BY ARTHUR M. LEA. 3U9 



CORYLOPHIDAE. 



Aphanocephalus potamophilds, n. sp. 



Dull reddish-castaneous ; legs, antennae and palpi paler, part of elytra in- 

 fuscated. Rather densely clothed witli pale, short, semi-trect pubescence. 



Head with dense, partially concealed punctures. Prothora.r almost four 

 times as wide as the median lenjrth, sides strouuly rounded and finely margined, 

 apex gently incurved to middle and about half the width of ba,se; with small, 

 dense, partially concealed punctures. Eli/tra with outlines and margins con- 

 tinuous witli those of protliorax ; with small, dense, partially concealed punc- 

 tures. U)ider surface with rather small but sharply defined punctures, smaller 

 in middle of metasternum than elsewhere. Length, 2-2.2.5 mm. 



Halt. — North Western Australia: Ujjper Ord River (K. Helms). 



An oblong-elliptic species, olitained in a))undance at the water's edge. It is 

 larger, wider and with smaller and denser punctures than A. punctulatus; placed 

 side by side the punctures on the elytra of the present species are only about 

 half the size of those of that species. The infuscation of the elytra consists of 

 a large, median spot, varying considerably in size, but apparently never sharply 

 defined. ITnder a comjiound jjower the ))asal joint of the antennae appears 

 fairly stout, third .'^lightly longer than fourth, distinctly longer than second, and 

 slightly shorter than first, seventh and eightli rather short, and ninth a.s a stout 

 onc-.joinfed club, about as long as the four preceding combined. 



ApiIAyOCEPHALUS PALLIDIPENNIS, n. sp. 



Pale reddish-castaneous ; leg-s, antennae (club excepted) and palpi some- 

 what paler, hea<l and protliorax blackish or deeply infuscated, sides of the latter 

 obscurely diluted with red. Densely clothed with short, pale, depressed ]iubes- 

 eenee. Length, 1.6 mm. 



7/06.— Queensland : Cairns (C. J. Wild), Little Mulgrave River (H. Hacker). 



The description of the sculpture of the preceding species applies exactly 

 to the jiresent ime, but the latter is nuich smaller, diffei-cntly coloured and with 

 different clothing; on the elytra the imbescence has a slightly mottled appear- 

 ance, and from one direction on the right seems condensed so as to form a pale 

 S (revereed on the left elytron). The size and shape are much as those of A. 

 poropterus, but the elytra are reddish and witli much less conspicuims punc- 

 tures; the curious undulations of the clothing, to n cei'tain extent, suggest the 

 ba-sal markings of that species. 



APHAXOCEPlIALfS QUADRIilACTLATUS, U. sp. 



Black or blackish, parts of appendages obscurely paler; elytra with four, 

 fairly large, round, red spots, ("lotlied with very short, inconspicuous pubescence. 

 Length, 2 mm. 



JIab. — Queensland: Hamilton (C. J. Wild). 



Slightly more elliptic than A. potamophilus, with ])rothorax «ider at apex 

 and punctures less concealed by clothing; the elytral spots are placed as it 

 marking the corners of a square: two at the basal third and two at the apical 

 third; it is larger than A. quadriiiotatus, and the spots are (|uite round, without 

 showing a tendency to become confluent; structurally it is nearer .1. himatulatug. 

 One of the specimens has the whole of the under surface obscurely brownish. 



