92 [May, 
was to make known several species of genera associated by Ferté with the 
Anthicites, such as Stereopalpus and Eurygenius; but after an attentive study 
of these genera, | became convinced that they, as well as Macratria,* must be 
removed from this group altogether. ‘The two first must be placed among the 
Pyrochroites, a synopsis of which will shortly appear. Having also increased 
this family by one very distinct genus, I thought that it would be useful to bring 
together the descriptions that are now scattered in several works, into the form 
of a synopsis, so that the species being placed in a natural relation with each 
other, the characters of each might become more obvious. It is remarkable 
that of all the indigenous species, only one (Notoxus monodon) should be com- 
mon to both sides of the continent. Anthicus floralis, found both here and in 
Europe, is most probably introduced in articles of commerce. Ferté mentions 
its occurrence also in California. 
With regard to the affinities of this group I can say but little. Some authors 
imagine that there exists a relation between them and the Scydmeni, which, 
however, appears rather a resemblance of form, for a certain manner of life, 
than a true affinity; for besides the differences in the palpi and insertion of the 
antennez, the prosternum in Scydmenus is entirely separated from the lateral 
inflexed portions of the thorax, while in Anthicus it is all in one piece. The 
true affinities appear to be with the Pyrochroites, from which they are dis- 
tinguished only by the form of the parapleure, which in Anthicus are triangular, 
and in Pyrochroites parallel. Other differences are in the neck of Pyrochroites 
being less narrow and not so distinctly separated as in Anthicus; in the antenne 
being inserted in front of, and very close to the eyes, which are large and more 
or less emarginate, extending far on the under surface of the head, and frequent- 
ly almost uniting on the vertex. 
The diagnosis of the present tribe will then be: 
Coleoptera heteromera, captte postice valde coarctato, collo distinctissimo ; oct- 
lis ientegerrimis, lateralibus ; mandibulis apice emarginatis ; abdomine 5-articu- 
lato, articulis liberis; parapleuris triangularibus ; coxis anticts contiguis ; 
unguibus simplicibus. 
The native genera are thus related: 
A. Antenne articulo 11me simplici. 
Thorax cornutus; tarsi articulo 4to bilobato : 5 . Noroxus. 
Thorax simplex; tarsi articulo 4to bilobato; 
antenne moniliate, femora incrassata . . ‘TomMopERUS. 
Antenne non moniliate; humeri indistincti . Formicomus. 
humeri distincti . ANTHICUS. 
B. Antenne articulo 11™° elongato, quasi diviso. 
Thorax simplex; articulo tarsorum 4to simplici 5 . TanarTHRUS. 
Notoxus Geoffroy. 
1. N.anchora, elongatus, testaceus, thorace globoso, cornu serrato, crista 
sensim elevata, elytris valde punctatis, macula laterali, fascia postica suturaque 
nigris. Long. -14. : 
Hentz Journ. Ac. Nat. Nat. Sc. 5, 375, pl. 13, fig. 4: La Ferté, Anthic. 33. 
Monocerus anchora Lec. Journ. Ac. Nat. Sc. New. Ser. 1, 89. 
Lake Superior, Pennsylvania, Georgia, Ohio and Missouri Territory: the lateral 
spot is sometimes wanting; the horn is rounded at the apex and serrate, the crest 
rises gradually, is margined on the sides but not at the apex. The male has the 
apex of the elytra truncate. 
2. N. conformis, elongatus, testaceo-fuscus, thorace globoso, cornu 
elongato, crista subito paulo elevata, elytris parce punctatis, maculis utrinque 2 
ante medium, fascia que postica nigris. Long. -13. 
Lec. An.-Lyc. 5, 152. 
One specimen, found on the Gila. The thorax is globose, not transverse, the 
horns margined, not serrate; the crest is broad, rises suddenly but slightly, and 
* There is no reason why this genus should not be associated with Scraptia. 
