytro singiilo striis tribus suturam versus pimctisque duobus impresso et macula subapicali 

 parva rotundata valde distincta testace^ ornato, antennarum basi pedibusque testaceis. 



Long. covp. lin. \\-\l. 



Berribiditmi Lucasii, Duval, Ann. de la Soc. Ent. de France (2'^™« serie), x. 137 (1851). 



Habitat in bumidis Maderse, ad Sanctam Annam Maio exeunte a.d. 1850 copiose collectum; necnon 

 exemplar unicum etiam in Madera australi, prope urbem Funchalensem, el. Dom. Hear detexit : 

 in viciuitate aquarum desilientium prfedominat, nunc in luto sepultum, nunc per superficiem 

 velocissime cui-rens, — quapropter difficilius capiendum. 



B. larger than the last species, shining, dark greenish-black, and generally with a very obscure brassy 

 tinge. Prothorax short, subcordate, attenuated behind, nevertheless with the posterior angles 

 nearly right angles ; with an obscure dorsal channel ; and an impression on either side at the 

 base. Elytra ovate; with three deep striae on each towards the suture, the outer ones being 

 evanescent ; the strise not perceptibly punctured, the sutural one being the longest, and the 

 others successively shorter and abruptly terminated anteriorly ; with two impressed points on the 

 disk of each on the third, or outer stria ; each with a small, rounded, well-defined patch, behind 

 the apex, testaceous. Antenna at base, palpi and legs testaceous : the first rather longer than 

 those of the B. curvimanum, and more darkly iufuscate towards then- apex: the tivo anterior tibiae 

 just perceptibly bent inwards at a short distance from their extremity, though very much less so 

 than in the last species. 



The distinctions between the present species and the last have been ak-eady 

 pointed out. The B. I/iicasii is strictly a Mediterranean insect, having been 

 hitherto only recorded in Algeria and Spain. Although not rare, it is apparently 

 extremely local in Madeira, the only spot in. which I have observed it in any pro- 

 fusion being at Santa Anna, in the north of the island, where, during May and 

 June of 1850, I captured it in great abundance at the edges of the small stream 

 which crosses the pathway down to the sea, at about a thu-d of the distance, from 

 the Quinta of Senhor Louiz Acciaioly. On the southern side of the island I have 

 not as yet, myself, detected it ; but I possess a specimen, communicated to me by 

 Professor Heer of Zurich, collected diu'ing the winter of 1850-51 in the vicinity of 

 Funchal. 



59. Bembidium obtusum. 



B. subviridescenti-, vel subpicescenti-nigrum, prothorace subquadrato angulis posticis rotundato- 



L 2 



