49 BULLETIN 416, U. S. DEPARTMENT OF AGRICULTURE. 
TaBLE X.—Life history of Geocoris punctipes, Batesburg, S. C. 
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1 Since the date of deposition of the eggs was not known, our records for incubation are all a trifle short. 
It will be seen that the average time required for mcubation is 
about 4 days, that the first nymphal instar requires from 5 to 9 days, 
the second instar from 3 to 5 days, the third instar 8 days, the 
fourth instar 7 days, and that the period from deposition to adult 
is doubtless about 30 days. Table XI presents our data relative 
to the capacity of this hemipteron as a red-spider enemy. 
TABLE XI.—Record of red spiders devoured by reared nymphs of Geocoris punctipes, 
Batesburg, S. C. 
| 
Red spiders consumed by— | Red spiders consumed by— 
/ 
Nymph Nymph) Nymph Total. Nymph | Nymph | Nymph Total. 
Note] NOs)" teNoso- No.1. | No.2. | No.3. 
| 
© Ks Fe Raye See 130 8 iis ee rae ee | ABGR is eS sees S.) Seere ee | ee aap (EBs 
Pil sae bs ae 13 5 7230 eee WG se oes (te. pee 80: |) so ee 
aise eeee§ SEee ER 23 13 UG pees ae DO bs ee. Ta eee ae WOU eee 
APE eee ows 30 20 29 Weseseee 74K) Fee aes eac eter a sae Peers [Re oon 
GTA teases Spe Seaee 35 23 oh ease PL hoe ee a ene Ra ey ASS Eg d bi Ee Sy Usenet AEP 
DA a tk a 22 43 Seale saee ee i EER at ers [eee Ss LOG ce 1S eee 
[A Tee TEES 21 34 404.22 \: 28th = o2 Sebo meeats sey lees Bag ES ad : 
Bihee eee 31 12 50 ele E25 his 2 ec coees | case eee 103, ] 5. so | ee 
OF = ae eee 42 38 B2 ese ae | 26the shee See See TEV ie 32 Sot ee eee 
is 1 Da te Se 38 52 7A th Ee | ei ea Sees 3 Baie Pe 3 Semeteae so [a= oes 
ifthe ese 54 43 By Al ever 
1th toa Se 69 31 69s] -e ee: i otal =rTed 
AS GH SS ate ob ee 67 Gas eee lj spiders...) 398 1, 589 505 | 2,492 
aU | Fr hetpeerpee ter eyes (EV Sees ae 84 | 60) 4:- =. || Total days--.| 12 27 14 53 
i US) Fis epee Stes vee [yee G3 | aice Sees ee cere Average per 
LGU ASS eo Bele ees G5 ee eles ee day (red 
5 WAR peers alr) ee ee Ee (fom tae Amt Boe ae spiders)...- Tak | 58. 8 36.1 47.0 
1 These 33 were eggs, the diet being changed on the following day to mites. 
2 Nymph became adult on the twenty-seventh day. 
From Table XI it is seen that 3 individuals with a total of 53 
feeding days ate 2,492 red spiders, or an average of 47 per nymph. 
The first instar consumed, on an average, 141 adult red spiders; 161 
were drained by the second instar, 602 by the third, and 665 mites 
were eaten by the fourth instar. The adults exhibited an average 
