186 RHYNCHOPHORA. 
This genus appears to have its headquarters in Mexico, whence a large number of 
species are now described, extending northward into the United States and southward 
into the Windward Is., Colombia, &c. ‘The type is the N.-American P. hilaris, 
Herbst (=pauperculus, Gyll.). It is connected with Hadromerus by P. erubescens, 
mainly differing from that genus by the less approximate anterior cox. ‘The species 
here referred to Pandeleteius have a 7-jointed funiculus, very stout anterior femora, 
and denticulate anterior tibie *. The vibrisse are not visible in one or two of 
the smaller forms (as already noted by Schaeffer), but they may be abraded or repre- 
sented by small scales; and the scrobes vury in length, according to the species. 
Those with a deep transverse inter-antennal sulcus on the rostrum, or a long second 
joint to the funiculus, might perhaps be eliminated, but they are connected by inter- 
mediate forms. Menetypus (type, M. hadromeroides, Kirsch, from Colombia) only 
differs from Pandeleteius in the wide sense in having rather more sharply denticulate 
anterior tibie f. The females of several species have the elytral suture set with long 
erect hairs or seta towards the apex (as in Hadromerus), and in P. armatus there is 
also a sharp oblique tooth on its inner edge near the tip. The wings seem to be fully 
developed in all of them. 
The numerous species may be distinguished thus :— 
a. Scrobes descending to lower margin of rostrum. 
a’. Second joint of funiculus as long as first; vibrissee long ; eyes prominent. 
a’. Rostrum with a deep, transverse, inter-antennal groove. 
a. Vestiture metallic, scintillate ; elytra maculate. . . . . . . . = erubescens. 
6°. Vestiture not metallic, whitish; elytraimmaculate. . . . . . . doops. 
6°. Rostrum without transverse groove ; vibrisse long; anterior femora 
enormously developed. . 2. 2 1 1 ee we ee ee eee femoralis. 
6’. Second joint of funiculus much shorter than first. 
c’. Rostrum with a deep, transverse, inter-antennal groove and a v-shaped 
ridge behind the nasal plate; eyes prominent ; vibrissz not visible; 
vestiture opalescent, elytra with coalescent, angulate, darker markings ; 
anterior tibie elongated . . 2. . . we ew we ee ew we teroglyphicus. 
d?, Rostrum with the inter-antennal groove shallow or wanting. 
c’. Vibrisse setiform. 
a*. Eyes prominent. 
a’. Anterior tibie slender, moderately long; prothorax sublineate ; 
elytra obliquely bifasciate and with a dark saddle-shaped 
patch. 2. 1 ee ee ee ee ee ee ee. ephippiatus. 
* P. rotundicollis, Fall, has a 6-jointed funiculus, and P. ovipennis and P. submetallicus, Schaeff., differ 
in various ways from the genus as here understood. 
+ An allied unnamed Colombian genus has simple anterior tibia. 
