THE AUSTRALIAN CATTLE TICK. 1981 
TaBLE XLIII.—The parasitic period of Margaropus annulatus australis. 
INFESTATION No. 1. 
Date. Remarks. 
1908. 
Apr 1G; AyD) dees. gene cweae ssc Larve placed on bovine. 
Apr. 7 (1st day)........--.....-| All attached. 
Apr 2) (Hthiday re. 24. 5.--5-2% Several larve molting. 
Aprsta (iil Gay) seses. 2.552 5.- A large percentage molted. 
pr 4 (Sth day) o.. 22)... 78 All larvee molted. 
Apr. ai (bth Gay)==-----.--2-- Four nymphs molted (3 males, 1 female). 
Apr. 22 cae (6 Eh) eee peeienne eiae A total of 20 molted. 
Apr 2s (Let ay))o =. s-cossae A total of 40 molted; one not molted. 
Apr.24 (18thiday)). 15-5. 2.- All have molted. 
Apree0 | (L9tH Gay) =< 1c =get- ces = Several mated. 
Apr. 27 (21st day)-...........-.-] One female fully engorged but still attached. 
Apregs(Q2diday)'s22 ss sae tee One female dropped engorged. - 
PATE 20 (200 SY) aoSernccc oon Two females dropped. Seven fully engorged still attached. 
re 30 (24th day) Fourteen females dropped engorged. 
ay 1 (25th day)...--...--- --| Four females dropped engorged. 
Meyr3di(27thiday))|s ciiccir- 2 544 The last female dropped engorged. 
INFESTATION No. 2. 
PATIOS TT aaNet se ceiews etnies Larve (hatched July 11) placed on bovine. 
Apu IZiGStiday ia. fabseaec 2 All attached. 
Ade (bn day ees. oes ccoce Several molting. 
ANTE SICA ay 45 3.. 05252586 All but two or three have molted. 
Aug. 19 (8th day).......... -| All have molted. 
Aug. 25 (14th day) .-| Twonymphs molted to males. 
Aug. 26 (15th day) Three more have molted. 
Aug. 28 (17th day) All have molted. 
Aug. 29 (18th day) All mated. 
pepe. List day). i2si23255.2.2 Several females fully engorged 
Sept. 2 (22d day) ..-.-----.---- Six females dropped engorged. 
Aug. 4 (24th day)....--.-.----- Five females, the last, dropped engorged. 
INFESTATION No. 3. 
ATION2O SO DMs .c0 Sete ce -Scles Larvee (hatched July 11) placed on bovine. 
ATTEN QU GIStday io. a o-)h 422 All attached. 
Ae. 26) (6th Gay). <2 c a... ee Several molted. 
Ae .129 (Sth day) 2>.. <5: --252- All have molted. 
Sept. 5 (16th day)..............| Several nymphs molting. 
Sept. 8 (19th day)..............] All the nymphs have molted. 
Sept. 12 (23d day).........-.--.] Four females fully engorged. 
Sept. 13 (24th day)..........-..| Four females dropped engorged and several others are fully engorged. 
Sept. 14 (25th day)-............-| Eighteen fully engorged females were removed. 
Sept. 17 (28th day)..........-.-| One fully engorged female removed. 
Sept. 18 (29th day)..........-.-| One fully engorged female, the last, removed. 
Taste XLIV.—Summary of parasitic periods of Margaropus annulatus australis. 
Larve. Nymphs. 
Tne First molted. Last molted. First molted. Last molted. 
as —— Period 
a . - follow- 
tion. Period Period : 3 
os follow- follow- Para- Para- ee 
Date. | ingat- | Date. | ingat- | Date. | sitic Pe Date. | sitie pe- amenih 
tach- tach- riod. riod. < 
ment. ment 
ee er ee eee eee eS 
1908. 1908. Days. 1908. Days. 1908. Days. 1908. Days. | Days. 
eae Apr. 6] Apr. 12 6 | Apr. 14 8 | Apr. 21 9 | Apr. 24 12 15-18 
23 S554 Aug. 11 | Aug. 17 6 | Aug. 19 8 | Aug. 25 8 | Aug. 28 11 14-17 
Be cieac Aug. 20 | Aug. 26 6 | Aug. 29 9} Sept. 5 10 | Sept. 8 13 16-19 
