SCENTS 509 
‘ Proceedings ’ for 1904, p. lviii, but nothing like what Dr. Longstaff 
describes in G. cleopatm.” 
[Colias edusa, auct. (England, 1900). Dr. Dixey determined the 
existence in the male of an odour which he compared to Heliotrope. 1 ] 
In Algeria I failed to detect any scent in C. edusa. 
Colias electra, Linn. (S. Africa, 1905). Dr. Dixey found in a 
male a scent like that which he had previously found in C. edusa. 
I found a somewhat less agreeable odour. 
Colias nilgiriensis, Eeld. (India, 1904). I suspected a slight 
scent in two males of this species. 
Colias hyale , auct., f. marnoana , Eogenh. (Sudan, 1909). I found 
a very slight scent in both sexes, and doubtfully compared it to 
chocolate sweets, or to cloves. It is well to add that, according to 
my experience, it is very difficult to detect scents in the genus 
Colias ; the volume of scent, if one may use the expression, seems to 
be very restricted, requiring the keenest sense for its apprehension. 
Dr. Dixey informs me that the hyale group of Colias is without 
“ scent patches.” 
Terias euterye , Menet. (Jamaica, 1907). I had ample opportunities 
of studying this very common Jamaican butterfly. Of twenty- 
one females taken not one was scented, but thirty-one out of 
thirty-nine males indubitably were. Their odour varied from “ very 
slight ” to “ strong ” (seventeen specimens); my wife described it on 
various occasions as a slight pleasant smell,” “ strong, like Syringa,” 
“ a very soft gentle smell, might be Jasmine,” and “ very slight, sweet, 
Jasmine or Syringa.” Mr. A. P. Ponsonby, when out with me one 
day, suggested Gorse. To my own judgment the scent resembled 
rather Clove-pink, but was still more like Pink Bind-weed ( Con¬ 
volvulus arvensis, Linn.). 
Terias delia , Cram. (Jamaica, Panama, Colombia, Venezuela, 
1907), and T. phiale, Cram. (Venezuela, 1907). Results conflicting, 
but in the large majority of cases negative. 
Terias albula , Cram. (Trinidad, Tobago, Colombia, Venezuela, 
1907). Results uniformly negative. 
Terias nise , Cram. (Trinidad, Tobago, Panama, Venezuela, 1907). 
Out of eight males taken five had a scent, varying from very slight to 
very strong; it was compared to that of Pink Bind-weed. A slight 
scent was detected in a female specimen; this was confirmed by 
Mrs. Longstaff. 
Terias messalina , Fabr. (Jamaica, 1907). In six males out of 
ten a scent was noted; it is described in my notes as distinct or 
1 Proc. Ent. Soc. Lond 1904, p. lvii. 
