PAKTHBNOGENEriC TBNDEXOY IN MELANOCERA MENIPPE. 285 



Menippe ? x belina c?. — Only a single pair was avail- 

 able (see list, p 273, e). There was probably no copulation, 

 or, at any rate, there was no effect ; the moths died in the 

 normal time, and no eggs were laid. 



Summary. — To summarise the general differences observed 

 in eggs laid by unpaired moths and paired moths, the accom- 

 panying table is instructive. 



Gerstaecker^ gives a list of species of moths in which 

 parthenogenesis has been observed : 



Fam. Sphingidee — Sphinx, Smerinthus. 



Fam. Euprepiadte — Euprepia. 



Fam. Saturniida3 — S.-fam. Saturniina3 — Telea. 



Fam. Bombycidas — Gastropacha, Bombyx. 



Fam. Liparida? — Liparis, Orgyia. 



Fam. Psych id a? — Psyche. 



Fam. Tineidaj - Sol en obi a. 



Melanocera menippe belongs to the family Saturn- 

 iidte, and the sub-family Sphingicanipinae, in which the 

 larva pupates underground and does not form a silken cocoon 

 as in the sub-family Saturniin^. 



It is interesting to note that it is just in these and in 

 related families that hybridism between different species has 

 been most often observed.- 



' Bronn, H. G.. • Klass. ii. Ord. d. Thier-Reichs, Arthroi)oda,' vol. v, 

 p. 166, 1866-79. 



- See Przibram, Hans. • Experimental Zoologie-Phjlogenese,' pp. 

 41-51, 1910. 



