Botany and Zoology. 73 
the ascomycetous fungi. The trichogyne, also composed of sev- 
eral cells, is a more slender filament hi proceeds bet abs 
from the. ascogone until it makes its way to the surface of the 
thallus. The experience of Stahl shows eas the inkog rites seek 
the surface in that part of the thallus exposed to the light. In 
the majority of cases the spermatia and carpogonia are distinet. 
In the genus Physma, however, the ascogone is in the base of the 
same cavity in which spermatia are found, a ae which 
of t the Museum of Conspearaiee Liston by ALEXANDER AGASSIZ. 
Cambridge, June, 1877. 137 pp. 4to, with 20 plates.—The plates, 
ago, to Tuntite a fifth volume of the Contributions to Zoblogy, 
by P Renae? eo whic f unfortu mney was not completed. 
e firs 
ast 
illustrated. An i important chapter is also devoted to - oe gees 
ogies of Echinoderms 
7. Ninth Annual “Report on the nowious and benefit aed 
other insects of the State of Missouri ; by C. V. Ritey, State 
son City Mo. oe DP. Bv9, with man figures and a map. Jeffer- 
tTmy Worm, and the Rocky Mountain Locust; and also of the 
noxious Insects” the Hellgrammite and Yucca Borer. Of the 
ight miles a year (though not over 
Se “ty a _ over the region west of the Mississippi), and es 
ow mvaded nearly 1,500,000 square miles, or more tha 
eet the 2 area of the United States. It does not thrive ies 
ot its ra range very far south of the territory now occupied ; 
Ut its northern spread is not limited, and it may push to the 
