504 RHYNCHOPHORA. 
it, as already noted (anted, p. 444), in having the rostral canal deeper and closed 
behind by the raised walls of the mesosternum. Phyrdenus includes various forms 
placed by Schénherr under Cryptorrhynchus—C. divergens and C. muriceus, Germ., 
C. setiferus, C. diversus, and C. hispidus, Boh. Two of them are widely distributed. 
1. Phyrdenus divergens. (Tab. XXIV. figg. 27, 27 a, 0.) 
Cryptorhynchus divergens, Germ. Ins. Sp. Nov. p. 282'; Boh. in Schénh. Gen. Cure. iv. p. 146’. 
Phyrdenus undatus, Lec. Proc. Am. Phil. Soc. xv. p. 249°; Casey, Ann. N. York Acad. Sci. vi. 
pp. 457, 458 *. 
Cryptorhynchus undatus, De}. Cat. 3rd edit. p. 317°. 
Hab. Norta America, New York to Texas?4.—Mexico, Toxpam in Vera Cruz 
(Sallé), Tapachula (Hége) ; GuatemMaLa, San Gerdénimo (Champion), Chimaltenango 
(Conradt).—Brazi ! 2 5, 
We have six specimens of this species from within our limits. It differs from its 
allies in having the dense vestiture of the elytra broadly suffused with brown at the 
base and apex, and the intervening space brownish-white, the third interstice with a 
conspicuous oblique white streak at the base. The first ventral segment is very 
coarsely punctate. 
2. Phyrdenus muriceus. (Tab. XXIV. figg. 28, 28 a.) 
Cryptorhynchus muriceus, Germ. Ins. Sp. Nov. p. 2811; Boh. in Schénh. Gen. Cure. viii. 1, 
p. 3477, 
Phyrdenus bullatus, Casey, Ann. N. York Acad. Sci. vi. p. 458°. 
Hab. Nort America, Arizona?.—Mzxico, Durango city, Chilpancingo (Hoge), 
Matamoros Izucar, Puebla, Oaxaca (Sallé) ; Guatzmata, Coban (Conradt), Zapote, San 
Ger6nimo (Champion); Nicaragua, Chontales (Janson) ; Costa Rica (Van Patten).— 
Braziu 12, 
The thirteen specimens before me of this insect vary much in size (length 44-64, 
breadth 24-34 mm.). It is comparatively shorter and broader than P. setiferus ; the 
elytral vestiture is usually darker and the sete shorter; the groove on the disc of the 
prothorax is broader; and the first ventral segment (as noted by Capt. Casey) has 
scattered coarse punctures intermixed with the finer ones. P. budlatus was described 
from a single worn example. 
3. Phyrdenus setiferus. (Tab. XXIV. figg. 29, 29a.) 
Cryptorhynchus setiferus, Boh. in Schénh. Gen. Cure. viii. 1, p. 846°. 
Hab. Muxtco! (ex coll. Flohr), Tehuantepec (Sallé); Guatemana, Zapote ( Champion) ; 
Costa Rica, San José (Biolley). 
I have seen twelve specimens of this species from within our limits, eight of which 
