THE RED SPIDER ON COTTON. VAS 
consumption of 83 mites per day. Although a number of eggs were 
eaten, Geocoris did not seem to take readily to a diet of mite eggs. 
In the course of the experiments with this red-spider enemy it 
developed that a certain percentage of its eggs are parasitized. A 
scelionid, Telenomus sp., was reared from eggs collected in the field 
and required a developmental period of 11 days. 
CAPSIDAE. 
Rhinacloa forticornis Reuter. A nymph of this bug about two- 
thirds grown was observed in red-spider colonies in a cotton field, 
actively feeding on mites. It was transferred to a rearing cell and 
kept under close observation. The bug showed a strong liking for 
red spiders and developed to adult in the cell. Table XII contains 
the record of this individual. 
TabBLE XII.—Consumption of red spiders by Rhinacloa forticornis, Batesburg, S. C. 
[Nymph collected Oct. 2, 1914.] 
insimavg moked Wevia)uos ee Al ss Tyo eS ese A od £0 
DeCONCed anew ne da Emmet TAT ie, Ms OL te i 
pibimindyclangemeeiee te remy he eee eel Tone oe eles 71 
JNO. CES wc BE pe Ph 8 cc et ea ena ee 65 
TETUTEIO, GIES SASS ES Ae EN SSR, ME A cle ei Se ne en 61 
SIDR Uy Mena ere SEL NSN GS hs tae is See ctcice ts ce tee adc oes 67 
Sericumuumvc avacmolted Ochs O)ew eee ke alk en 46 
JENIN, CAG NOT NE CRE ohe Raima EEO IS be ek es ome alee EA pare eee 39 
Oud leneeeeee ame eet See Lh ee 48] 
Molaierecamme (days. yee ce eis Si kee ee 8 
ESV ORARO [OSE CEA). SOB SSR C OG RC. © ot Deeg > Oca Eom cir mses ra fae 60. 1 
Motaleconsumpitiom byilast instar. 42.2... 5 eeccts- +e ee cee ee 382 
In eight feeding days this capsid bug ate 481 red spiders, or an 
average of 60 mites per day. Two molts occurred during the obser- 
vations, the final nymphal instar lasting six days and requiring, before 
completion, the additional consumption of 382 adult mites. 
REDUVIIDAE. 
A species of reduviid bug was seen commonly on infested leaves 
during August and September at Batesburg. Both the eggs and 
nymphs were abundant at times in and about red-spider colonies on 
tomato leaves. An egg collected August 10, 1914, hatched August 
12 and the nascent nymph was immediately placed into a breeding 
cell with red spiders. Seven mites were eaten the first day, 14 the 
second, 7 the third, 6 the fourth, 17 the fifth, 22 the sixth, and 18 
the seventh. A total of 88 red spiders were destroyed in seven days, 
making an average of 12.6 per day. 
