424 I'HIOiJOPHILCAL TRANSACTIONS. [aNNO 1730. 



not perish before it has ripened its fruit; whence it might last longer in a tem- 

 perate climate, cool enough to retard its fruit. 



The bark of the fruit is formed of the tube of the flower ; and the lobes dry 

 away during the growth of the fruit. 



The Fruit of the Musa represented entire, pi. 1 1. — Fig. Q represents the fruit 

 half stripped of its bark. Fig. 10, the fruit cut through the middle. Fig, ll, 

 the fruit cut transversely, distinguishing the 3 cells and the seeds. Fig. 12, is 

 another species of musa cut transversely, represented in the Hortus Malabaricus, 

 but having the cells better distinguished here. The six black points are the 

 seed. 



The HirudineUa Marino, or Sea-Leech* By M. Garcin. N°415, p. 387. 



M. Garcin observed on the sea a small insect, shaped like a small worm, 

 which he found in the stomach of a bonite, where it was strongly fastened. Its 

 shape came very near that of a leech ; it had all the motions of that animal, 

 besides some of its own. 



Fig. 13 represents this insect in its natural size, and according to its most 

 usual dimensions. Its body is round almost throughout its whole length, but 

 a little flatted towards its belly b ; so that its circumference, taken according to 

 its thickness, is almost elliptic. It is adorned all along with little circular fur- 

 rows, parallel to each other, and very close together, but so fine, that they can 

 hardly be perceived without a microscope. It is of a greyish colour, and its 

 body rather transparent. On its back, as well as underneath, two black lines 

 begin by an acute angle towards the neck, and running through the whole 

 length of the body, seem to be terminated towards the anus. These lines are 

 not upon the skin, as might be imagined at first sight, without sufiicient at- 

 tention ; they are tubes, or bowels, which serve for nutrition or chylification, 

 which appear through the integuments. M. G. divides the length of this little 

 leech into two parts, distinguished by the centre of a little protuberance c, 

 which is under its belly, and is a muscular body, in form of a spherical bladder. 

 These two parts of the body are in the proportion of 4 to 3. He calls them 

 the fore part and the hind part. This distinction is necessary, both with regard 

 to the different motions of these two parts, and to this protuberance, which 

 separates them at their beginning. This little protuberance, when in its greatest 

 extension that the animal can give it, is of the same form with a little spherical 

 air-pump, and has all the same properties; or it may be compared to the cup of 



* This animal seems rather to be a species of planaria, and is probably the same with the planaria 

 clavata, described in the Naturalist's Miscellany. 



