PANDELETEINUS.—1SODRUSUS. 207 
joints 2-7 short; vibrissee well-developed ; anterior coxe contiguous; anterior femora feebly clavate, not 
longer than the others; anterior tibie unguiculate at the apex, not or obsoletely denticulate ; tarsal 
claws free; body robust, winged, densely clothed with scales. 
Type, Pandeletejus submetullicus, Schaeffer. 
The type of this genus was provisionally referred to Pandeleteius by Schaeffer, but 
it must certainly be removed therefrom, differing as it does in numerous points of 
structure. ‘The head is greatly developed, recalling that of Alissa and various other 
genera of the “Series Aptere”; the prothorax is somewhat cup-shaped; and the 
elytra are broader than the prothorax, comparatively short and subparallel, and finely 
punctate-striate. The insect is found on juniper, according to Mr. Wickham. 
1. Pandeleteinus submetallicus. (Tab. VIII. figg. 31, 31a.) 
Pandeletejus submetallicus, Schaeff. Journ. N. York Ent. Soc. xvi. pp. 216, 217 (1908)'; Pierce, 
Proc. U.S. Nat. Mus. xxxvil. p. 360°. 
Length 33-4, breadth 13-14 millim. 
Hab. Norta America, Beaver Co., Utah +, Los Angeles, California?, Bright Angel, 
&c., Arizona’, Texas.—Mexico, Tepehuanes in Durango (Wickham). 
Mr. Wickham has recently sent us examples of this peculiar little insect from Utah 
and Northern Mexico, agreeing with others from California and Arizona forwarded 
by Mr. Schwarz, of the U.S. National Museum. The scales in some of the specimens 
are uniformly coloured, greenish or golden, in others cinereous and faintly mottled 
with brown above and metallic beneath. 
The following description was drawn up many years ago by Dr. Sharp and requires 
no alteration :— 
ISODRUSUS, gen. nov. [Sharp]. 
Rostrum brevissimum, deflexum; coxe anteriores modice distantes. 
Rostrum not so long as broad, strongly inflexed, narrower towards the tip; scrobes deep, slender, abruptly 
angulate, descending. Thorax elongate; front cox distinctly separated, placed very near the front 
margin, at a considerable distance from the hind margin; vibrisse represented by two or three sete. 
Metasternum not elongate, as long as the first ventral plate. First and second ventral plates equal in 
length, third and fourth equal, short. Legs stout; tarsal claws small, connate. 
This genus resembles Polydacrys and Pandeletetus in many respects, and still 
more Jsodacrys in the apterous series, but all these three genera have free claws. 
Tsodrusus is altogether a most anomalous little insect; the rostrum could scarcely be 
shorter, and I do not see any trace of a nasal plate atits apex. The wings (Tab. VIII. 
fig. 326) are folded transversely, but have remarkably few veins. A _ similar 
rudimentary condition of the vibrissz occurs in Pseudelissa and in Jsodacrys. 
