OMALIDAE. 



19 



Head rather narrower than thorax, the sides of the forehead obUque, so 

 that the middle seems somewhat prominent ; it is distinctly and closely 

 punctate, but the forehead is smooth and shining in front ; there is a pair of 

 foveae at the base containing the ocelli. Antennae with joints 6-10 enlarged 

 and densely pubescent, Uth largest and oval, the basal cylindric, 3rd more 

 slender than 2nd and rather longer, 4th and 5th bead-hke and small. 

 Thorax transverse, wddest and rounded before the middle, gradually nar- 

 rowed behind, posterior angles rectangular but not acute, lateral margins 

 distinct ; its sculpture similar to that of the head. Scutellum smooth. 

 Elytra rather broader than thorax and twice its length, the suture depressed 

 near the base ; their sculpture rather coarser than that of the thorax but 

 not as close, and becoming finer towards the apices. Hind-hody sUghtly 

 longer than elytra, its basal 4 segments about equal, with raised margins ; 

 5th slightly longer ; 6th narrowed behind, minutely and densely sculptured, 

 and a little elevated along the middle ; 7th very narrow ; these last 2 much 

 paler than the others, w^hich are rather finely but not at all closely punctured ; 

 the sides of the 2nd, 3rd, and 4th are somewhat rufescent, on the middle of 

 the 2nd there is a pair of oblong greyish marks. Leys simple, slender. 



In facies similar to 0. micrarthrum, the pubescence less distinct, the 

 forehead different, elytral suture not elevated, basal abdominal segment 

 fully uncovered, lateral margins elevated instead of being flat. 



Length, If lines ; breadth, f line. 



Waimarino. A single specimen only. 



3045. Omalium laetipenne sp. nov. 



Elongate, subdepressed, moderately nitid ; the head, thorax, and basal 

 4 dorsal segments fusco-piceous ; the terminal 2 and apex of 4th rufo- 

 fuscous ; elytra shining, flavescent, their extremity and an ill-defined basal 

 patch fuscoiis ; legs, antennae, and palpi testaceous. 



Head gradually narrowed anteriorly, much and abruptly narrowed 

 behind the large and prominent eyes, irregularly strigose, appearing almost 

 smooth along the middle, but with a few fine scattered punctures. Thorax 

 subquadrate, its sides with very slender margins and nearly straight, ante- 

 rior angles rounded, the posterior obtuse yet nearly rectangular ; it is nearly 

 smooth along the middle, and at the outer sides of the 2 shallowMmpressions, 

 which, as well as the rest of the surface, are finely but not closely punctured, 

 near the basal margin there are 2 more distinct punctures. Scutellum small, 

 triangular. Elytra oblong, with separately rounded apices, very slightly 

 and gradually narrowed tow-ards the base, the lateral margins fine : their 

 punctation moderately fine, not close, subseriate, and appearing rather 

 closer on the dark apical area. Hind-hody hardly as long as the elytra, dis- 

 tinctly clothed with greyish hairs, the uncovered basal 3 segments with thick 

 raised margins, the 4th with fine rims and more finely sculptured ; there is a 

 small median spot on the first exposed segment— the true second, no doubt 

 — which is minutely granulate. Legs moderately elongate. Tibiae finely 

 spinose. Tarsi with slender yellow setae, their last joint longer than the 

 preceding 4 taken together. 



Antennae pubescent ; basal joiiit stout and elongate, narrowed towards 

 the base ; 2nd longer than broad, yet evidently shorter than the following 

 one ; 4th and 5th small, about equal ; 6-11 enlarged and more densely 

 pubescent; 7-9 subquadrate ; 10th transverse ; 11th conical. 

 The ocelli are situated within the elongate foveae. 



