150 
RHYNCHOPHORA. 
The following table, which includes all species of the genus that I have recognized, 
is necessary to supplement Chapuis’s very curt and non-differential diagnoses; but it 
was drawn up in the belief that the foveee were of specific value, and cannot now 
be revised. Nevertheless it may prove useful as a key to his descriptions, if only it be 
recollected that in several cases he has probably described the sexes of the same species 
under distinct names. 
l. 
ll. 
12. 
Eyes contiguous on front 
Eyes remote on front 
. Propleura foveolate 
Propleura not foveolate . ae 
Elytral striz strong, subsulcate ; interstices rugose to the apex . 
Elytral striz fine, incised; interstices smooth at apex with small 
elevated tubercles . soe 3 ce a 
Ruge of elytral interstices coarse, irregular, not close, usually 
separated by a space greater than the width of the interstice . 
Ruge less coarse, regularly and closely placed . 
Punctures of prothoracic disc neither muricate nor confluent ; Qnd 
interstice of elytra tuberculate to the apex . . . 
Punctures of prothoracic disc submuricate or confluent ; ond inter- 
stice depressed at and not tuberculate to the apex. . 
Elevations on the sutural interstice uniseriate, at least before the 
declivity re 
Elevations on the sutural interstice irregularly biseriate . 
Elytra subnitid, but closely asperate; base of prothorax shining, 
with large impressed punctures er er 
Elytra dull, sericeous, with isolated elevated rugs; base of prothorax 
dull and rough . 2 0 te ee : 
Elevations on basal third of the elytra consisting of rounded 
points . a 
Elevations on basal third of the elytra transverse . 
Interocular space nearly flat 
Interocular space excavate . 
. Propleura foveolate 
Propleura not foveolate . oes 
Prothorax muricate at the anterior angles . 
Prothorax not muricate . eer are ne ere eee , 
Median line of prothorax subimpressed ; elytral interspaces subnitid 
(length over 9 mm.) se 
Median line of prothorax not impressed elytral interspaces dull 
(length under 8 mm.) . 
eNO OD 
6. 
[grossus, Chap.] 
5. 
rudis, Er. 
belti, sp. n. 
[radulosus, sp. n.| 
2, scaber, Er. 
[elongatus, Chap. | 
8. 
[cristatus, Chap.] 
3, scaber, Er. 
10. Chap.*] 
[asper, Er., and ovatus, 
11. 
13. 
rugatus, sp. Nn. 
12. 
[ellipticus, Chap. | 
nitidicollis, Chap. 
* P. ovatus, Chap., appears to be no more than a diminutive variety of P. asper, Er. 
