LONGEVITY IN SATURNIID MOTHS 195 
TROPAEA LUNA 1911 
To gather more data on other species of this family, cocoons of 
Tropaea luna were obtained. Sixty-two imagines (36 males and 
26 females) emerged between May 10 and June 4, with one excep- 
tion on April 23. Records were kept on 60 of these. 
It will be seen that the length of life of males and females.was 
almost equal and that the mean for the entire population was 
greater than that for C. promethea. Table 13 gives the details 
of this work and is self-explanatory. 
TABLE 13 
Luna 
| DAYS | 
CLASS | = T. | MEAN 
| 3 4 | 5 | 6 7 8 9 | 
Iie Wat Sacer, veneer a ert oe Ra OA ek re ee mh) at) Bp ihaa | 5 | 4.60 
Iijmmrra ee LSU SS escarole meee Ee ei ears cree eee facil Ba Ree Sul aeSa Neate on SOM ONO, 
Merted Ov aes fh san iajcm someon ac akos ona cubs teu ecnanies Noa eae! 5 | 6.60 
MOM TANTEI OS elo as ie oie fev sicdes cofoters oislcjeca) vayplo eleraleisie el elaiteulsrsiors'sss Wee ees BPA Ch al |) PDE) aSeHe) 
PMieearedtinsactss (NWA aa aut emu at ens asians a,c Ais (ig cts fee1g ao a rH 10 5.60 
PAU etn ACeAGINSe ChSee were a eet eerclae eae Dee eee ie: 45 Sulmend | LS LON leone O | 5.96 
ENV GBs ic0 oes i eee Ete SEED CICA UST 4) 4) 5/9) 8 3) 2| 35 | 5.86 
PRIMM CM Suter Ge aN nin eer mancUis, teats qdermacienss + (| "| Bilt eal Omen ae) ime liaeDo me |H5 06 
Wihtolespopulatio»nsy sts eee ta eee nen teeny Wr: NO |) CT aw) BB GO 0) 
TELEA POLYPHEMUS 1911 
Twenty-one cocoons of T. polyphemus gave 13 males and 8 
females. Notes on longevity were made on 19 of these. None 
of this species mated in confinement. Table 14 shows a remark- 
able difference in the life of the sexes, the male varying from 3 
to 7 days, and the female from 7 to 12 days. The duration of 
life of the entire population was 6.79 days. 
TABLE 14 
Polyphemus 
Ais oie 2 af M i - = 
DAYS 
CLASS | ] Vena oa 7 Tam (ome MEAN 
3| 4 5| 6| 7| 8| 9/10 11 | 12 | 
| | | | 
Males yeespae eee ects teas uae Semeniay dette | Bi 2 1) AV 8) | 1 |) Bee 
Herma es pecc se ce metho ot oterajoenteainrne adanieinwlecae | 1 | 4| 1 1 7 | 9.29 
Wholewpopulationee sae rie acne ) Pa al | 4 | 4 | 4 | 1 otal Ol G79 
