554 STAPHYLINID 2. 
DACNOCHILUS. 
Dacnochilus, Leconte, New Sp. N. Am. Col. part 1, p. 47 (1863); Solsky, Hor. Soc. Ent. Ross. v. 
p. 142, t. 4. 
This, apparently, is a Central-American genus, whose only species extends its range 
to the Southern States of the North-American Union. 
The genus belongs to the division in which the prosternum above the coxe is not 
prolonged ; it should be placed near Aderocharis. ‘The mandibles have each, about the 
middle, two rather long definite teeth. 
1. Dacnochilus letus. (Tab. XIV. fig. 12.) 
Dacnochilus letus, Lec. loc. cit. p. 47°. 
Hab. Nort America, South Carolina, Louisiana! (coll. Chevrolat).—MeExico (Tru- 
qui), Jalapa (Flohr, Hoge), Cuantla, Yautepec (Flohr), Cordova (Sailé), Tehuacan, 
Cerro de Plumas (Hége); Guatemana, Duefas, Capetillo, Pantaleon, Panajachel 
5000 feet, San Gerénimo (Champion). 
Leconte, trusting to his memory when in Europe, identified his species with the 
Colombian Lithocharis angularis, Er., and published this identification in the Ann. & 
Mag. N. H. ser. 4, vi. p. 403; this, however, was quite erroneous, as will be readily 
seen by comparing the two descriptions. The extent of the black colour on the basal 
portion of the elytra varies a great deal; our figure represents an example from 
Capetillo in which the black colour is rather more extended than it usually is. 
ACALOPH ZENA. 
Calophena, Arribalzaga, Bol. Ac. Arg. vii. p. 267 (1884) (nec Klug). 
This genus is distinguished from Dacnochilus not only by the spinose labrum, but 
also by the fact that the mandibles are thickened near the basal portion, and this 
thick part is minutely serrate or dentate; in this particular the structure does not 
quite agree with the description of Arribdlzaga; but as I find, on comparison of several 
species, that this character is subject to some variation, I do not look upon the discre- 
pancy as of much importance. The genus will include Lithocharis macularis and 
L. angularis, Ey., and L. polita, L. pagana, L. germana, aud L. picta, Sharp, in addition 
to Arribalzaga’s typical species from Buenos Ayres. With this latter I am not 
acquainted ; it is said to be termitupnilous in its habits. Mr. Champion informs me 
that 4. angularis is often found under stones. 
Although of wide distribution in the New World, the genus has not yet occurred 
further north than Mexico. 
As the name proposed by Sefior Arribdlzaga is already in use in Coleoptera, I have 
made a change in it. 
