HORN EXPEDITION—CARABID^. 
383 
describes O. /a/us as having the shoulders edentate, and the striie of the elytra 
finely punctulate. 
Phopticosomus hopni, n. sp. 
<? Oblong, robust, lightly convex ; prothorax transversely subcordate, wider 
across apex (5-8 mni.) than base (5'1 nun.), anteiaor and posterior angles obtuse ; 
elytra strongly striate, interstices flat, third unipunctate just above apical 
declivity, humeral angles obtuse. 
Dark piceous. Head large (4 mm. x 4'8 mm.), convex, swollen below eyes, 
minutely and sparsely punctulate; clypeal suture distinct; front widely impressed 
on each side, the centre of each impression punctiform just behind the end 
of clypeal suture; eyes small, not prominent. Prothorax smooth, transverse 
(4’7 mm. X 7'5 mm.), lightly narrowed to base, convex, declivous to base ; sides 
lightly rounded anteriorly, roundly and obliquely narrowed to base ; anterior 
margin lightly and widely emarginate; base truncate ; anterior angles widely 
rounded, hardly advanced ; basal angles rounded ; lateral margins wide, explanate, 
punctulate near basal angles ; border thick, reflexed on sides, entire on base, but 
hardly reflexed across peduncle; median line lightly impressed. Elytra broader 
than prothorax (12 mm. x 8'2 mm.), strongly declivous on sides and apex, lightly 
declivous on base ; sides subparallel; base widely truncate ; apical curve widely but 
decidedly sinuate on each side before apex ; striole at base of second interstice dis¬ 
tinct, elongate; border reflexed, most strongly so round humeral angles; basal 
boi’der curving forward from fourth stria to humeral angle ; ninth interstice with a 
row of large punctures, and a number of minute punctures interspersed among the 
larger ones, margin and apex of eighth interstice also minutely punctulate. Pro¬ 
sternum setose on base. Metasternum strongly punctate on each side near inter¬ 
mediate coxte. Ventral segments 3, 4, 5 setigero-punctate along anterior margin. 
Anterior coxie closely punctate on anterior side ; anterior tibiie wide at apex ; 
anterior tarsi narrow, not squamulose beneath; posterior femora long, not dilatate, 
a closely-set row of strong punctures extending for whole length of joint along lower 
margin of anterior side ; posterior trochanters with lower edge straight, and 
closely punctate for whole length, apex very widely and roundly subtruncate. 
Length, 20 mm.; breadth, 8'2 mm. 
Habitat .—Palm Creek. One specimen. 
The only described species to which I can compare Ph. hor7ii is Fh. gratidis. 
Castehi., a species which differs greatly in having the anterior angles of the 
