160 PHYTOPHAGA. 
OMOPLATA. 
Omoplata, Hope, Col. Man. iii. p. 159 (1840); Boheman, Monogr. Cassid. 11. p. 101. 
A Tropical-American genus containing about forty-five described species. Of the 
four Omoplate already recorded from within our limits, the three from Mexico (the 
types of which I have not seen) almost certainly belong to Physonota; one of these 
latter, O. calcarata, was, I have no doubt, subsequently redescribed by Boheman under 
Physonota, and it is here placed under that.genus. Two species of Omoplata, however, 
occur in the southern parts of our region, one, 0. quadristillata, Boh., being very like» 
Mesomphatia lebasi, Boh., an insect inhabiting the same districts, the other, O. tersa, 
Boh., ranging from Brazil to the State of Panama. 
1. Omoplata tersa. (Tab. VIL. fig. 24, 3.) 
Omoplata tersa, Boh. Monogr. Cassid. ii. p. 106", and iv. p. 2227; Cat. Col. Ins. Brit. Mus. ix. 
p- 87°. 
Hab. Panama, Bugaba (Champion).—Braziu 1~°. 
Five specimens from the State of Panama, agreeing with others from Brazil, and 
also with Boheman’s description. 
2. Omoplata quadristillata. (Tab. VII. fig. 25, ¢.) 
Omoplata quadristillata, Boh. Monogr. Cassid. iv. p. 226°. 
Hab. Nicaragua, Chontales (Belt, Janson); Costa Rica (Wagner, in Mus. Berol.' ; 
Van Patten). : 
I have seen six specimens of this species. Boheman described a female; the male 
has, as usual, sharper and more prominent humeri. A male from Chontales is figured. 
8. Omoplata albiventris. 
Omoplata albiventris, Boh. Monogr. Cassid. ii. p. 186", and iv. p. 225°; Cat. Col. Ins. Brit. Mus. 
ix. p. 90°. . 
“¢ Subrotundata, minus convexa, subnitida, flavo-testacea ; abdomine pallide flavo; prothorace supra sat crebre 
punctulato, medio lineola brevi, obsoleta, brunnea notato, lateribus postice utrinque citius rotundato ; 
elytris confertim, parum profunde punctatis, pone medium macula parva, obsoleta, dilute fusca; margine 
hyalino; humeris parum prominulis, antice subtruncatis.—Long. 10, lat. 9 millim.” 
Hab. Mexico 1-3, 
Boheman ! compares this species with his “ 0. maculiventris”: the only species of 
Cassididee described by him under this specific name is a Mexican Physonota. Apart 
from other characters, the genus Omoplata may be known from Physonota by the 
appendiculate claws. 
4, Omoplata maculicollis. 
Omoplata maculicollis, Boh. Monogr. Cassid. ii. p. 1387+, and iv. p. 2257; Cat. Col. Ins. Brit. Mus. 
ix. p. 90°. 
