234 
IOWA ACADEMY OP SCIENCE 
Subfamily ECTRICHODIINAE 
29. POTHEA Am. et S. 
Am. et S., 344; Stal, (b)102, (f)lOl, 103; Champion, 221. 
These are rare insects confined to America. They may be recognized by the 
elongate post-ocular portion of the head and its cylindrical posterior portion. 
The first joint of the rostrum is longer than the other two put together. In 
North American species the elytra are fuscous or fiavescent and the anterior 
femora show a sinuous dorsal margin. 
P. AENEO-NiTENS Stal. Tylus unarmed in the male; ocelligerous tubercles 
very obtuse, lower than the inter-ocular part of the head. Southern states. 
P. MACULATA Champion. Tylus cariniform; ocellar prominences moderately 
raised; head comparatively short, shorter than the pronotum. The single 
specimen was found in Mexico. 
30. ECTRICHODIA Lep et Serv. 
Lep. et Serv., 279; Stal, (f) 101, 102; Champion, 224; {RUginia Stal, (b) 102). 
An American genus each of whose species shows much color variation. Those 
north of Panama have a smooth posterior lobe of the pronotum and straight 
tibiae. 
1. E. ciNCTiVENTEis Stal. Legs black or piceous; dorsal surface of head, 
base of the hemelytra, dorsal disc and margin of the abdomen, sometimes also 
disc or discoidal spots on the venter, yellowish. Eyes of the male prominent; 
post-ocular portion of the head shorter than in other species; tylus somewhat 
elevated. Texas and Mexico. 
2. E. CRUDELis stal i^ruficollis Stsil= crucifer a Stal=/erwda Walk.) Legs 
and body black; two inter-ocular spots and ocellar tubercles a dirty yellow; 
tylus not much elevated; thorax with a black cruciform impression on the 
reddish pronotum, posterior lobe of pronotum sometimes subrugose. Mexico. 
3. E. CEUCIATA Say {=l)icolor H.-Sch. =media Walk.) Legs pale except for 
apex of femora; elytra short and fuscous; post-ocular portion of the head 
broad; eyes small. Pennsylvania to Mexico. 
Subfamily HAMMATOCERINAE 
31. HAMMATOCERUS Burm. 
Laporte, 79 (Hammacerus) ; Burmeister, 235; Stal (f)lOO; Champion, 226. 
This is an American genus whose species have many color varieties. Those 
in our range have most of the corium and clavus a dirty white and the anterior 
femora armed with a spine near the apex. 
H. PUECis Drury {=nychthemerus BuYin.=furcis Blanch.) is found through- 
out the southern United States. All or only the posterior femora are rufous 
at the base. 
H. LucTuosus Stal from Mexico has all the legs black and has a rod shaped 
black spot at the base of the corium. Both species are large insects varying 
from 21 mm. to 28 mm. 
32. HOMALOCORIS Perty. 
Perty (175, Platycoris) , 216; Stal (f)lOO; Champion, 227. 
The second antennal joint is divided into many small jointlets but the ab- 
domen does not have a densely pilose ventral spot. The following is adapted 
from Champion: 
