Atlantic Coleoptera. 223 
Verde archipelago. It doubtless possesses a wide 
African range; and I have already [Ann. Nat. Hist. vii. 
99] expressed my belief that Aubé was mistaken in 
treating it as a variety of the almost comopolitan JL. 
sticticus. 
Fam. HELOPHORIDA. 
p- 73 (genus OcCHTHEBIUS) . 
Before species 221, and commencing the genus, add :— 
Ochthebius algicola, n. sp. 
O. angustulus, elongatulo-oblongus, submetallico-niger, 
nitidulus, (nisi oculo fortissime armato) calvus; capite 
postice foveis binis punctiformibus impresso, leviter et 
confuse ruguloso- sed prothorace distinctius punctatis, 
hoe coleopteris subangustiore, postice paulo angustato 
sed haud pellucide (ut in Ochthebiis plurimis) marginato, 
tenuiter canaliculato, antice et postice levissime trans- 
versim impresso (impressione posticéd lunulati) ; elytris 
oblongis, dense et rugose striato-punctatis (prima facie 
quasi subasperato-crenulatis) ; antennis (clavi obscuriore 
excepta), palpis pedibusque piceo-testaceis. 
Long. corp. lin. vix. 1. 
Hab.—Maderenses (Mad.); inter Confervas marinas in 
aquis omnino salinis ad “Gorgulho,” haud procul ab 
urbe Funchalensi, tempore vernali A.D. 1870, a meipso 
detectus. 
The habits of this most interesting Ochthebius appear 
to be precisely similar to those of the Calobius Heeri,— 
two examples of it having been captured by myself, 
during our late sojourn in Madeira, from amongst marine 
Conferve, in pools of unadulterated sea-water left by the 
tide on the rocks (at the Gorgulho) to the westward of 
Funchal. Indeed at the time (never suspecting that any 
other species would possess the same very anomalous 
mode of life, and despite its wanting the long wiry legs 
and unsculptured surface of Calobius*) I actually mistook 
* In the recently published Catalogue of Gemminger and Harold, Calo- 
bius is cited as a synonym of Ochthebius, which can only be due to their 
total ignorance of its structural peculiarities,—the genus, although utterly 
distinct from them both, haying in reality more in common with Hydrena. 
