SPHALLENUM.—PERILASIUS. 
1. Sphallenum robustum. (Tab. IIL fig. 8.) _ 
Sphallenum robustum, Bates, Trans. Ent. Soc. 1872, p. 172. 
Hab. Nicaragua, Chontales (Belt). 
XESTIA. 
Xestia, Serv. Aun. Soc. Ent. Fr. 1834, p. 16. 
17 
Also confined in range to Tropical America. About a dozen species have been 
described ; and many others exist unpublished in collections. 
1. Xestia pilosovittata. (Tab. IIT. fig. 10.) 
Xestia pilosovittata, Bates, Trans. Ent. Soc. 1872, p. 172. 
Hab. Nicaragua, Chontales (Belt, Janson). 
2, Xestia nitida. (Tab. III. fig. 11.) 
Xestia nitida, Bates, Trans. Ent. Soc. 1872, p. 172. 
Hab. Nicaraeva, Chontales (Belt). 
3. Xestia sagittaria. (Tab. III. fig. 9.) 
Xestia sagittaria, Bates, Trans. Ent. Soc. 1872, p. 173. 
Hab. Nicaraeua, Chontales (Belt). 
GNAPHALODES. 
Gnaphalodes, Thoms. Class. Long. p. 235. 
The following is the only known species :— 
1, Gnaphalodes trachyderoides. 
Gnaphalodes trachyderotdes, Thoms. J. c. p. 236°. 
Hab. Nortu America, Texas (Leconte).—Mexico!; Nicaraeua, Chontales (Belt). 
PERILASIUS. 
Gen. Pantomallo affinis, at differt, inter alia, antennis sulcatis. Corpus elongatum, minus covexum, griseo 
pubescens. Caput antice breve, epistomate a fronte sulculo separato. Palpi (¢) maxillares elongati. 
Antenne (¢') corpore plusquam dimidio longiores, infra dense, supra sparsius hirsute; articulis 3°-11™ 
longitudine zequalibus, tertio robustiore supra late sulcato, sequentibus sulcis obsoletis, undecimo haud appen- 
diculato. Antenne ( 2 ) corpore paullo breviores, articulo tertio haud robustiore ; sulco obsoleto. Thorax 
elongato-subovatus, lateribus medio ( 3) inermibus, (2 ) breviter spinosis ; dorsum in utroque sexu tuber- 
culis nitidis tribus. lytra fere parallela, apice suturali spinoso; supra crebre punctulata punctisque 
sparsis nitidis inspersa. Pedes modice elongati, simplices; femora medio latiora; tarsi postici articulo 
primo sequentibus duobus eequali. Prosternum inter coxas arcuatum ; mesosternum latum, planum. 
In general form and most of the essential characters this new genus agrees with 
Pantomatlus; but it differs from that and all genera of the Hesperophanina group by 
its sulcate antenne. The sulci, however, are not distinct except on the third joint and 
in the males, in which sex this joint is also thicker from base to apex than the remain- 
BIOL. CENT.-AMER., Coleopt., Vol. V., Feb. 1880. d 
