_LOBIOPA. 321 
1. Lobiopa retusa, sp. n. (Tab. X. fig. 16.) 
Rotundato-ovalis, convexa, ferruginea, elytris flavis, in disco et ad apicem ferrugineis, ad basin piceo-maculatis ; 
prothorace anterius leviter declivo, ante medium obsolete tri-impresso. 
Long. 9 millim. 
Hab. Nicaracua, Chontales (Belt). 
Mandibles abruptly curved at the extremity. Thorax convex, with only a slight 
explanate portion at the lateral margin, sparingly punctate, depressed in front on the 
middle, and behind the depression with three feeble impressions. Llytra explanate at 
the sides, but not strongly, rather sparingly punctate, the serial setosity fine and scanty, 
the other pubescence very scanty; yellow in colour, with a dark mark behind the 
scutellum, some dark spots on each side near the base, and a common flammulate 
ferruginous mark on the disc, the extremity broadly ferruginous. Legs stout, the 
femora deeply sulcate for the reception of the tibie. Front tibie a little dilated at 
the apex, the tarsi rather less slender than in the other species of the genus, Pro- 
sternum deeply impressed along the middle. 
Of this very distinct species we have received only two badly preserved examples. 
The subretuse front of the thorax distinguishes it from all the other known members 
of the genus. 
2. Lobiopa undulata. 
Nitidula undulata, Say, Journ. Ac. Phil. v. p. 179°. 
Soronia undulata, Horn, Trans. Am. Ent. Soc. vii. p. 308°. 
Hab. Nortu America! 2,—Mexico, Northern Sonora (JJorrison). 
The two individuals found just within our northern boundary that I refer to this 
species differ from some of the varieties of L. decumana only in the eye, as seen on the 
underside of the head, being considerably narrower and less convex. 
L. setulosa, Lec. (nec Er.), has been united with L. undulata (Say), but perhaps may 
prove distinct ; it has not been detected within our limits. 
3. Lobiopa decumana. 
Lobiopa decumana, Er. in Germ. Zeitschr. iv. p. 295°. 
Hab. Mexico, Cuernavaca, Vera Cruz (Sallé), Cordova (Sallé, Hoge), Jalapa (Flohr, 
Hoge); British Hoypuras, R. Hondo, R. Sarstoon (Blancaneaux); GuaTEMALs, Pana- 
jachel, Zapote, Capetillo, San Gerénimo, Sabo, Panzos (Champion); Nicaragua, 
Chontales (Belt, Janson); Costa Rica, Cache (Rogers); Panama, Bugaba, Volcan de 
Chiriqui 3000 feet, Caldera, David, Taboga Island (Champion).—SovutH America, 
Demerara (Harper); ANTILLES, Cuba!. 
This species is common in our region, and is most variable in size, colour, pattern, 
and outline, but I am unable to find any constant character for specific division. 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, March 1890. 2 T* 
