106 SUBANTARCTIC IHLAND.S OF XEW ZEALAND. [Ciilniij/ini. 



Group HELOPIDAE. 

 PsEUDHELOPS, Gueriii. 



Mentum trapeziform, convex along the middle. Li(/ul(i subtriangular, widest 

 and truncate in front. Labial palpi very short, terminal articulation oblong, truncate 

 at apex ; the maxillary more elongate, their last joint broad, concave and obliquely 

 truncate at the extremity, so that the inner side is obviously shorter than the outer. 

 Mandibles bifid at apex. Byes very transverse, somewhat prolonged below the head, 

 distinctly faceted, not perceptibly emarginate in front. Antenmie attaining base of 

 thorax ; basal joint stout, its uncovered portion of about the same length as the 

 short 2nd; 3rd usually evidently longer than 4th; joints 5-7 about equal to one 

 another; 8-10 obconical, and rather broader than the preceding; 11th subovate, 

 longer than its predecessor. Thorax closely adapted to elytra at the base, which is 

 feebly bisinuate, quite or very nearly truncate at apex. Scutellum small, rounded 

 behind. Eli/(nt oblong, much narrowed behind, very slightly wider than the thorax 

 at the base. Legs moderately elongate. Tibiae simple, with small apical spines. 

 Tarsi fihform, with fine yellow setae underneath ; basal 4 joints of the 2 front pairs, 

 taken together, no longer or more dilated than the terminal one ; basal joint of the 

 posterior elongate, 2nd and 3rd each longer than broad, all 3 combined hardly longer 

 than the 4th. Prosternal process broad, truncate at apex, prolonged beyond the 

 coxae, nearly horizontal, broadly depressed along the middle. Ventral segments 1-4 

 decrease in length, oth subtrigonal. 



The above does not exactly correspond with the description given in Lacor- 

 daire's work in some respects, but exhibits the structural characters just as I find 

 them existing in the typical species described hereunder. 



Pseudhelops tuberculatus, Guerin. 



Bndij apparently glabrous, ovate-oblong, moderately convex, slightly nitid ; 

 head and thorax generally aeneo-niger, elytra more obviously bronzed, legs piceo- 

 rufous, antennae and tarsi rufous. 



Head short, of the same width, eyes included, as apex of thorax. Cli/peus 

 obliquely narrowed towards the front, where it is deflexed and truncate. Lahrani 

 transverse, red, and bearing erect yellow setae ; the punctuation of the head distinct 

 though moderately fine, becoming rather closer and finer near the antennal orbits 

 and on the forehead. Eyes convex and j)i'ominent. Thorax finely margined laterally, 

 its sides gently rounded, more narrowed in front than behind, rather wider behind 

 the middle than it is elsewhere, just one-fifth broader than long, posterior angles 

 slightly obtuse yet nearly rectangular and resting on the base of elytra, anterior 

 angles not prominent and barely reaching the eyes ; its punctuation rather finer 

 and closer than that of the head. Elytra, a little, yet quite appreciably, wider near 

 the hind thighs than elsewhere, in some specimens this slight dilation is hardly notice- 

 able, the sides being slightly rounded, but they are evidently obliquely narrowed 

 behind ; their whole surface is finely and irregularly punctured, and on some parts 

 feebly rugose ; each elytron has 8 series of punctures some a little larger than others, 

 none very close, and hardly forming distinct striae, all become indistinct near the 

 base ; at each side on the summit of the hind slope there are 3 nodosities, and just 

 below the outermost one the external interstice, which is convex, ends abruptly, 

 so that there seems to be a fourth nodiform elevation at that point. The legs bear 



