60 
Myron Harmon Swenk 
EXPLANATION OF PLATES 
(Plates made from camera lucida outlines; the seventh ventral plates 
are all about 16 X natural size, the armatures all 8% X natural size.) 
23 
qa 
or 
Fig. 10. 
Bigs tae 
PLATE I 
. Seventh ventral plate of C. brevicornis; 1a, armature of 
(Warbonnet canyon, Sioux county, Nebraska.) 
. Seventh ventral plate of C. willistom; 2a, armature of 
(Warbonnet canyon, Sioux county, Nebraska.) 
3. Seventh ventral plate of C. Jatitarsis; 3a, armature of 
(Lincoln, Nebraska.) 
. Seventh ventral plate of C. gilensis; 4a, armature of same. . 
creek canyon, Arizona.) 
5. Seventh ventral plate of C. compactus; 5a, armature of 
(Clementon, New Jersey.) 
. Seventh ventral plate of C. inaequalis; 6a, armature of 
(Roca, Nebraska.) 
; ' PLATE II 
ham, New Hampshire.) 
. Seventh ventral plate of C. distinctus; 8a, armature of same. 
verness, Florida.) 
. Seventh ventral plate .of C. productus; 9a, armature of - 
(Hyannis Point, Massachusetts.) 
Seventh ventral plate of C. Jacustris, 10a, armature of 
(Point Abbaye, Michigan.) 
Seventh ventral plate of C. fraserae, 11a, armature of same. 
lah, New Mexico.) ° 
. Seventh ventral plate of C. intermixtus, 12a, armature of 
(Cotulla, Texas.’) 
Prate III 
3. Seventh ventral plate of C. scopiventer; 13a, armature of 
(Fedor, Texas.) 
dor, Texas.) 
5. Seventh ventral plate of ‘C. fulgidus; 15a, armature of 
(Big Horn mountains, Wyoming.) 
. Seventh ventral, plate of C. nevadensis; 16a, armature of 
(Reno, Nevada.) 
. Seventh ventral plate of C. armatus; 17a, armature of same. 
diantown Island, Maine.) 
. Seventh ventral plate of C. angelicus; 18a, armature of 
(Los Angeles, California.) - 
102 
same. 
same. 
same. 
(Oak 
saat 
same. 
. Seventh ventral plate of C. validus; 7a, armature of same. (Dur- 
(In-: 
same. 
same. 
( Beu-= 
same. 
same. 
_ Seventh ventral plate of C. nudus; 14a, armature of samé. (Fe- 
same. 
same. 
(In- 
Same. 
