IOWA ACADEMY OP SCIENCE 
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1. M. piciPES H.-Sch. is black with piceous legs and antennae. It as well as 
M. addominaUs has the inter-ocular part of the head broader than the eyes as 
seen from above. Illinois to Atlantic coast. 
2. M. ABDOMiNALis H.-ScTi. has the sides and sometimes the whole dorsal 
surface of the abdomen red. Illinois and southward. 
3. M. MOEio Erichs. {Pirates picipes Walk.) has larger, less widely sepa- 
rated eyes in the male so that the inter-ocular part of the head is narrower 
than the dorsal aspect of the eye. Mexico. 
4. M. DEGENEE Walk. {Pirates degener Walk) is very similar to M. morio 
and occurs in the same locality. 
27. RASAHUS Am. et S. 
Am. et S., 325; Stal, (f)105; Champion, 214. 
{==Callisphodrus Stal=Macrosandalus Qtal= Sphodrocoris Stal.) 
The species of this genus are large conspicuously colored insects of wide 
distribution. Those in North America are not pubescent but have long scattered 
hairs on the head and pronotum. Champion separates the species as follows: 
a. Pronotum almost smooth, the anterior lobe with the median sulous only 
distinct, the other sulci obsolete except at the sides in front; elytra with 
the base .and apex of the corium broadly, a common patch joining the 
apex of the scutellum, a transverse mark below the base of the membrane 
extending down along the inward margin and a large patch at the apex, 
sordid white, the pale portions of the corium often reddish; size large. . . . 
1. albomaculatus Mayr 
aa. Pronotum with seven more or less distinct sulci. 
b. Pronotum shining, sulci deep, posterior lobe faintly rugulose in front, 
c. Costal margin of hemelytra pale at base. 
d. No transverse vitta at base of membrane 2. Uguttatus Say 
dd. Transverse pale vitta at base of membrane.. 3. sulcicollis Serv. 
cc. Costal margin of hemelytra black to base; elytra with a narrow 
ochreous patch on corium and clavius A. hamatus Pabr. 
bb. Pronotum opaque; all but median sulci shallow and granulate 
5. guttatipennis Stal. 
l. R. ALBOMACULATUS Mayr {=Pirates hamifer WaYk.^Lestomerus tuhercu^ 
latus Fallou). Mexico. 
2. R. BIGUTTATUS Say (307, 358), {=mutillarius Gner. =thoraeicus Stal) is 
found in the southern United States and is common in Mexico. There is 
great variation in color. 
3. R. SULCICOLLIS Serv.. {=spheginus ft.-Sch.). Mexico. 
4. R. HAMATUS FaT)r. {=mutillarius EahY.^uncinatus Gmel.) Walker has 
described this species four times in the genus Pirates, calling it: maculipennis, 
indecisus, concisus, and contiguus; and Fallou has used the names: Pirates 
sipolisii and Lestomerus varipes. Mexico. 
5. R. GUTTATIPENNIS Btal {^Pirates mexicanus Walk.). Mexico. 
28. SIRTHENIA Spinola 
Spinola, 100; Stal, (b)113, (f)104, 105; Champion, 220. 
S. STRIA Fahr. {=carinatus Fahr.=roseus H.-Sch.) is a conspicuous species 
ranging south from Carolina, Illinois and California throughout the Americas. 
