392 SUPPLEMENT. 



16 (a). Aphodius constricticollis. (Tab. XXI V. fig. 11.) 



Elongato-oblongus, mediocriter convexus, piceo-niger, politus, pedibus rufo-piceis, anteimis tarsisque pallidioribus ; 

 capite lasvissimo, inermi, clypeo fere semicirculari apice vix perspicue truncato, genis parum prominentibus ; 

 tborax quadratus, post medium paullo constrictus, apud angulos posticos subrectos iterum paullulum 

 dilatatus, prope angulos anticos leviter angustatus, dorso subconvexo laevissimo, lateribus parce punctatis, 

 basi marginata ; scutellum mediocre ; elytra striata, striis subtilissime punctulatis, interstitiis paullulum 

 convexis ; tibiae anticas punctulatae. 



Long. 7 millim. 



Eab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 



The bristles at the apex of the posterior tibiae are unequal in a different way from 

 those of the species allied to A. rufipes and A. contaminatus, the great majority being 

 short, with a long one only at distant intervals. 



16 (b). Aphodius ? 



Hah. Mexico, Omilteme in Guerrero [H. H. Smith). 



A single specimen, discoloured ; extremely near A. euprosopus. 



17. Aphodius opisthius. 



Aphodius duplex, antea p. 87. 

 Aphodius opisthius, antea p. 92, note. 



24. Aphodius larrese. (A. bifrons, Tab. VI. fig. 20.) 

 Aphodius larrece, Horn, Trans. Am. Ent. Soc. xiv. p. 41 (February 1887) \ 

 Aphodius bifrons, antea p. 90 (September 1887). 



To the localities given, add : — North America, El Paso, Texas 1 . 



Dr. Horn recognized our A. bifrons, the types of which he saw on a recent visit to 

 England, as his A. larrece. 



24 (a). Aphodius omiltemius. 



A. mexicano et affinibus primo intuitu similis, sed valde differt genis haud productis. Paullo brevior, postice 

 leviter dilatatus, piceo-niger, capitis tboracisque limbis, anteimis, palpis et pedibus testaceo-rufis ; caput 

 inerme, vix perspicue punctulatum : clypeus semicircularis limbo explanato, margine antico obtusissime 

 truncato, prope genas nullo modo sinuato, bis subacutis sed baud productis ; thorax transversim quadratus, 

 a basi ad apicem subrecte et mediocriter angustatus, lateribus late biimpressis punctulatis, disco fere lsevi, 

 basi immarginata utrinque versus angulos posticos obtusos sed distinctos obliquata ; elytra subsericeo- 

 nitentia, sat profunde striata, striis parum conspicue punctulatis, interstitiis convexis ; tibiae posticse extus 

 carinis longe setosis, apice valde inaequaliter setosae ; tarsi elongati, graciles. 



Long. 5 millim. $ . 



Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 



The two examples appear to be females, and all the claws are simple. A. omiltemius 

 resembles the species of the A. mexieanus group in so many features that it ought 

 probably to be placed in it. It lacks, however, what von Harold considered 



