LOGANIA. By H. Fruhstorfer. 
805 
while, just as if to see who it is. Barrow, however, never observed the ants attacking horsfieldi. (Bingham 1. c.) 
According to Moulton, Shelford saw in the Botanical Gardens of Singapore, on a large leaf, some 
ants moving about round a ^ of G. symetlius. On a close examination it was proved that both the Gerydus and 
the ants were drinking up the secretion of the anus of small larvae of Fulgorids or Jassids. The larvae remained 
all quiet, as long as the guests were drinking from them, but they jumped down from the leaf on being disturbed 
by Shelford. According to Moulton, also Gerydus ancon, A. nivalis, Logania srivoa, L. drucei and L. staudingeri 
were met with on larvae of Homoptera. As the Logania have no long legs, their presence is not necessary in 
order to enable to drink from the aphis or Homoptera. 
In Tijds. v. Ent. 1912, p. 17, Prof. Courvoisier reports that, according to the statement by Edw. 
Takobson, Gerydus boisduvali is myrmecophile and feeds from shield-lice which are bred by the ant-species 
Dolichoderus bituberculatus Mayr, 
1. Genus: l^ogania Dist. 
The genus was separated by its author from Gerydus and Allotinus, consistent with the only species known 
in 1887, L. malayica, which may be called the type of the genus on account of the thickened tibiae. 
Although in many species the swelling of the tibiae is scarcely noticeable, the genus is nevertheless maintained 
here and is to denote a group of species comprising the smallest Gerydinae. 
The wings are more roundish than in most of the Gerydinae, their margins (also those of the fore wings) 
more sharply serrate. There are hardly any structural marks of particular importance. The two subcostal 
veins of the forewing, however, before the cell-end, are more distant from each other and placed more steeply 
than in Allotinus, and the cell appears shorter and broader. 
The uncus is somewhat shorter, dorsally not so very concave as in Allotinus and Gerydus, the valve 
somewhat broader. The under surface of nearly all the species is preponderately white, only in one case ( drucei) 
blackish, but densely scaled in a red-brown or blackish. Sometimes there are accumulations seen of large, 
brown spots distinctly contrasting with the finely marbled upper surface, though they are never united to 
complete bands as in Gerydus. 
The Logania are real forest-butterflies; they fly round the tops of low bushes and, according to Martin, 
decidedly faster than the real Gerydus. They chiefly inhabit the lowlands and are found all the year round. 
I observed one species in Celebes at an elevation of about 1500 m. The range extends from Assam to the 
south across the whole of Macromalayana, where Borneo gets the lion’s share with seven species. One species 
was observed, though not captured, in Sumbawa. Celebes is occupied by two species, from the Philippines 
we know 3 to 4 species and recently the occurrence of two species was ascertained also for New Guinea. 
Two groups of species: 
a) Logania Dist. Legs one-coloured. Apex of the fore wing prolonged. 
b) M a 1 a i s Doh. Legs black-curled. Apex of the fore wing roundish. 
a) Group of species Logania. 
L. malayica is the most conspicuous species of the genus. Above milky bluish-white, forewing with 
a broad, black distal area. Hindwing only with a delicate, narrow, brown distal line. Beneath densely speckled 
with red-brown. L. malayica is the only species with an obliquely cut-off costal marginal part, above which 
the apex projects in the shape of a tip, on the forewing, malayica Dist. (141 f) is found in Macromalayana malayica. 
except Java. Moulton mentions it from Sandakan and Pulo-Laut. — subura Fruhst. inhabits the Southern subura. 
Philippines. It is of a smaller habitus than that of the nomenclatural type. Beneath in the $ without the 
brownish apical spotting distinctly exhibited by from North East Sumatra of my collection. From Sibulan 
in Mindanao, flying time December. Type in the Coll. Semper. 
b) Group of species Malais. 
L. sriwa Dist. (141 f) occurs in the Macromalayan region, but without passing over to Java. Ground- sriwa. 
colour as in L. malayica, the black distal border of the forewing being more distinctly inwardly defined. The 
small teeth of the hind wings delicately dotted in black. Under surface, particularly at the costal margin of 
the forewing, alternately dotted blackish and white. Hindwings remarkable for a white, band-like zone without 
any brown scales. From the Malayan Peninsula, North East Sumatra, Sarawak and Pulo-Laut. Moulton 
observed sriwa in South Borneo. It is a well protected species when resting on the upperside of leaves with 
its wings folded. On flying up about 5 to 8 feet high between the trees, it affords a magnificent sight, disappears, 
