MOLLUSCA OF INDIA. 2211 
Dimensions when fully extended :— 
inch 
Extremity of foot to posterior end of mantle... 1°5 
ic BAT (3 Ry a ae ear crane ew 1:6 
Anterior end of mantle to head ............ 0-47 
Total as as 3 3°57 
Hive eA Cle sy a cteiahe wy os spaye olin Fae ou rl nial sonia) 0-32 
Se GGIS Oe, WOOLY can concn cysts is) shay ollelege na shclie, ¢ iiio\as 0°56 
Hab. Shillong, Khasi Hills, in grassy localities. 
GrIRAstA HOOKERT, var., G.-A. (Plate LX. fig. 5, from life.) 
Girasia hookeri, var. shillongensis, Godwin-Austen, Journ. A. 8. B. 
£875; ps 4s plein figs. 1, ba; id. BZ. Se L880; p: 294: 
Helicarion (sec. A) shillongensis, Pfr. ed. Clessin, Nomen. Helic. 
Vivent. p. 30. 
Animal ochre-colour, the mantle being slightly paler than the rest 
of the body; there is no longitudinal grooving on the side of the 
foot, which, viewed under a lens, ’s covered with minute protuberances 
evenly distributed ; foot beneath dull ochre-brown. 
Shell horny, thin, long and narrow, pale green in colour. 
Length 0'°9, diam. 0':28. 
The dimensions of these creatures are not so easily taken, the 
different parts expanding and contracting alternately. 
inch 
Extremity of foot to posterior end of the mantle .. 1:9 
Vieni Ce sie eres coh car ne Mey nhs Sino oy ws sO cded Hes S914. 15 
Anterior end, of mantle to head: cs a6 .1<)6 cece some 0-9 
Lbs isa eta s0sk anatleel  vensee 21a aca, ated gs 4:3 
|e STO. MR omen, C eicdraedee vole uber ye Ue unieecy age acte 0-42 
Another (Plate LX. fig. 5, from life) animal dark umber-brown ; 
body concolorous, the mantle a shade lighter, nearly covering the 
shell in both varieties; the foot beneath is ash-coloured; in this 
particular specimen there is a slight abnormal indentation at the 
anterior edge of the mantle. 
inch 
Extremity of foot to posterior edge of mantle...... 1:70 
VEG ew ere Ate rete, Septy eh hbk ster ae SEE 17. 
Anterior end of mantle to.head’\. 4.5. .20) 280% 0°95 
otab kote Sls ee ies ek ge 4°35 
MSGS TET URS GEE Geo mee cer on ein aonials Cl ne Pecihc 0:45 
Hab. Shillong. Both these forms are merely local varieties of 
hookerv. 
A specimen obtained, also at Shillong, in April 1875 was 4 inches 
long, of an olivaceous brown. An examination of some twenty 
