1909. | FAUNA OF COCOS-KEELING ATOLL. 149 
minute black spots ; it feeds on the leaves and flowers of Dicliptera 
burmanni Nees. It pupates in the spun-up leaves, and the pupal 
stage lasts for fourteen days. 
(25) PacHYZANCLA STULTALIS Walk. 
Abundant in June on all the islands. 
(26) GLYPHODES INDICA Saund. 
Not abundant. 
PrEROPHORIDA. 
(27) A brownish coloured Plume is very common in all the 
islands. The larva feeds on Boerhavia diffusa W., which grows 
everywhere in the atoll. 
TINEINA. 
(28) The solitary species collected was a very common one: 
there are probably at least two others that are distinct. 
There are therefore practically thirty species of Heterocera on 
the Cocos-Keeling atoll, and there are more than twice as many 
species in the fauna of Christmas Island; yet only five, very 
widely distributed species, are common to the two places. 
HYMENOPTERA. 
Species determined by the late Col. C. T. Bineuam, F.ZS. 
FORMICID 2. 
(Native family name, “ Samut.”) 
(1) OponromacHuUS H#MATODES Linn. %. 
(2) PLAGIOLEPIS LonerPEs Jerdon. @. 
Unfortunately this does not represent the whole of the species 
of ants found on the atoll. The natives distinguish at least three 
species :—(1) “Samut saman”; (2) “Samut arpi”; (3) “‘Samut 
alus.” The other representatives of the family are unfortunately 
mislaid. 
FOSSORES. 
(3) Srizus sp. (very near reversus Smith), Q. 
(4) Pison Hospes Smith. ¢. 
(5) NoroGoNIA SUBTESSELLATA Smith. ¢ Q. 
None of the Fossores is at all numerous, and only very careful 
collecting produced the very few specimens obtained in the course 
of fifteen months. 
None of these species is represented in the fauna of Christmas 
Island. 
