AVORMS, ETC. 51 1 



raentary feet. This worm is probably to be referred to the 

 Nats picta, described by Dujardin. (Ann. d. sc. nat. t. ii, 

 1839, p. 293, PI. 7, Figs. 9-11.) 



Miiller (Abhandlungen der Koniglichen Akademie der 

 Wissenschaften zu Berlin Aus dem Jahre, 1841, Berlin, 1843, 

 p. 181), gives up the appellation of Cydocirra Thompsonii, 

 introduced for Myzostomum cirriferum, Leuck., but declares, 

 as the Reporter also had done (Archiv, 1843, Bd. ii, p. 299), 

 that the species Myzost. ylabrum, instituted by Leuckart, is 

 identical "with his other Myzostomum cirriferum. Miiller 

 noticed marginal cirri in all these animals, which he ob- 

 served on Comatula mediterranea. 



HIRUDINEI. The experiments hitherto published, on the 

 subject of the breeding of leeches, have been collected by 

 Egidy in a special memoir (Die Blutegelzucht nach Ergeb- 

 nisseri der Erfalirung dargestellt, nachst ausftihrlicher 

 Beschreibung des Blutegels, seiner Arten u. Varietaten, 

 1844), together with which are also added, a history of 

 what is known respecting the anatomical structure of the 

 Leech, a description of the allied species, and a copious ac- 

 count of the literature of the subject. Olivier (Journal de 

 Chirurgie, par Malgaigne, 1844, Mars, p. 88) has proposed 

 a curious proceeding. The fully-gorged leech should be 

 punctured with the point of a lancet, at the termination of 

 the first third of its body, on the back, in one of the trans- 

 verse wrinkles, the incision being made parallel with it 

 between the vein and artery, and in a direction from before 

 to behind. The wound must be two millimeters long. The 

 leech is afterwards to be placed in lukewarm water, in which, 

 by the contractions of the animal, which may be assisted by 

 pressure with the fingers, the blood that it had sucked 

 escapes through the wound. Should a whitish bladder 

 present itself in the wound, that is, a portion of the walls of 

 the stomach, it is to be cut off in order to allow the blood 

 again to escape freely, The animal is afterwards placed in 

 rain- or river-water. The Ranunculus aquaticus appears to 



