462 DR. T. A. CHAPMAN ON THE SPECIES [ Apr. 27, 
Text-fig. 104. 
camene (selma). X 43. 
30. dilectissima H. H. Druce, P. Z. 8. 1895, p. 571, pl. xxxil. 
figs. 2, 3. 
The appendages are of the dilecta (cardia) type, smaller and 
more delicate; length of clasp 0°82 (dilecta 0°93). The spinous 
process more slender and sharper. 
The clasp is also of a different form, broadest at the base, 
whereas in dilecta it is broadest 2 of the way from the base and is 
rounded in an elliptic line to an almost pointed base. 
31. plata TW Eo WDruce EP. ZaSs 1895; pi at4, spl. scxxai- 
figs. 8, 9. 
The clasps have broad transverse ends without any teeth. It 
is very similar to transpecta, with the considerable difference that 
there are no large teeth on the inner margin as in that species. 
There is a definite though small soft lower element to the dorsal 
process. 
Possibly I have not had true sonchus, the specimens examined 
differing from plauta only in the deep yellowish tint of the under- 
side; the appendages were identical with those ot plawta. 
T have a suspicion (from figures and descriptions) that sonchus 
and plauta are forms of one species. 
