486 THE ENTOMOLOGIST. 



Fecundity of SphingidcB. — A female of S. Ligustri, which 

 I found at rest a few weeks since, laid two hundred and sixty 

 eggs, all of which, save one, produced larvae. Is this a large 

 number? A female of S. Populi, captured at rest last week, 

 has laid one hundred and sixty eggs. In what work may be 

 found information as to the fecundity of Lepidoptera ? — [-Or.] 

 H. W. Livett; Wells, Somerset, July 23, 1873. 



Smerinthus Populi only a Fortnight in Pupa. — On the 

 6th of August a female specimen of Smerinthus Populi came 

 out in my box, from a pupa bred from a caterpillar this year: 

 the first caterpillar having burrowed on the 16th of July, this 

 insect can only have been in pupa about a fortnight. — D. G. 

 Lathom Browne; Winkjield, Beckenham, August 13, 1873. 



ZygcBua Lonicera and L. Trifolii. — Mr. Robert Last, of 

 Birmingham, has sent me your note of the 11th respecting 

 some Zygaenae he sent you. I named these for him as 

 Lonicerae, and you say they are Trifolii. How do you 

 separate the two ? In a pair I have always considered 

 typical Trifolii, the spats are much larger than in those of 

 Mr. Last's; the middle pair are quite confluent, the antennae 

 are shorter, and I think the thickening is more abrupt. In 

 fact, they are distinct enough to be separated by any tyro ; 

 but when I come to look over a lot of what 1 call Lonicerae, 

 I find differences not very easy to understand. In a series 

 gathered from various places I find a great difference in the 

 length of the antennae, and I have one with a short antenna 

 on one side. The size of the spots and width of the hind 

 border vary much; and I find one from Mr. Last's lot that 

 might pass for Meliloti, but that the upper centre spot is 

 round, not oval. If you would not consider it too much 

 trouble I should be very much obliged if you would give me 

 aline or two on your distinguishing marks of the two species. 

 I have been wondering whether I have not two species mixed as 

 Lonicerae, separable in length of antennae principally. Now, 

 I ask, is that with short antennae what you call Trifolii ? If 

 so, what is the species spoken of before with confluent spots ? 

 — John E. Robson ; Sea View, Hartlepool. 



Zeuzera j^sculi in the common Holly. — On the 17lh of 

 March last a gardener in this neighbourhood found two larvae 

 of Zeuzera ^Esculi feeding in some young holly-trees he was 

 transplanting. They were brought to me; one I gave away, 

 and the other I determined to rear if possible. I partially 



