Astronomy. 295 
a motion of the wings so rapid as to be almost imperceptible; indeed the 
muscular power of this little creature appears to very great in every 
Tespect, as, independently of its rapid and sustained flight, it grasps the 
small twigs, flowers, &c., upon which it alights with great firmness, and 
if wounded clings to them with the utmost tenacity: it appears to be 
Most active in the morning and evening, and to pass the middle of the 
day under the shade of the thick leafy branches, Occasionally it occurs 
in such numbers, that fifty or sixty ma seen on a single tree, hen 
captured, it so speedily becomes tame, that it will feed from the hand or 
mouth within half an hour. Successful in keeping one alive during a 
long railway journey, in a gauze bag attached to his breast-button, for 
three days, during which it readily fed from a small bottle filled with a 
sytup of brown sugar and water, Mr. Gould determined to attempt the 
bringing of some living examples to England, in which he succeeded, but 
Unhappily they did not long survive their arrival in London, and died on 
the Society’s Gardens, where they would doubtless have been objects of 
great attraction. Mr. Gould added that he was certain that they might 
be readily brought to this country; that they would live in the gardens 
at least during the months of summer, and that the captains ot any of 
Leptosiagon, Trask, nov. gen. (Proceedings of the California Acad- 
Moveable mandibular process. Eight species are described occupying 
ag €xtended geographical range, from Mexico to Japan.” e 
Ne plate are well executed ; and to judge from them, these forms must 
‘ our conjectures be true, all of these objects may belong to two or three 
Pecies of Annelides, W. 8 
IV. ASTRONOMY. 
O. RercnENBACH, 
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