MUSEUM OF COMPARATIVE ZOOLOGY. 207 



EXPLANATION OF FIGUEES. 



All the figures were drawn with the aid of the camera lucida, and were made from 



preparations of Limax maximus. 



INDEX TO STAGES. 



The Roman numerals indicate Plates. The Arabic numerals, Figures; those 

 which are enclosed in a parenthesis belong to the same specimen. Skeleton num- 

 bers on the plates refer to the number of the section in its series. 



6th day. (jL § ), (i). 



7tl " (—} ( I ) ( U ] ( IV ^ /IV.\ 



l^V? Vio-13/^ \15, 17, 18/' V53, 55-57/' \~54/ 



8th - ( IT - ). 



Vl4, 10, 19/ 



V 20-24' 25-27^' V60/ 



loth « filL, 2* JLA 



V28-31* 58, 59' 61, 63/ 



nth " ( m Y - V M f v - VI - ^ 



^32-47, 5l' 62, 64, 67' 70-73/' ^68, 69' 77-80/* 



12th '* ( IIL v - VII- N ( III, vii. \ ( VI. \ ( VII. \ 



\48, 49' 65, 66' 81, 82/' ^50, 52' 85-94/' W4-76, 80»/' V 83-84/ 



14th " (YIL VIIL I*.) ( viii. ix. x. \ 



V 95 ' 96, 101, 102' 114/' W-100, 104, 106' 115-120' 121, 123, 125, 126/" 



16th « (™L-), (*). 



V 107. /' ^124/ 



17th" ( Yi^i ,-^-). 



M03, 103 a , 105, 108-113' 122, 127/ 



