18 - RHYNCHOPHORA. 
13. Piazurus alternans. (Tab. II. figg. 3, 34a, 2.) 
Piazurus alternans, Kirsch, Berl. ent. Zeitschr. 1875, p. 201'; Heller, Stett. ent. Zeit. 1906, 
p. 347. 
Hab. Nicaraeva, Chontales (Janson) ; Panama, Bugaba, Volcan de Chiriqui (Cham- 
pton).—Braziu (coll. Fry); Prrut. 
A common insect in Chiriqui, and varying greatly in size (length 3-65 mm.). 
Dr. Heller has been kind enough to compare one of our specimens with the Peruvian’ 
type in the Dresden Museum. PP. alternans may be known by its subovate form and 
the convex, fulvo-tessellate alternate elytral interstices, the third swollen below the 
base. The eyes are narrowly separated; the second joint of the funiculus is about 
twice as long as the third; the ventral segments are alutaceous, the second excavate 
down the middle in the male, and the first suture is strongly sinuate. ‘Two examples 
have a pale patch on each side of the prothorax at the base. 
14. Piazurus condyliatus. (Tab. II. figg. 4, 4a.) 
Piazurus condyliatus, Boh. in Schénh. Gen. Cure. iv. p. 678". 
Piazurus (Pseudopinarus*) condyliatus, Heller, Stett. ent. Zeit. 1906, p. 34. 
Hab. Mexico, Toxpam in Vera Cruz (Sallé), Cerro de Plumas (Hége); GUATEMALA, - 
Chacoj and Tamahu in Vera Paz (Champion); Panama, Bugaba, Volcan de Chiriqui, 
Caldera (Champion). 
A common insect in Chiriqui. Recognizable by its small size (length 5-62 mm.), the 
very elongate second joint of the funiculus, the setigerous granules on the elytra, and 
the two swollen oblong prominences on the third interstice. The head has a circular 
flattened space on the vertex. The sides of the prothorax are parallel at the base. 
‘The ventral surface is densely punctate and squamose, and the first segment is 
unimpressed. 
15. Piazurus rana. (Tab. II. figg. 5, 5a.) 
Piazurus (Pseudopinarus*) rana, Heller, Stett. ent. Zeit. 1906, pp. 34, 41’. 
Hab. Mexico (ea coll. Flohr), Toxpam in Vera Cruz (Sallé) ; Costa Rica, San Carlos 
(Mus. Dresden '). 
The type of this species has been communicated by Dr. Heller, and we have four 
specimens from Mexico agreeing with it. P.rana is very like P. condyliatus, but 
larger ; the second joint of the funiculus is nearly three times as long as the third: 
the prothorax has a large, compressed prominence on the middle of the disc and a 
small tubercle on each side in a line with it; the elytra are subquadrate, and the 
second oblong prominence on the third interstice is wanting. ‘he first ventral 
* In Dr. Heller's table the names Pseudopiazurus and Pseudopinarus are transposed on p. 34, 
