384 SuHarp—On New Zealand Coleoptera. 
Catopsolius leevicollis, n. sp.—Ovalis, latus, subdepressus, niger, nitidus, anten- 
nis pedibusque rufis; prothorace amplo, levissimo; elytris fortiter regulariterque 
seriatim punctatis. Long.4m.m. (Plate x1, fig. 16.) 
Antennz longer than head and thorax; very slender; joints 3-6 very slender 
and elongate, almost similar in length and breadth; seventh joint perceptibly 
broader, and a little shorter, much longer than broad, eighth joit longer than 
broad, about as broad as the sixth; ninth, tenth, and terminal joints each longer 
than broad. Head smooth, shining, and impunctate. Thorax strongly transverse, 
a good deal narrowed in front, the front angles obtuse, the hind slightly acute 
owing to a slight sinuation of the base on each side. Scutellum rather large, 
triangular, impunctate. Elytra, each with nine very regular series of coarse punc- 
tures, the external of which touches the lateral margin. Legs very slender. 
Greymouth. Helms, No. 158. I have seen only two examples, and regret that I do not know the 
male. 
Fam. COLYDITD. 
HETERARGUS (nov. gen.) 
Oculi minuti; antennarum clava abrupte biarticulata; canalicula subocularis 
lata et profunda; pedes omnes sat distantes. 
The little imsect for which this new generic name is proposed is more nearly 
allied to Coxelus than to any other New Zealand form. The eyes, however, are 
quite rudimentary, and the minute ciliated prominence existing behind the eye in 
Coxelus is quite absent; the mentum is larger, and the front and middle coxee are 
slightly more distant; the last jomt of the maxillary palpus is more acuminate, 
and the basal joint of the antenna is not concealed, as it is in Coxelus. The meta- 
sternum, ventral segments, and legs are but little different from those of Coxelus. 
The only species yet discovered has the prosternum between the front coxee 
traversed by two deep depressions. 
Heterargus rudis, n. sp.—Fuscus, antennis pedibusque rufis; fere nudus pro- 
thorace fortiter transverso, Inzequali; elytris obsolete tuberculatis. Long. 2$ m.m. 
(Plate xu., fig. 17.) 
Antenne small, with short two-jointed club. Head with clypeus distinctly 
marked off and scarcely sculptured, with a small elevation over the insertion of each 
antenna. Thorax broad, the front angles but little prominent, the surface uneven, 
but very indefinitely sculptured, the lateral margins thick, obsoletely tuberculate 
seriate. Elytra rather short, with an obscure sculpture arranged longitudinally, 
consisting of series of very minute elevations, and with two or three interrupted 
series of larger, but still small, elevations. 
