IOWA ACADEMY OF SCIENCE 
231 
North American species all have joint 1 of the rostrum longer than or sub- 
equal in length to that part of the head in front of the antennae; antenniferous 
tubercles unarmed externally at the apex and the ocelli on very slightly elevated 
tubercles. 
а. Surface of pronotum and prosternum more or less granular. 
b. Smoke-brown in color, base of pronotum and outer part of connexium 
red; rostrum brown banded with white; scutellum flat; pronotum 
obsoletely rugose; about 20 mm. long l.ruhidus Uhl. 
bb. Piceous or nigro-fuscous; pronotum not marked with red; rostrum 
without white bands. 
c. Juga and tylus separated by terminal notches; rostrum barely 
reaching prosternum; about 35 mm. long 2.maximus Uhl. 
cc. Juga and tylus not distinctly separated terminally; less than 25 
mm. long. 
d. Eyes small; head black; body very narrow, one-flfth as wide 
as long; rostrum reaches middle of prosternum 
3. protractus Uhl. 
dd. Eyes large; head fuscous; body at least one-fourth as wide as 
long 4. ruhrofasciatus DeG. 
aa. Pronotum and prosternum destitute of granules. 
b. Border of abdomen of one color (black or fuscous), segments of 
border, narrowly at base, broadly at the apex, bordered with reddish 
brown; clavus, except at the extreme base, fuscous or black, 
c. Rostrum slender; joints 1 and 2 slightly pilose, 2 more than 
twice as long as 1; tubercles at the apical angles of the pronotum 
slightly acute, conical 5. sanguisugis EeC, 
cc. Rostrum entirely pilose, joint 2 a third longer than joint 1, joint 1 
much longer than joint 3; tubercles at the apical angles of the 
pronotum slightly elevated, obtuse 6. variegatus Drury- 
bb. Base of the border of the abdominal segments fuscous or black or 
with black spots. 
c. Broad border of the abdomen yellowish or light brown marked 
with a black spot at the base of each segment. 
d. Black spot on the disc of the corium small or obsolete 
7. dimidiatus Latr. 
dd. Disc of the corium with a broad, more or less interrupted 
black fascia S. maculipennis Stal 
cc. Border of the abdomen entirely black except for a narrow yellow- 
ish spot at the apex of one segment 9. gerstaecJceri Stal 
l. C. RUBIOUS Uhler. Lower California. . 
2. C. MAXIMUS Uhler. Lower California. 
3. C. PROTRACTUS Uhler. California. 
4. C. RUBRO FASCIATUS DeGeer (=staln SigTi.=gigas Fsihr. =erythrozonias 
Gmel.) is distributed throughout North and South America, Asia and Africa 
as far north as the latitude of Kansas and China. 
5. C. SANGUISUGIS LeC. {-^lateralis Stal). Maryland to Illinois and south to 
Florida, Texas and Central America. 
б. C. variegatus Brury {=claviger GcmQ\.=lecUcularis ^i2i\=lenticularis Stal). 
Georgia, Illinois, Texas, California. 
