64 SCYDM ZENIDA. 
Antenne rather short and stout; the third and fourth joints minute, bead-like; the 
fifth and sixth slightly larger but otherwise similar; the seventh and eighth slightly 
broader, so as to be very feebly transverse; the ninth a little broader, not large, very 
evidently transverse ; the tenth similar though slightly larger; the terminal joint short. 
Head small, truncate behind, rather feebly pubescent. Thorax longer than broad, the 
sides but little narrowed in front, so that it is almost oblong in shape; very hirsute, and 
with two deep closely approximate fovee a little distance in front of the base. Elytra 
subdepressed, slender, rather densely pubescent, and with strongly elevated humeral 
prominences. Legs rather stout, the femora scarcely clavate, the tarsi very short. 
Apparently rare, only seven examples having been procured. 
2. Scydmenus(?) plicatulus. 
Scydmenus plicatulus, Schauf. Mon. p. 42°. 
Hab. Mexico, Teapa .—Cotompta }. 
Possibly this species may not belong to our region at all, as the author cited appears 
to have entertained some doubts whether the Mexican example he had before him was 
conspecific with his Colombian type. In any case the genus is quite doubtful, as the 
structure of the maxillary palpus is said to be aberrant, approximating that of 
Eumicrus. 
HOMOCONNUS. 
Caput anterius subproductum sed haud deflexum; palpi maxillares articulo ultimo minuto acuminato; coxe 
intermedia maxime, prominule, haud contiguee, mesosterno inter eas subperpendiculare haud carinato ; 
coxee posteriores magne, globose, processibus posterioribus inter sese fere contiguis; metasternum 
elongatum, apice summo in medio profunde foveolato, inter coxas spinoso-producto ; femora posteriora 
dente magno triangulari instructa. 
This genus will comprise Scydmanus dentipes, S. batesi, S. spinipes, and S. bonvou- 
loiri, of Schaufuss. The above-mentioned characters render it extremely distinct. The 
species as yet known are all from Tropical America and the Antilles, and the genus 
will probably prove to be peculiar to these regions. 
1. Homoconnus spinipes. (Tab. II. fig. 20.) 
Scydmenus spinipes, Schauf. Mon. p. 78, t. 2. ff. 12 a, 6°. 
Hab. Mexico, Teapa!; Guatemata (Sal/é), Teleman and San Juan in Vera Paz 
(Champion) ; Panama, Bugaba (Champion). 
Apparently rare, only six examples being extant. 
EUMICRUS. 
Eumicrus, Castelnau, Hist. Nat. Ins. Col. i. p. 209 (1840) ; Reitter, Ins. Deutsch. iu. pt. 2, p. 194. 
Although treated until recently by most authors as a section of Scydmenus, this is 
