320 NITIDULIDZA. 
elevated, and at the same time the serial punctuation is less distinct. Our figure is 
taken from a specimen of this kind. 
3. Perilopa placida, sp. n. (Tab. X. fig. 15.) 
Subelliptica, ferruginea, depressa, breviter setulosa, subopaca; elytris seriebus omnino regularibus punctorum 
majorum, interstitiis regulariter confertim setosis, ad apicem magis elevatis. 
Long. 34 millim. 
Hab. Guatemaa, San Gerénimo, Chiacam (Champion); Panama, Volcan de Chiriqui, 
Caldera, David (Champion). 
Thorax deeply emarginate in front, densely sculptured, but with the sculpture 
shallow and very indistinct. Elytra with perfectly regular series of closely placed 
shallow punctures, these punctures large and each perfectly circular; the interstices 
are broad, and each bears a quite regular series of short recurved sete; the four or five 
interstices next the suture are each at the extremity a little compressed and elevated 
so as to be subcarinate. Axillary line of the metasternum very definite. 
We have received seven examples of this species. It varies in colour from ferruginous 
to black. It is extremely similar to P. peltidea, Er.; but in that South-American insect 
the serial punctures are rather larger and deeper, and are so closely placed that behind 
the middle of the elytra they are, as it were, compressed and no longer round, but with 
the front part of each puncture indistinct. 
LOBIOPA. 
Lobiopa, Erichson, in Germar’s Zeitschr. iv. p. 291 (1843)’. 
Soronia (pars), Reitter, Verh. Ver. Briinn, xii. 1, p. 46°; Horn, Trans. Am. Ent. Soc. vii. p. 306. 
Lobiopa has been united with Soronta by Reitter? and Horn, but I think incorrectly 
so. ‘The distinction between the two in the structure of the antennary grooves, though 
not great, is undoubted, and quite sufficient for their separation; but there exists, in 
addition, another character, viz. that in Lobtopa the epipleure of the elytra do not 
extend round the apex, while in Soronia they are continued at the tip to the suture. 
Amphotis and Phenolia, which were established by Erichson, are also, I think, good 
genera, though Horn has united the one, Reitter the other, with Soronia. 
Lobiopa, as limited by Erichson, is peculiar to the New World, ranging from North 
America to Brazil and including the Antilles. The number of species is quite uncertain, 
as the specific limits are not easy to ascertain, the attempt to do so having indeed been 
as yet scarcely made. About twenty species have been described; only one is at 
present recognized as North American, but it is doubtful whether there are not 
more there. 
