226 HISTERIDA. 
ceteris (subhumerali excepta) obsoletis; propygidio pygidioque dense equalibus punctatis; prosterno 
strlis anticis approximatis, posticis divaricatis abbreviatis; mesosterno stria integra, grosse punctato ; 
tibiis anticis 6- vel 7-dénticulatis, posticis spinosis. Long. 23-3? millim. 
Hab. Mexico, Oaxaca (Hoge); Nicaragua, Chontales (Janson). 
Two examples. SS. gemmenus belongs to Marseul’s group 6. It is closely allied to 
the European S. specularis, from which it differs chiefly in the transverse smooth disc 
on the thorax, the clear (not rugose) punctuation of the upper surface, and the thickly 
punctured metasternum. ‘The clypeus also is narrower, and carinate laterally and in 
front. The sutural stria where it crosses the smooth scutellar space is punctiform. 
26. Saprinus conspectus. 
Saprinus conspectus, Mars. Monogr. in Ann. Soc. Ent. Fr. 1855, p. 708, t. 19. fig. 145°. 
Hab. Mexico, Cordova, Oaxaca (Hége), Vera Cruz}. 
Three examples. 
27. Saprinus dentipes. 
Saprinus dentipes, Mars. Monogr. in Ann. Soc. Ent. Fr. 1855, p. 728, t. 20. fig. 1607. 
Hab. Mexico 1, Oaxaca (Hage). 
One example. 
28. Saprinus bistrigifrons. 
Saprinus bistrigifrons, Mars. Monogr. in Ann. Soc. Ent. Fr. 1855, p- 729, t. 20. fig. 161°. 
Hab. Mexico 1.—Braziu, Ceara. 
The type of this species, which is in the Lewis collection, is much smaller than 
ordinary specimens from Ceara, where the insect is common. 
29. Saprinus discors. 
Saprinus discors, Lec. Proc. Acad. Phil. 1859, p. 815°. 
Hab. Mexico}. 
[Norze.—Gnathoncus rotundatus, Kugel, occurs in North and South America, but no 
example has yet been recorded from the Central Region. ] 
PACHYLOPUS. 
Pachylopus, Evichson, in Klug’s Jahrb. der Ins. 1834, p. 196. 
The type of this genus, P. dispar, came from the Cape of Good Hope ; three other 
species have since been added, all from North America; one of these latter is now 
known to extend southwards to Guatemala. 
