Genus Anamnesis. 511 



marginibus externis profundo dcorsum intusque inclinantibus, 

 angulum acutum formantibus, abdominisque partem circumcin- 

 gentibus. " 



Pedes graciles : coxis intermediis a se distantibus. Tibicc an- 

 ticae extus quadridentata;, dentibus subelongatis subacutis ; et 

 quinque tuberculis brevibus subobtusis subdentiformibus prope 

 basia extus, duobusque inter denies primum et secundum sub- 

 acutioribus, instructa; ; tarsis nuUis. Tibice intermediaj tetra- 

 goDx, graciles, subarcuata;, iongitudine mediocres, integra;, duobus 

 calcaribus ad apicem instructs ; tarsis subfortibus, unguibus debili- 

 oribus. Tibice posticaj elongate, calcare uno instructae, in cseteris 

 intermediis similes. 



Corpus supra depressissiraum ; ahdomine subtus convexo. 



Obs. Instrumenta cibaria^ individuum exemplum generis solum 

 habens, baud dissecui riteve examinavi. 



The family of ScarabcBidce as characterized by Mr. MacLeay 

 in his " HorjB Entomological" appears diviseable into five chief 

 groups; of which the genera Scarabamsy MacL., Copris, III., 

 Phanceus, MacL, Onthophagus, Latr., and the remaining portion 

 of the genus Ateuchus^ Weber, which does not possess those charac- 

 ters that have separated the true Scarabcei^ MacL., from that 

 genus, may be selected as the representatives. To this latter 

 group of Jteuchus, thus curtailed, the present form appertains : 

 and it may probably be found to be the typical representative of 

 the group. At least it partakes to so great a degree of the charac- 

 ters of each of the above well known genera Scarubceus and 

 Copris, that it may be chosen as an appropriate example of the 

 fifth group of the ScarabceidcE^ MacL., intervening between and 

 connecting those two groups, and of equal value with them. It 

 bears au evident relation of affinity to the former genus by its 

 depressed form and elongated and slender hinder tibicE^ and at 

 the same time asserts its affinity to the latter by the wide separa- 

 tion of the medial coxw^ and the double spur on the tibice of the 

 middle legs. 



The group of Anamnesis is of equal value in respect to the 

 larger group of Alcuchiis^ with that which Jlcliocanthurus^ MacL., 



