342 STAPHYLINIDA. 
differences are extremely slight ; the male has no emargination of the last ventral plate, 
but its anterior tarsi are slightly broader, and the middle ventral lobe of the terminal 
armature is not bilobed as it is in the female. 
CORDYLASPIS. 
Cordylaspis, Nordmann, Symbol. p. 17 (1837) ; Erichson, Gen. et Spec. Staph. p. 341. 
Smilax, Laporte, Etud. Ent. p. 116 (1835). 
Although the name Smilax has priority, it has been displaced on account of its prior 
use for a well-known genus of plants. ‘There is but one species of the genus. 
1. Cordylaspis pilosa. 
Staphylinus pilosus, Fabr. Ent. Syst. i. pt. 2, p. 523°; Olivier, Ent. no. 42, p. 24, t.1. f. 3%. 
Smilax americanus, Lap. Et. Ent. p. 117°. 
Cordylaspis tuberculatus, Nord. Symbol. p. 17, t. f. 6 *. 
Cordylaspis pilosa, Er. Gen. et Spec. Staph. p. 342’; Lacord. Gen. Col. Atlas, t. 15. f. 1. 
Hab. Nicaracua, Chontales (Belt, Janson); Costa Rica (Van Patten); Panama, 
David, Volcan de Chiriqui 2000 to 3000 feet (Champion).—Sovutn America, Colombia °, 
Cayenne 1?°°, Brazil® to Rio de Janeiro.—(Sumatra ex errore +.) 
Var. Abdomine nigro, unicolore, corpore et pedibus nigro-pubescentibus. 
Hab. Nicaracva, Chontales (Janson). (Tab. VIII. fig. 12.) 
Although so widely distributed, this peculiar insect appears to be rare, solitary 
specimens only being found; its habits are unknown, but the late Mr. Belt informed 
me he used to find it in ants’ nests. The variety from Nicaragua that is represented on 
the Plate may be distinct; but as the species is variable in its colour independently 
of this particular race, I shall not treat it as distinct ; it has, however, other peculiarities, 
the punctuation being less dense, and the peculiar setigerous punctures of the elytra 
rudimentary. 
Group XANTHOPYGINA. 
I propose to isolate as a distinct group those members of the Staphylinine exhibiting 
the following characters, viz. superior lateral marginal line of the thorax in front not 
at all deflexed to the under surface, inferior line continued on to the front aspect of 
the thorax without joining the superior line. This group of genera is peculiar to the 
New World, and is indeed nearly confined to its tropical regions. 
TYMPANOPHORUS. 
Tyinpenophorus, Nordmann, Symbol. p. 9, t. f. 2? (palpi). 
Staphylinus, Fam. XII., Erichson, Gen. et Spec. p. 4027. 
This genus has comprised till now only a single Brazilian species, unique, I believe, 
