588 Sir George H. Kenrick on 
and lower localities would yield a number of different 
forms. 
Madagascar seems to be free from many of the ordinary 
tropical diseases, but malaria is undoubtedly present. 
As with the butterflies, the moths have a very decided 
African appearance, but apart from some universally 
distributed species, there are quite a number common to 
Ceylon and even to New Guinea. It would hardly be 
an exaggeration to say that most of the moths taken in 
Madagascar can be distinguished from those on the main- 
land, but the distinction in many cases is not marked, 
and is sometimes one of size only. 
On the other hand, there are many entitled to specific 
rank, and. I now submit descriptions and figures of some 
of these. 
I think it quite likely that some of these have been 
already described, but without seeing the types, I have 
found it very difficult to identify them from some of the 
descriptions, and the types themselves are not easily 
found. In any case I hope the figures will be useful, and 
the names can easily be altered if necessary. 
I have great pleasure inacknowledgingthe kind assistance 
received from Sir Geo. Hampson and his co-workers at 
the Natural History Museum, South Kensington. 
Fam. COSSIDAE. 
Cossus parvulus, n. sp. 
Head, palpi, tarsi, and collar dark brown; antennae paler, 
whitish above: thorax pale brown above, patagia white: under- 
side white, abdomen white above; at sides yellowish-brown. 
F.w. whitish, especially at base and costa, covered with the usual 
Cossid reticulations : including a fairly marked median line passing 
through a dark spot at end of cell. There are five black dots on 
the costa. From the inner margin an ill-defined darker triangular 
patch extends towards the costa. Underside dark but paler on 
costa. H.w. uniformly dark grey, fringes paler spotted with 
darker. 
Exp. 40 to 62 mm. 
Cossus crucis, n. sp. 
Head, palpi, legs, and collar pinkish brown; antennae cinnamon, 
the upper side of shaft white. Thorax white above, pale grey 
