from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having the form of an axe or hatchet.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having the form of an ax or hatchet.
from The Century Dictionary and Cyclopedia
- Shaped like an ax or a hatchet; dolabriform.
- In entomology, subtriangular or trapezoidal and attached by one of the acute angles, as a joint or other part.
-- "Ears oval, with many distinct folds, naked except at the base; tragus securiform; fur thick, close, fuscous-black; or dark fuscous-brown above; beneath paler, except on the throat, the hairs being conspicuously tipped with grey, the upper hairs being all white at their base; face nude, and the membrane dark brownish-black" (_Jerdon_).
Megamerus "has an affinity to Sagra, but differs from that genus in having setiform antennae, porrect mandibles, and securiform palpi, its habit is also totally different, and more like that of some of those insects which belong to the heterogeneous magazine called Prionus; it is undoubtedly the most singular and novel form in Captain King's collection."
Body black; antennae piceous, dull honey-yellow towards the tip, distinctly compressed; — joints, in profile a little narrowed to the base; palpi piceous, not at all securiform, terminal joint less dilated at tip than tiiat of the preceding joint; thorax with a slight pearlaceous re - flection, rather narrower at tip than at base; lateral margin depressed,