Genus VI. — Staphylinus, Auct. Chrysocomus, erythropterus, castanop- 

 terus, stercorarius, dauricus, erythropennis, bimaculatus, lutarius, cinnamopterus, 

 badius, aeneocephalus, chalcocephalus, aeneicollis, olens, azurescens, cyaneus, simi- 

 lis, morio, sub-punctatus, uralensis, praelongus, erythropus, brunnipes, splendens, 

 laminatus, tristis, fuliginosus, molochinus, variabilis, scitus, laevigatas, impressus, 

 rufocinctus, picipes, maurus, maurorufus, praecox, attenuatus, boops, subuliformis, 

 eeneus, nitidus, caeruleipennis, decorus, cyanicornis, politus, fuscipennis, lucens, 

 atratus, carbonarius, rigidicornis, cephalotes, varius, marginatus, fimetarius, sordi- 

 dus, sub-fuscus, albipes, fuscus, nitidulus, discoideus, vernalis, ventralis, quisqui- 

 liarius, ochropus, ebeninus, immundus, sanguinolentus, dimidiatus, bipustulatus, 

 opacus, agilis, varians, irregularis, fulvipes, micans, virgo, punctus, multipuncta- 

 tus, cinerescens. 80. 



** The last joint of the antennae entire. 



Genus VII. — Cafius, Leach, xanthomelana, nanus, splendidulus, pumi- 

 lus, aterrimus, nigritulus. 6. 



b. The collar swollen, scarcely narrower than the head. 



Genus VIII. — Physetops. tartaricus. 

 2. The anterior tarsi simple in both sexes. 



Genus IX. — Gyrohypnus, Kirby ( Xaniholinus, Dahl.) Longiceps, 

 ochraceus, batychrus, punctulatus, parumguttatus, lentus, tricolor, pyropterus, 

 fulminans, pilicornis, nigriceps, alternans, parvulus, linearis, melanocephalus, 

 procerulus, planatus. 17. 



b. Antennae inserted in front of the eyes, in a process of the head, behind the 



labrum, at the inner base of the mandibles. 



1. The collar narrow; the head large, petiolated, posteriorly truncated. 

 Genus X — Eulissus, Mann, chalybaeus. 1. 



2. The collar swollen, scarcely to be distinguished from the head. 

 Genus XI — Platyprosopus, Mann. (MetopiusJ. elongatus. 1. 



c. Antennae inserted in front of the eyes, beyond the labrum, at the base of 



the mandibles. 



1. Bodily slightly convex ; the thorax linear, quadrangular. 



«. The antennae not geniculated ; the last joint of the tarsi longer than the 

 preceding. 

 Genus XII. — Lathrobium, Grav. elongatum, fulvipenne, rufipenne, 

 punctulatum, multipunctum, brunnipes, lineare, minutum, quadratum, terminatum. 

 10. 



0. The antennae geniculated ; the first joint of the tarsi longer than the 

 following. 

 Genus XIII. — Cryptobium, Mann, fracticorne. 1. 



2. The body depressed ; the thorax trapeziform ; the last joint of the tarsi 



longer than the preceding. 



2o2 



