472 COLEOPTERA. 
3975. Luperus quadricollis sp. nov. 
Elongate, nitid, aeneo-cyaneous, legs and antennae fuscous. 
Head nearly as broad as thoracic apex, not quite smooth. Thorax of 
about equal length and breadth, slightly convex, its sides finely margined, 
not quite straight, very feebly and evenly rounded, the base slightly curved 
towards the sides, with obtuse angles; disc distantly and finely yet quite- 
definitely punctate. Scutellum small, triangular. Elytra rather broader 
than thorax at the base, hardly four times its length, with broadly rounded 
apices, shoulders not prominent but scarcely at all narrowed or rounded ; 
they are moderately finely, closely, and rugosely punctured, less distinctly 
and closely near the shoulders, which are without any well-marked 
impressions. 
Antennae not reaching posterior femora, moderately slender, their 3rd 
joint short, hardly any longer than 2nd; joints 4-11 about equal. 
Legs moderately elongate, tibiae straight; basal joint of posterior 
tarsi as long as 2nd and 3rd. 
The small size, subquadrate, evenly convex thorax, different shoulders, 
less elongate and slender legs and tarsi, and somewhat abbreviated 3rd. 
antennal articulation, serve as good distinguishing characters. 
Length, 34mm.; breadth, 14 mm. 
Moa Basin. Another unique from Mr. T. Hall. 
3976. Luperus xenoscelis sp. nov. 
Subdepressed, moderately elongate and nitid; viridi-cyaneous, tibiae 
and basal half of antennae light fuscous, remaining joints and the femora 
darker. 
Head as broad, the large eyes inclusive, as front of thorax, with a few 
fine punctures just behind the eyes, and some fine hairs, antennal orbits 
slightly elevated. Thorax subquadrate, a little broader than long, its sides 
distinc tly marginate, nearly straight, only very slightly narrowed behind, 
front angles slightly incrassate, base slightly rounded near the sides so 
that its angles are not quite rectangular; dise without depressions, finely 
yet quite distinctly, moderately closely ‘but irregularly punctured, more 
distantly between the middle and sides, between many of these punctures 
there are a few minute ones. Scutellum small. Elytra thrice the length 
of thorax, rather broader than it is at the base, the shoulders scarcely at all, 
the apices broadly rounded ; their surface plane, suture simple, moderately 
closely and rather finely punctate, with very minutely sculptured inter- 
stices. 
Antennae extending to beyond intermediate femora, their 3rd joint 
scarcely any longer than the suboviform 2nd; joints 4-11 moderately 
elongate, each slightly narrowed towards the base. 
Legs moderately stout ; posterior tibiae below the middle, along their 
front face, distinctly curved and dilated, less so at the extremity; tarsi 
moderately thick. 
This must be placed after DL. insolitus (3668) and L. dilutipes (3780), 
in both of which the elytral suture is thickened and somewhat elevated, 
besides differing in minor details. The present species is differentiated 
from every other known to me by the peculiarly formed posterior tibiae. 
Length, 34-33 mm.; breadth, 14 mm. 
Moa Basin. Two examples, captured by Mr. T. Hall. 
