APHODIUS. 89 



finely crossed by small crenulating punctures ; (2) the equidistance near the apex of 

 striae 1-5 ; (3) the very fine punctuation of the disc of the thorax and of the elytral 

 interstices. 



The typical form here described is nearly black above, with a tawny spot on each 

 side of the head and at the apical angles of the thorax, and with tawny vittae on the 

 elytral interstices two, three, and four from the base, more or less abbreviated posteriorly, 

 a spot of the same colour on the shoulders, and sometimes a spot on the fourth inter- 

 stice towards the apex. The following are evidently colour races: — 



Yar. A. scotinus. Nigro-piceus, thoracis angulis anticis elytrorumque humeris fulvo-maculatis. 



Eab. Mexico, Cordova (Salle), Jalapa, Sayula, Tacambaro, Juquila (Edge). Several 

 examples. 



Bears the MS. name (now preoccupied for a described species) of A. anthrax, Deyr., 

 in the Salle collection. 



Var. A. chiriquinus. Fulvescens, thorace disco elytrisque lateribus et apice castaneo-fuscis. 



Hah. Panama, Volcan de Chiriqui (Champion). Several examples. 



An example from Costa Rica (Rogers) is exactly intermediate between this form and 

 A. guatemalensis, type. 



We figure a typical example from the Quiche Mountains. 



20. Aphodius charmionus. (Tab. VI. fig. 18.) 



A. guatemalensi proxime affinis : differt elyfcris flavo-testaceis, sutura, lateribus plagaque apicali (macula flava 

 apud interstitium 4 m includente) nigris ; capite thoraceque nigris, nitidis, crebrius sequaliter punctatis, illo 

 macula laterali, hoc macula humerali, rufo-testaceis ; elytris subtiliter crenato-striatis, interstitiis paullo 

 convexioribus fortiusque punctulatis ; pedibus testaceo-rufis. Elytrorum stria 5 a apice multo abbreviata. 



Long. 3| millim. 



Hab. Mexico, Jalapa (Edge). Many examples. 



21. Aphodius dimmutus. 



A. guatemalensi affinis. Glaber, nitidus, piceo-niger, capite thoraceque lateribus fulvo-testaceis, elytris castaneo- 

 rufis basi pallidioribus ; capite inermi, vix convexo, toto sequaliter punctulato, clypeo apice obtuse sub- 

 sinuatim truncato ; thorace sequaliter sat sparsim punctulato ; elytris subtiliter exarato-striatis, striis 

 minutissime vix crenato-punctatis, interstitiis paullo conyexis, punctulatis ; corpore subtus pedibusque piceo- 

 testaceis. Elytrorum strise sicut in A. guatemalensi, sed interstitiis paullo convexioribus striisque 4 a , 8 a et 

 5 a , 6 a ante apicem conjunctis. 



Long. 2|-3| millim. 



Hab. Guatemala, El Tumbador, Duefias, San Geronimo, Chiacam (Champion). 



22. Aphodius erythrinus. 



A. diminuto affinis et simillimus, sed certe differt thorace insequaliter punctato, punctis majoribus et minoribus 

 conspicue intermixtis. Differt autem elytris relative brevioribus, quam caput cum thorace paullo 



biol. centr.-amer., Coleopt., Vol. II. Pt. 2, September 1887. NN 



