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291 . 
ENICOCERUS GIBSONI. 
Order Coleoptera. Fam. Helophoridae Leach . 
Type of the Genus , Enicocerus Gibson i Curt. 
Enicocerus Steph. — Hydrsenar Alir. 
Antennce inserted before the eyes, as long as the head, 1 1 ?- 
jointed, basal joint very long and curved, geniculated at the base, 
2nd large obovate-truncate, 3rd and 4th very obscure, 5th and 
6th minute, the remainder more robust, pubescent, the 7th being 
oblong, 8th and 9th turbinate, 10th and 11th larger, the former 
cup-shaped, the latter suborbicular (6). 
Labrum exserted, semiorbicular, ciliated with short stout bristles, 
the anterior margin deeply notched in the middle (1). 
Mandibles subtrigonate, horny externally, with an internal mem- 
branous margin, the apex bent and acute, with a slender tooth 
below (2). ' 
Maxillce terminated by a narrow lobe, with a broader ciliated one 
on the inside, furnished with 2 or 3 blunt teeth at the apex. 
Palpi 4-jointed, basal joint minute, 2nd and 3rd of equal length, 
the former clavate, the latter subovate, 4th small papillseform (3). 
Mentum cup-shaped, the angles slightly lobed. Labium large, 
subtrigonate-truncate, slightly emarginate, with 2 or 3 curved 
bristles on each side. Palpi very obscure (4). 
Head elongated , subtrigonate at the base. Eyes lateral and very pro- 
minent. Thorax subcor date-truncate, broader than the head. Scu- 
tellum none. Elytra much broader than the thorax and oval. Wings 
twice as long as the elytra, the inferior margin ciliated. Legs rather 
slender. Tibiae simple, furnished with small spurs. Tarsi 4 -jointed, 
3 first joints small , 4th large , clavate. Claws simple (5). 
Gibsoni Smith MSS. 
Black, more or less aeneous. Antennae oehreous, fuscous at the 
apex. Palpi piceous. Head and thorax sparingly punctured, 
the former with two oblique foveae, meeting at the back part of the 
head. Thorax with the tips of the anterior angles and the lateral 
margin towards the posterior angles diaphanous ; a strong chan- 
nel down the centre, six foveolets near the anterior margin and 
a longitudinal groove forming the anterior lobes, and a large 
oval and oblique fovea on each side towards the base. Elytra 
with 10 deep, punctured striae on each, the alternate interstices 
slightly elevated. Legs ferruginous. Tarsi tips of tibiae and 
thighs black. 
In the Author's and other Cabinets. 
The more elongated head and conspicuous notched upper lip, 
as well as the thorax, which is narrowed behind, and the con- 
