50 
Along with the European augur Fabr. the writer includes our North 
American forms haruspica Grt. ( unimacula Morr.), sierrae Harv., and 
inopinatus Sm. which, judging by the genitalia, are probably all forms of 
one species. It is believed that the different type of genitalia, combined 
with the differences found in the palpal and thoracic vestiture, warrant 
the separation from the Graphiphora group and also from Spaelotis unicolor 
Wlk., with which it has frequently been associated, largely on account of 
a certain superficial similarity. The writer agrees with Pierce who regards 
augur as leading over to what he calls the Triphaenidae (op. cit., page 47). 
Caradrina Ochs. 
1816, Schmett. Europ. IV, 80 (type, margaritacea Vill.). 
Eyes naked. Palpi upturned, the third joint more or less porrect; 
second and third joints fringed below with rough hair. Front smooth. 
Male antennae ciliate. Tibiae all spined; fore tibia longer than first tarsal 
joint, smooth-scaled, with fringe of hair on outer side and a couple of 
apical spines; on inner side a complete row of weak spines. Mid tarsi 
without fourth row of spines. Thoracic vestiture rough, hairy, without 
well-defined tufting. 
Figure 29. Male genitalia of Caradrina quadrangula Zett. 
Male Genitalia. Clasper rounded apically, without corona; saceulus 
with a strongly chitinized free arm projecting from the base over the costal 
margin of clasper; harpe oblique, finger-like, and attached to apex of 
saceulus. Clavus absent. Juxta weakly chitinized. Uncus narrow with 
pointed apex. Aedoeagus very long and armed apically with a short spine. 
The writer has placed quadrangula Zett. and clemens Sm. under this 
generic heading for the present on account of the peculiar free arm jutting 
out from the base of the saceulus; this is also present in margaritacea Vill., 
the generic type, but shaped differently, and as superficially there is 
little resemblance between the two species, it would not be at all surprising 
if the necessity arises for the creation of a new genus to include quadrangula ; 
it is very closely allied to the European simulans. Rhyacia Hbn., with 
genotype lucipcta Schiff., will also belong in this group, but may be separ- 
ated by the smoothly scaled palpi. 
