338 Scientific Intelligence. 
Among the most remarkable forms made known are the deep wa- 
ter genera Amblyops and Pseudomma, in which the ocular pedun- 
cles are rudimentary, lamelliform, and wholly without faceted eyes. 
One of the species of the latter genus, P. rosewm, occurs also upon 
the American coast, having been dredged in the Gulf of St. Law- 
rence by Mr. Whiteaves. 8. I. 8. 
10. The Composition of Lichenes (Recherches sur les Gonidies 
des Lichens); by E. Borner. An article in the Ann, Sci. Nat., 
(gonidia) are Alga, of species which are of common independent 
occurrence; the filamentous tissues (hypha), which bear the fructi- 
ens ‘ 
Schwendener developed the hypothesi lied it generally, and 
. J r deve opec e ypo esis, app 1e¢ £ He pie os 
strated the incorrectness of the observations from which it had 
been inferred that gonidia were produced upon the tip of filaments 
of the hypha, and showed that the latter attached themselves, 2 
they grew, to the green cells, often forming a network over. he 
surface, We have not seen Schwendener’s papers. 
