Atlantic Coleoptera. 217 
under the name of lwridus, and which, according to Mr. 
Crotch, is the one which obtains at the Azores: the two 
forms, however, as in Europe, fade off gradually into 
each other. The following diagnosis will suffice to in- 
augurate the species into our Atlantic catalogue. 
Stenolophus eaxiquus. 
S. oblongus, nitidus, nigro-piceus, prothorace obsolete 
dilutiore (7. e., paululum magis rufescenti); elytris leviter 
striatis ; antennis ad basin, palpis pedibusque piceo-testa- 
ceis, tibiis versus apicem plus minus evidenter obscuriori- 
bus. 
Long. corp. lin. circa 1%. 
Acupalpus exiqguus, Dej., Spec. iv. 456 (1829). Steno- 
lophus ewiquus, Daws., Geod. Brit. 161 (1854); Schaum, 
Nat. der Ins. Deutsch. i. 620 (1860). 
Variat colore dilutiore,—plus minus fusco-piceus, pro- 
thorace clarius rufescente, elytris in limbo et sutura 
sensim dilutioribus. 
Acupalpus luridus, Dej., loc. cit. 454 (1829). Stenolo- 
phus luridus, Daws., loc. cit. 160 (1854). Stenolophus 
exiguus var., Schaum, loc. cit. 620 (1860). Stenolophus 
luridus, Crotch, Proc. Zool. Soc. Lond. 369 (1868). 
Hab.—Maderensis (Mad.); inter folia dejecta ad S. Ant. 
da Serra a meipso, necnon olim a Dom. Bewicke, parce 
deprehensus. 
p. 52 (genus TRrEcHUS). 
After species 156, add :— 
Trechus debilis, n. sp. 
T. angustulo-oblongus, nitidiusculus, subdepressus, 
rufo-piceus, capite necnon elytrorum sutura (limboque 
versus apicem et humeros) obsolete dilutioribus; protho- 
race subquadrato, basi vix angustato; elytris oblongis, 
depressiusculis, profunde striatis; antennis pedibusque 
longiusculis, graciusculis, testaceis, illis et interdum tibis 
plus minus obscurioribus. 
