58 [March, 



(6) On cocoanut, from Barbados, received through Dr. Plaxton : = palmarum 



(Bouch^, ?), Ckll., In. Inst. Ja., 1893. 



(7) On hysophorbe palm, Botanic Gardens, Grenada : == coootis. 



(8) On Areca rubra, Antigua, from Mr. Barber : = nerii, var. {neo Bouche), 



Ckll., I. 0. 



(9) On Sabal Blaclchurniana, Antigua, from Mr. Barber : = nerii, yar. {neo 



Bouche), Ckll., I. o. 

 (10) On a palm, garden of Colonial Bank, Kingston, Jamaica : = nerii, var. {neo 

 Bouche), Ckll., I. o. 



In the following descriptive notea the above specimens will be 



referred to by their numbers. 



Scale. — The scale is flat, dirty white, with the exuviae jpaZe straw colour, and larger 

 than those of nerii. True nerii,* on oleander, looks quite different from the 

 present species. In shape, our scale varies from circular to slightly oval. 



Colour of female. — Pale yellow (1, 2) to yellow blotched with orange, or bright 

 yellow (3), or orange with the terminal portion yellow (7). 



Shape of female. — Nearly circular (2, 3) to broad pyriform (6, 10). 



Lohes. — Normally three pairs, but in 6 I could see only two pairs, while in the type 

 of yaWaa; four pairs were visible. However, the fourth lobe ot fallax is very 

 little developed, and not constant; as on re-examining the original lot (3), I 

 found a specimen with only threee pairs of lobes. I cannot doubt that further 

 material from Barbados would also show specimens with the normal three pairs. 

 The first pair of lobes is normally a little shorter than the second (1, 2, 4), 

 but sometimes (6, 7, 10) this does not appear to be the case. The latter state 

 might seem typical of cocotis, as distinguished from destructor, but that in Mr. 

 Newstead's figure of cocotis the second lobe is slightly the longer. 



The median lobes are often indented on the outer side (7, 10, and Mr. 

 Newstead's description of cocotis), but frequently they seem entire (2, 3, 6). 

 The former state belongs to cocotis, the latter to fallax and destructor, but I am 

 convinced that the character is not a constant one. The second lobe may also 

 be indented (7). 



Plates. — The long serrate plates are practically the same in all the forms. In 2 I 

 counted nine plates anterior to the third lobe, and two between each two ad- 

 joining lobes. A. cocotis is described as having three between the second and 

 third, and seven or eight beyond. 



Anal orifice. — Well away from the hind end, almost as in nerii. In Signoret's figure 

 of destructor it is rather more posterior than I have seen it. 



Qrouped glands. — In fallax (3) I saw plainly four small groups of " spinnerets," 

 caudolaterals of about seven, anterior laterals of about nine glands. However, 

 in another specimen from the original lot oi fallax, I failed to see the glands. 

 In cocotis from Grenada (7) I made out that the glands were present, but could 

 not see them well ; Mr. Newstead found no grouped glands in the types of 

 cocotis from Demerara. In 10, which is doubtless cocotis, no grouped glands 

 were found ; but in 6, from Barbados, they were clearly visible. The original 



* The genuine A. ntrii is unknown in the West Indies. I nave lately found it at Las Cruces, 

 New Mexico ; and have received it from Guanajuato, Mexico (from Dr. DugSs), in both cases on 

 oleander. I also have it from Europe. 



