200 ON THE CAREXIDES (FAM. CARABID^E), 



elytra chalybeous with purple reflections; prothorax with pale 

 bluish margins, sides of disc flushed with purple. 



Head transverse (3 -5 x 5-3 mm.), depressed; frontal sulci short, 

 subparallel ; clypeus with median part truncate, intermediate^ 

 angles prominent, anterior margin of wings oblique; preocular 

 sulcus short, wide ; preocular process small, prominent ; eyes 

 convex, not prominent, deeply embedded in orbits posteriorly; 

 postocular part of orbits defined above and below by a strong 

 sulcus and sloping gently to head; one supraorbital puncture on 

 each side. Prothorax transverse (4'5 x 7 mm.), convex ; sides 

 rounded, strongly and roundly narrowed anteriorly ; posterior 

 angles rounded (lightly marked) ; anterior angles lightly and 

 obtusely advanced; middle of base rounded, a wide light sinuosity 

 on each side of basal lobe; border reflexed (slightly more so at 

 posterior angles) ; lateral channel wide ; median line lightly 

 impressed; two marginal punctures on each side. Elj'tra ovate 

 (11 X 7'7 mm.), convex; sides rounded; border reflexed, lightly 

 and widely upturned at humeral angles; about four punctures on 

 basal declivity of each elytron. Legs light. 



Length 17-23, breadth 6'3-8"4mm. (Type 21 mm. in length). 



JIab. — Nullabor Plains (near Eucla). Given to me by Mr. 

 C. French. 



Allied to C. rugatum, Blkb., of which I had formerly regarded 

 it as a variety, but now consider it distinct on account of its 

 metallic colour and apparently wider form. C. sulcaticeps and 

 its allies seem to vary greatly in colour and facies, in this 

 resembling C. Ictivigatum, Macl., and its allies. I am puzzled 

 among the specimens before me, and evidently it will only be 

 possible to arrive at definite conclusions as to which forms con- 

 stitute species, and which varieties, after the range and constancy 

 of each form has been determined by collecting widely in South- 

 west Australia and carefully recording the localities of specimens. 



The type of C. sulcaticeps (9) has the elytra convex, with the 

 suture not placed in a channel; another specimen (9) is wider 

 and more robust and has the suture placed in a light channel on 

 the disc; a third specimen (sex undetermined) has the suture 



