388 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XV 111. 



studied. Only recently it has been recognised that the little Phyl- 

 losoma (Gr. phyllon, a leaf, soma, body) is the larva ofPalimirus or 

 its near relatives. These larvae were formerly thought to be a 

 separate genus and are popularly known as " Glass-Crabs." 



Fig. 11.— Phyllosomh. 

 A = Antennule. 

 A a = Antenna. 

 E = Eye. 

 L a = Labrutn. 

 M = Mandible. 

 L i = Liver. 

 6 = Gut. 



Both the scientific and popular names are very descriptive, as the 

 animal is extremely flattened and the greater part of its body 

 consists of two large transparent discs resembling small watch 



glasses. 



These discs represent the carapace. The anterior corresponding 

 to the cephalic portion, is oval or nearly circular and covers 

 the stomach, liver and head appendages. The posterior is the 

 thoracic region : it contains the heart and intestine, and bears the eight 

 thoracic appendages, which it is interesting to note have both 

 endopodite and exopodite at this stage. In earlier specimens the 

 first maxilliped and last walking leg are rudimentary. The junction 

 of the two discs is the cervical groove in which the scaphognathite 

 can be seen moving. 



