188 
REPORT ON ZOOLOGY, MDCCCXLIl : 
new species ; lividus, 01. ; lineolatus, 111, ; 'tnelanostictus, ScMpp., Schm.; 
inquinatus, F. ; pictus, St. ; tessulatus, Cr. ; sticticus, Pz. ; consputus, 
Cr. ; 4:-guttatus, Hbt. ; sericatus, Zgl. ; obscurus, F. ; porcus, F. In 
the two following genera (7 and 8) the clypeus is little if at all dilated 
laterally. 7. Acrossus; clypeus semicircular, posterior border of the 
prothorax, at least in the middle, not marginated; A. discus, Jur. ; 
Tujipes, L. ; luridus, F. ; depressus, Kug. ; Pecari, F. 8. Melinopterus ; 
clypeus semihexagonal ; A. prodromus, Brahm. ; ohliteratus, Heyd. ; 
contaminatus, Hbt. 9. Trichonotus ; differing from the preceding by 
the hairy prothorax ; A. scropha, F. 10. Heptaulacus, has seven 
furrows on the elytra, with rib-like interstices ; A. sus, F. ; nivalis {sus, 
var., Gyll.), and testudinarius, F. — Second sub-division : AmmceciatcG ; 
head strongly arched, clypeus semicircular deeply emarginated, the 
maxillary lobes short and fringed. A single genus: 11. Ammoecius ; 
A. elevatus,Y. — Third sub-division: Pleurophoratce ; ten rib-like in- 
terstices of the striae on the elytra, the sixth and eighth shorter than 
the seventh. 12. Plagiogonus ; elytra truncate obliquely to the suture ; 
A. arenarius, 111. 13. Oxyomus ; head simply dotted ; A. porcatus, 
F. The following have the head covered with elevated granulations. 
11. Platytomus; prothorax fringed, and without transverse furrows, 
first joint of the hinder tarsi dilated triangularly ; P. sabulosus, Dej., 
rare in the South of France. 15. Pleurophorus ; prothorax as in the 
preceding, first joint of the hinder tarsi narrow and of equal breadth ; 
A, ccesus, Panz. 16. Rhyssemus ; prothorax fringed with short bristles 
on the sides, the back transversely furrowed ; A. porcatus, F. ; verru- 
cosus, new species, from Marseilles. — The second division, Psammo- 
diarii, has the hind legs thickened, the hind tarsi with gradually smaller 
joints and indistinct claws. 17. Diastictus; prothorax without fringes 
and cross furrows; A, sahuleti, Payk. 18. Psammodius ; prothorax 
with cross furrows, and set with short little bristles on the sides ; 
A. sulcicollis and porcicollis. 111. 
There is certainly much good in this arrangement, though the charac- 
ters usually employed are preferable, and the marks of the genera are 
often very minute and undefined. An examination of the extra European 
species will establish some of them and alter others, and especially give 
the proper rounding to the divisions. The Ammceciatce will then assume 
a less subordinate rank in richness of species. The genera Coprimorphus 
and Eupleurus cannot be separated ; but Colobopterus and Teuchestes, 
as well as Acrossus, appear very natural groups of species. Heer has 
shown, that Diastictus (sahuleti) is the proper Psammodius, GyU., and 
does not belong to the Aphodiidae, but the Trogidce. (V. Jahresb. f. 
1841, p. 225). 
Aphodius Zenheri, Germar, has been figured in his Fauna Ins. Eur. 
22 , 6 . 
232 
