ADDENDA, 21^ 



be omitted. " Palpi duo truncati," would be bet- 

 ter altered, admitting it to be a constant character, 

 to " Palpi exteriores capitati ;" since these insects, 

 unless they depart from the general analogy of 

 the class, have four palpi. It having never been 

 my fortune to take one of this genus, I have not 

 had it in my power to examine the proboscis. In 

 S. gigas the exterior palpi are capitate, with a sub- 

 rotund capitulum, in a male sent to Mr. Marsham 

 as S. Mariscus, (but which appears to me a distinct 

 insect), this capitulum is obliquely truncate, in 

 both these the palpi are very hirsute. The next of 

 the characters of Linneus " Antennce — articulis 

 ultra 24," is contrary to fact. In no species, that 

 I have had an opportunity of examining, do they 

 exceed 24. The antennae of S. Columba, fem. 

 counting the minute joint that connects them with 

 the head, and those of S. Camelus, have only four- 

 teen. Those of that above-mentioned, labelled S. 

 Mariscus, have sixteen. In S. Spectrum, mas, S. 

 alhicornis, fem. Fab. and S. Juvencus, fem. they 

 amount to twenty-two. In one very like S. Juven- 

 cus, from America, given me by Major General 

 Davies, they have eighteen joints ; in S. Dromeda- 

 rius they have only thirteen ; and finally in S. gi- 

 gas, they reach the number, which Linneus has 

 given as less than their lowest sum, twenty-four. 

 From these facts I cannot help thinking that Lin- 

 neus intended to have given it " jintemicF articulis 

 infra 24," and that the word ultra got in acci- 

 dentally. 



