PIAZORRHINUS. 227 
surface and legs white. Head sparsely punctate, the eyes very large and narrowly separated ; rostrum 
very short and stout in the g, a little longer in the 9 , widening outwards, carinate and thickly punctate 
to about the middle and almost smooth at the tip; antenne short, the club ovate and about as long as 
joints 8-7 of the funiculus. Prothorax broader than long, subconical, slightly rounded at the sides, 
constricted in front, thickly punctate, the disc with a short median carina. Elytra much wider than 
the prothorax, subparallel in their basal half, the humeri broadly rounded ; deeply punctate-striate, the 
interstices rather convex, transversely rugose, and asperato-punctate. Legs short, the femora each with 
a minute tooth. 
Var. The prothorax seneons, the elytra cyaneous, the pubescence yellowish and a little more extended, the 
tibie in great part ferruginous. 
Length 14-21, breadth 1-13 millim. (¢ @.) 
Hab. Panama, Bugaba, Volcan de Chiriqui, Caldera (Champion). 
Numerous specimens of the form selected as typical, one only of the variety, the 
latter from Caldera. Amongst the various similarly coloured species, the present insect 
is easily recognizable by the very large eyes, and the U-shaped pubescent space on 
the elytra, this extending forwards along the sides of the prothorax. 
9. Piazorrhinus metallicus, sp.n. (Tab. XII. fig. 29.) 
Subovate, shining, the upper surface blue or bluish-green, the under surface black, the antenne in great part 
piceous, the tarsi rufo-testaceous; clothed with a few, widely scattered, short, greyish-white hairs, which 
in one specimen form a narrow, sinuous, transverse, median fascia on the elytra, the vestiture of the 
scutellum and under surface white. Head, rostrum, antennx, and prothorax as in P. cyanescens. Hlytra 
much wider than the prothorax, subparallel in their basal half, the humeri a little swollen ; with shallow, 
somewhat coarsely punctured striz, the interstices almost flat, punctulate, and transversely wrinkled. 
Femora each with a short, distinct tooth. 
Length 2-24, breadth 14 millim. (¢ @.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Three specimens, all somewhat abraded. ‘This is perhaps an extreme form of 
P. cyanescens, with the elytra less asperate than usual; the very scanty pubescence 
visible on the elytra, however, forms (in one example) a narrow, sinuous, transverse, 
median fascia, instead of covering a large U-shaped space. The allied P. splendens, 
Faust, from Venezuela, has the upper surface golden-green, and more polished than 
in P. metallicus, the pubescence arranged in a longitudinal vitta on the disc of each 
elytron, and the legs entirely testaceous. 
10. Piazorrhinus asperatus, sp. n. 
Subovate, robust, the head and prothorax dull, the elytra slightly shining, black, the tarsi and joints 2-7 of 
the funiculus rufo-testaceous, the rest of the antenns piceous ; clothed with a few, widely scattered, 
short, greyish-white hairs, which are arranged in an irregular ring on the disc of the elytra below the 
scutellum and in a transverse fascia thence to the outer margin. Head closely punctate, rugose between 
the eyes, which are moderately large and widely separated ; rostrum very stout, widening outwards, 
about twice the length of the eyes, rugosely punctured at the base, much smoother at the tip; antenne 
short, the club ovate and as long as joints 2-7 of the funiculus united. Prothorax convex, a little 
broader than long, subconical, slightly rounded at the sides, constricted in front, rugosely punctured, the 
disc carinate towards the base. Elytra much broader than the prothorax, convex, subparallel in their 
basal half, the humeri obliquely truncate in front and rounded externally ; deeply punctate-striate, the 
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