258 Eustace W. Ferguson : 



Rostrum gently concave above, with a shalloAv median groove; 

 lateral margins subangulate in front, lowest at base; basal ridges 

 — intercristal and oblique — moderately distinct, basal foveae 

 rather shallow. Supraocular crests simple, very short, obtusely 

 pointed, projecting at right angles to the upper surface of head, 

 with no outward or backward tendency. Prothorax (4 x 5 mm.) 

 transverse; disc with subapical and sub-basal constrictions; median 

 tubercles relatively small, anterior pair larger, more elongate, sub- 

 cristiform, other tubercles not arranged in single line, middle 

 tubercles smaller, more outwardly placed, penultimate tubercles 

 rather larger, somewhat backwardly projecting; lateral tubercles 

 dentiform, broad at base, outwardly projecting, 2 large conjoined 

 tubercles anterior to middle, one posterior to middle, also a small 

 tubercle anterior to subapical constriction. Elytra (10 x G mm.) 

 subparallel, not greatly wider than prothorax. With three rows of 

 tubercles, the other interstices moderately coarsely granulate : first 

 row with nine tubercles, the basal ones small, rounded, the last 

 four spinose, becoming progressively larger; tubercles ending at 

 edge of declivity, two or three small spicules present on declivity, 

 the last subapical, larger, almost spines : second row with six 

 tubercles, the basal ones small, the last three larger, outwardly 

 projecting, and extending more posteriorly than the first row : 

 third row Avith five or six from shoulder to about middle, strong 

 outwardly-directed spines, the second somewhat larger than the 

 rest, the others subeqiial or decreasing slightly in size. Beneath 

 ■coarsely, rugosely punctate, the punctures longitudinally confluent. 

 Middle tibiae with strong subapical notch. 



? Somewhat more ovate, more convex beneath, intermediate 

 tibiae simple. 



Dimensio7is. — c? 16 x 6 mm. ; ? 16 x 7 mm. 



//a6. ^Victoria, Portland (J. E. Dixon). 



Described from a series of 9 specimens sent by Mr. J. E. Dixon ; 

 type in author's collection. Closely allied to Ac. dumosiis Bohem.. 

 of which I regard it as a geographical race or subspecies. It 

 'differs from specimens of Ac. duniosus from King George Sound in 

 (a) more parallel sided form, (b) shorter supraocular crests, (c) 

 rather larger prothoracic tubercles, (d) the presence of subapical 

 elytral spicules. These latter are smaller than in Ac. apicalix. from 

 whi<h species it also differs in the stronger elytral tubercles. 



