470 DR. T. A. CHAPMAN ON THE SPECIES [Apr. 27, 
The figures of the appendages to same enlargement show the 
great difference in size between those of singalensis and tenella ; 
but the one of the former at a less amplification is hardly distin- 
euishable from the latter. The species are probably closely related, 
but are now quite distinct. 
36. ceyx de Nicév. J. B. N. H.S. vii. p. 328, pl. H. tigs. 6, 7. 
The appendages perhaps most resemble those of plauta; like it, 
the clasps have gone beyond dilectissima and placidula in the 
gradual dwindling of the spinous process, so that it is quite lost, 
except a trifling greater chitinisation of the angle whence it has 
disappeared. The clasps are very broad basally and joined 
together for a rather longer distance than usual. The dorsal 
processes have a well-marked, rather large, rounded elevation as 
ventral accessory. 
Text-fig. 115. 
ceyx. X 40. 
37. carne de Nicév. J. B. N. H. 8. ix. p. 274, pl. O. fig. 18. 
T have not been able to examine this species, described from a. 
unique specimen ; the figure suggests to me that it is a Sumatran 
race of L. nedda. 
38. albecerulea Moore, P. Z. 8. 1879, p. 139. 
One of the most specialised and remarkable forms. The dorsal 
processes have developed a terminal (not ventral as in dimbata, &c.) 
