92 [iMay, 



was to make known several species of genera associated by Ferte with the 

 Anthicites, such as Stereopalpus and Eurygenius ; but after an attentive study 

 of these genera, I 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. Ferte 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 Scydmaeni, 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 

 antennae, the prosternum in Scydmaenus is entirely separated from the lateral 

 infiexed portions of the thorax, while in Anthicus it is all in one piece. The 

 true afl[inities appear to be with the Pyrochroites, from which they are dis- 

 tinguished only by the form of the parapleurae, 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 antennae 

 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 : 



Coleopteraheteromera^ capite postice valde coarctatOj collo distinctissimo ; ocv- 

 lis integerrimisj lateralibus ; nnandihulis apice emarginatis ; ahdomine ft-articu' 

 lato, articulis liberis ; parapleitris triangularibic's ; coxis anticis contig%iis ; 

 tcnguihiLS simplicibus. 



The native genera are thus related : 



A. Antennae articulo llmo simplici. 

 Thorax cornutus ; tarsi articulo 4tf> bilobato . . . Notoxtjs. 

 Thorax simplex ; tarsi articulo 4to bilobato ; 



antennae moniliatae, femora incrassata . . Tomoderus. 

 Antennae non moniliatae ; humeri indistincti . Formicomus. 



humeri distincti . Anthicus. 



B. Antennae articulo llmo elongato, quasi diviso. 

 Thorax simplex ; articulo tarsorum 4to simplici . . Tanartiirus. 



Notoxus Geoffroy. ^ 



1. N. anchora, elongatus, testaceus, thorace globoso, cornu serrato, crista 

 sensim elevata, elytris valde punctatis, macula lateral!, fascia postica suturaque 

 nigris. Long. '\A. 



Hentz Journ. Ac. Nat. Nat. Sc. 5, 375, pi. 13, fig. 4 : La Ferte, Anthic. 33. 



Monocerus aiicliora "Lee. 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. 



Lee. An. Lye. 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. 



