SUNIER: Marine fish-ponds of Batavia. — 387 
TABLE VIII. 
Monthly averages of the numbers of 99 of Myzomyia ludlowi THEOBALD and Myzomyia rossii GILES captured by means of mosquito-nets per 10 M? and per night. 
— Te = ee — 
Sr er a a 
November 1918 December 1918 January 1919 First four days of February 1919 | Last 23 days of February 1919 March 1919 tie ee 1919 May 1919 » 1919 = 
lee EN eee x 5 pase i: June 191 uly 1919 August 1919 September 1919 
7 y 7 7 0 re! 7 een 
Average Number of | Average Number of | Average Number of | Average Number of | Average Number of | Average Number of] Average Number of | Average Number of | Average Number of | Average Average Average 
number of observations} number of observations} number of observations) number of observations] number of observations] number of observations] number of observations] number of observations f number of US BTE number of SU 2 Mi ber of In ot Numer of 
Anopheline| Average | on which | Anopheline | Average | from which | Anopheline | Average | Fem which | Anopheline | Average | from which | Anopheline | Average | om which | Anopheline | Average | "om Which] Anopheline | Av g | from which | Anopheline verage | from which | Anopheline Een hit pas pu ce iiber 0 observations] number 0 observattons 
22 per IOM? & were derived oo per LOM: 5 were derd co per 10 M? BF were derives oo per LOM? 8 were derived co per IOM? OF were derived} oo per tom: Netederived oc per 10M | GER ere erh Go pee IOM? Average | ere derived no ES ea N Average | return Jos Average | Eem witch AR: Average | rom vien 
afin 0. the Ah 0. the x 2 salinity 0. the salinity o. the inity o. the 5 À o. the 3 0. the ann lo. the |** : U ae ’ : re [eeperlOM? 2 per 10M? e derive 
and per | Salinity | Sophene | and per Salinity | Anopneiine| And per salinity | anopnetinej, and per salinity | Anophelinef and per salinity | Anopheline| and per Salinity) reine and) per ALL Anopheline and per salinity | anopnetine | and per | salinity AET and per salinity | el and per salinity | to the a oe salinity | to the 
night So averages; night So averages; night su averages; night Sy night So) averages; night SU averages; night 0 night 30 night 2 ET night Anoplielins Anopheline | ANC p > | Anopheline 
on) PE | 400 20. the Zen un 20.the | {90 de 20. the 20. the S "oo S Yo x So | 20. the. Bi S%o night SU night Son ar 
salinity | judiowil salinity Kiudiowil rossii s Tate wilk rossi alee rossii salinity Piudiowi| rossii salinity ludlowi| rossii Judtowil rossti salinity Fiudiowil rossil salinity Piudiowi| rossit salinity salinity nat] rasa a 
averages | oo averages | co | oo average 90 99 Coe eS | = averages | 90 averages |oo Lee Se ee | 99 averages | 09 | op averages | 90 | oo averages | 99 | oo averages asten | esl FERN! cia 
‘mmm mn nn u | En hg ¥ ¥ OU GO s 
| oT Eee ET 
Muara Karang. . — — | 249 | 46.0 9 and 10} — | | 21,148 
| | | 
| | | 
| | | | | | 
Fluit (Djembatan Tomes). — = | 54 58.1 6 | — 3 | 66 8.5 4 3 | 45 11.1 14 — | — — - 16 | 31 15.3 | 
| | | 
| | | | 
| | | | à 
(Muara) Pegantungan . | = =| = = = =| = = | ‘loy 10 | 16.1 9 | LE la | ch 10.7 17 
| | | | | | 
Pekulitan . . | 200 38.8 5) 0 | 219 | 47.3 4 | | = — - — 4 | 50 15.7 Sand 10f 14 76 8.7 4 == — — 51 | 39 7.4 20 100 | 40 14.4 2and 9) 
| | 
| 
| | | | 
Luar Batang . — — = 12) 65 28.0 3and4 | | 51/,| 65 21.3 |12and14] 6 91 13.35 3 — | = = = = — = 
| | | | | | | | 
Jaagpad 498 | 46.7')| 9andi5f 4 94 | 33.9 |12andi3} '/, 75 | 39.0 Il) 406 | 35.9 6and8 | 122 95 |23and3f — | — — — 15 |137 27.7 11 30 | 64 26,7 9 27 | 45 18.1 22 = 
4 | | 
| | 
| =! == == en 2 q 2 — = — = 4 4 4 94 « al 4 5 99 
Heemraad . . = = = — | = = | ES 128 7)| 39 11.3 |1landı2 14 | 4 16.1 7 143 | 24 18.0 17 and 18) 50 5 22.3 
| | | 
| | 7 A 5 2 = > 3 = an | Bo 
Heemraad Oost . 167 | 208 21.6 land7 | 42 | 251 24.0 |12and2) 9/118] 24.2 |36and46f — — — 24 | 3 12.4 4 121 | 25 10.8 21 _ 70| 6 10.5 
| | | 7 = = 
Antjol ; —| —| — = =| =| = — =| = = = 7 | /0 | 203 1 | 
| | 
| | | | 
initi £ / 3:24, i i 8 u mures i alics denote a ludlowi- B at was greater than the corresponding rossii-production 
1) Only at salinities of 32,0 %, and 33.2 °,. ludlowi mosquitos were captured. ) The figures in italics denote a ludlowi-production that was greate I g | 
