INSECTA. 
413 
organs and antennae in the European genera of this family, of 
which he admits and characterizes 21, as shown in the follow- 
ing Table : — 
A. Maxillary lobes gradually narrowed in front, rounded at the tip ; maxil- 
lary palpi conical ; labrum wanting ; tarsi shorter than tibipe. 
I. Third tarsal joint cordate or bilobed. 
* All the tibiae beset externally with spines; abdomen not rising to 
the apex. 
, a. Club of antennre globular or shortly ovate. 
«. Funiculus with seven joints 1. Hylastes (Erichs.). 
/3. Funiculus with six joints. 
1. Labium and third tarsal joint cordate ; antennal club globular. 
2. Hylurgus (Lat.). 
2. Labium oval ; third tarsal joint bilobed ; antennal club 
ovate 3. Blastophagus, n. g. 
y. Funiculus with five joints. 
1. First tarsal joint as long as second and third together ; first 
joint of labial palpi much longer than second and third toge- 
ther; mentum horny 4. Bmdroctonm (Erichs.). 
2. First tarsal joint very short; first and second joints of labial 
palpi nearly equal ; mentum membranaceous. 
6. CarpJiohorm (n. g.). 
h. Club of antennae elongate-ovate. 
ct. Funiculus 6-join ted ; club of three distinct joints. 
1. Club-joints scarcely broader than long. 
6. Phlceophthorus (Woll.). 
2. Club-joints dilated into lateral lamellae. 
7. Pidceotrihus (Lat.). 
jS. Funiculus 7-jointed ; club annulated 8. Ilylesinus (Fab.), 
t Anterior tibiae entire ; belly ascending steeply to the apex. 
9. Scolytus (Geoff.). 
II. Third tarsal joint simple. 
* Eyes divided. 
a. Funiculus 5-jointed 10. Polygraphus (Erichs.). 
h. Funiculus 4-jointed 16. Xyloterus , 
t Eyes simple, more or less reniform. 
a. Club of antennae solid ; funiculus 2-jointed. 
11. Cryptwrgus (Erichs.). 
h. Club annulated. 
a,. Funiculus 3-jointed (Redt.) 12. Uypothenemus(y^BB\m.'), 
/S. Funiculus 4-jointed 13. Cryphalus (Erichs.). 
y. Funiculus 6-jointed. 
1. Third tarsal joint longer than preceding ones. 
14. Ilypohonts (Erichs.). 
2. Third tarsal joint equal to the preceding. 
a. Maxillary lobes with 30-40 sickle-shaped bristles ; first joint 
of labial palpi very large, inflated. 16. Xylehorus, g. n. 
b. Maxillary lobes with not more than fifteen, nearly straight 
spines. 
