APHODIUS. 87 



Belongs to the same group as the preceding (Dr. Horn's Group K and Erichson's 

 Group N), from all the known species of which it differs by its deeper and coarser 

 sculpture. It also differs in the lesser inequality of the apical setae of the hind tibiae. 

 The setae are all short and at first sight appear equal, but on close examination of well- 

 preserved specimens a slight but distinct difference of length is evident. The reddish 

 spots on the reddish-brown elytra are ill-defined, but more distinct on some of the 

 interstices at the base ; in some examples the elytra appear vaguely tessellated 

 with red. 



16. Aphodius euprosopus. (Tab. VI. fig. 14.) 



A. inquinato (Fabr.) similis. Niger, nitidus, elytris glabris, flavo-testaceis, ruaculis oblongis discoidalibus et 

 plaga irregulari laterali nigris ; capite obsolete trituberculato, subtiliter sparsim punctulato, clypeo leviter 

 simiato et utrinque rotundato, macula utrinque laterali rufo-testaceo ; thorace sparsim aequaliter punctulato, 

 linea dorsali laevi, lateribus (praecipue antice) flavo-testaceis ; elytris crenulato-striatis, interstitiis planis, 

 sparsim, lateribus et apice densius, punctulatis, humeris acute dentatis ; pedibus subtus (tarsis apice) 

 pallide testaceis, femoribus medio nigris, bis conspicue punctatis. 



Long. 4-4| millim. 



Hab. Guatemala, Totonicapam, Quiclie Mountains (Champion). 



Belongs to a group numerously represented in the temperate and boreal regions of 

 the Old World and in North America, with which it disagrees only in the apical setae 

 of the hind tibiae being short and nearly equal in length ; the usual elongated setae are 

 wanting, though some are a little longer than the others. The base of the thorax is 

 finely margined. In the number and arrangement of the black elytral spots it agrees 

 best with A. inquinatus, but the discoidal spots are all detached and oblong-quadrate 

 in shape : there are two on each of the second and fourth interstices and one (posterior) 

 on the sixth, the lateral larger spot forming an irregular vitta anteriorly on the sixth 

 to the eighth. 



Our examples were captured at elevations of from 7000 to 10,500 feet. 



b. Base of the thorax not margined. 

 * Gence not prominent, obtuse. 



17. Aphodius duplex. (Tab. vi. fig. 15.) 



Quoad forniam et colores A. brasiliensi (Casteln.) similis, sed multo minor. Mediocriter convexus, glaber, 

 nitidus, luteo-testaceus, capite thoraceque medio castaneis, elytris utrinque prope apicem vittulis duabus 

 obliquis fuscis (vittam luteo-testaceam includente) suturaque fusca; capite inermi, aequaliter discrete 

 punctulato, clypeo antice subsinuatim truncate, genis parum prominentibus ; thorace toto punctulato, basi 

 utrinque obliquata, angulis obtusis sed distinctis ; elytris crenulato-striatis, interstitiis subplanis, punctu- 

 latis ; tibiis anticis extus ante dente3 serrulatis et supra punctatis, posticis cum tarsis gracilibus ; corpore 

 subtus castaneo-fusco, fere laevi, pedibus antennisque luteo-testaceis. Elytrorum strife 2 a et 3 a apice abbre- 

 viate ibique 3 a a 4 a valde distante, 4 a et 5 a approximatae. 



Long. 4 millim. 



Ilab. Mexico, Jacale, Juquila (Salle), Cerro de Plumas, Mexico city, Zacualtipan, 

 Jalapa, Huitzilac, Chilpancingo (Hoge) ; Costa Rica, Volcan de Irazu (Bogers). 



