PARANDRITA.—SILVANOPHLEUS. O37 
body, and the antenne are altogether smaller, with a comparatively short and very 
slightly broader three-jointed club. 
This little insect appears, like most of its congeners, to be very rare, as we have 
received only four specimens. The head and thorax are more or less picescent. 
In the two examples from Zapote the labrum is elongate and projects over a 
considerable length of the mandibles; in the other two specimens it is so short that it 
is difficult to detect. These latter individuals agree in this respect with the other 
specimens I have seen of this interesting genus. I am not able to throw any light on 
this peculiar difference in P. stipes; the labrum looks as if it might possibly be 
movable and capable of retraction or protrusion. On the other hand, the difference 
may possibly be sexual, or even specific. If the latter prove to be the case the name 
here proposed should be applied to the form with elongate labrum, which I have 
selected as the type, it being the most different from its congeners. Three of our four 
examples were sent to M. Grouvelle, and he considered them to be all one species. 
SILVANOPHLCEUS, gen. nov. 
Acetabula anteriora occlusa. Corpus perdepressum. Coxe omnes late distantes. Epipleura attenuata. 
Cetera fere ut in genere Lemophleo. 
The European Lemophiwus testaceus is taken as the type of this genus, which may 
be briefly defined as consisting of those Lwmophiwi that have the anterior coxe closed 
by an actual contiguity between the angle of the prosternal process and the tip of the 
prothoracic side-piece. This form of prosternum is markedly different from that of 
Silvanus, where the acetabula are separated from the mesopectus, while here they are 
in contact with it. 
The genus will, no doubt, prove to be a composite one, but its further partition must 
be left till our knowledge of this very difficult group of Coleoptera is much more 
advanced than is the case at present. 
1. Silvanophleus nitens. 
? Lemophleus nitens, Leconte, Proc. Acad. Phil. vii. p. 751; Casey, Trans, Am. Ent. Soc. xi. p. 87, 
t. 6. fig. 9 (3d) ?. 
Hab. Norta Ammrica *, Colorado River, California !1.—Mexico, Cordova (Sallé). 
We have received a single female example only of an insect belonging to the 
extremely difficult group of species allied to S. testaceus. These insects may be distin- 
guished from S. gundlachi by the side of the thorax being sinuate just behind the front 
angle, so that the angle projects as a small tooth. I have no means to enable me 
to form an opinion as to whether our insect isa North-American species or not. 
Specimens of an allied form from South California were sent to me by the late H. K. 
Morrison as Lemophleus gundlacht. This species they certainly are not; they are 
nearer to the European S. testaceus, but are quite distinct therefrom. 
BIOL, CENTR.-AMER., Coleopt., Vol. IL. Pt. 1, August 1899. 3 Z* 
