MADEIRAN COLEOPTERA. 21 
60. Trechus cautus. 
Trechus cautus, Woll., Ins. Mad. 70 (1854). 
Inhabits the mountains of Porto Santo, occurring beneath stones 
on the open grassy slopes,—principally of the highest elevations. 
Rare. 
Genus 24. THALASSOPHILUS. 
Wollaston, Ins. Mad, 71. tab. ii. fig. 5 (1854). 
61. Thalassophilus Whitei. 
Thalassophilus Whitei, Woll., Ins. Mad. 71. tab. ii. fig. 5 (1854). 
Inhabits Madeira and Porto Santo, occurring beneath shingle (espe- 
cially in brackish spots) at the mouths of the streams. Exceedingly 
rare. 
(Subfam. V. BEMBIDIADES.) 
Genus 25. BEMBIDIUM. 
Latreille, Gen. Crust. et Ins. i. 183 [ script. Bembidion] (1806). 
(Subgenus Tachys, Ziegl.) 
62, Bembidium Fockii. 
B. oyatum rufo-testaeeum, prothorace subquadrato convexo, elytris 
ventricosis dorso fortiter punctato-striatis, striis exterioribus obso- 
letis, antennis pedibusque pallido-testaceis. 
Long. corp. lin. 14. 
Bembidium Fockii, Hwmmel, Ess. Ent. ii. 27 (1822). 
bisulcatum, Nicolai, Col. Hal. {teste Cat. de Stettin, 1849 | (1822). 
Trechus latipennis, Sturm, Deutsch. Fra, vi. 95. tab. 152. f. € (1825). 
Bembidium silaceum, Dej., Spec. des Col. y. 50 (1831). 
Guerinil, Gaubil, in Rev. Zool. 342 (1844). 
Numidicum, Lweas, Col. de [ Algérie, 79. pl. 10. f. 3 (1849). 
Fockii, Duval, Ann. de la Soc. Ent. de France (2®me série), x. 
189 (1852). 
— — , Leon Fairm., Faun. Ent. Frang. (Col.) 155 (1854). 




B. ovate, shining, and rufo-testaceous. Prothoraw convex, subqua- 
drate and a little narrowed behind; much narrower than the 
elytra; very distinctly margined at the sides, especially towards 
the posterior angles,—which are a good deal raised, and somewhat 
acute (or prominent). Hlytra rather ventricose, and widest a little 
behind the middle: each with a strongly punctured, deep, and 
entire stria close to the suture, and with three more,—well marked 
towards the base, but gradually shorter posteriorly; the outer 
ones obsolete: the recurved portion (at the apex) of the sutural 
stria very deep and sinuated. Antenne and legs pale-testaceous. 
