100 
PEOTOZOA OF HEETFOEDSHIEE. 
shape of the lorica. A group of individuals was found in the fork 
of a piece of Myriophyllum spicatum. The species may he thus 
described:— 
JSalpingceca tula , sp. nov.—Loricse tube-like or cylindrical, of 
even diameter throughout the entire length, about twenty times as 
long as broad, and often bent or curved in the middle, or flexuous ; 
enclosed animalcule sessile, situated near the anterior extremity of 
the lorica, and having a collar cylindrical in form. 
Amongst those members of the same genus in which the footstalk 
is conspicuously developed may be noted the elegant Salpingceca 
gracilis , of an elongated-wineglass form. This species may generally 
be obtained in great plenty in the Manifold Ditch, near Hertford. 
There are two other genera in this family, Lagenoeca and Polyceca , 
but I have not yet found representatives. 
By a reference to the third and last family I must bring my re¬ 
marks on the order to a close. The family Phalausteeid^ includes 
all those animalcules possessing the essential characteristics pre¬ 
viously referred to, but inhabiting a mucilaginous zoocytum or 
protective envelope; but only one example of the family appears to 
have been found in England. 
I feel that it would be impossible to leave the subject without 
mentioning that recent research, extending over the last four years, 
and the unremitting labours of Prof. H. J. Clark, Mr. B. Carter, 
Oscar Schmidt, the late Prof. Balfour, Mr. Saville Kent, and other 
workers, has elicited almost beyond doubt the important fact that 
the large group of organisms known as the Spongidee are all simply 
vast aggregations of collared monads. The limits of this paper 
preclude more than this passing notice, but I would in conclusion 
commend to the inquiring reader the chapters on the same contained 
in the ‘Manual of the Infusoria’ by Mr. Saville Kent. I am 
chiefly indebted to this work for my information on the subject. 
EXPLANATION OF PLATE VI. 
Fig. 1. Monosiga consociata. la. A zooid with collar and flagellum with¬ 
drawn, and about to enter upon an encysted state, lb. Zooids 
assuming a vacuolar amoeboid phase. 
,, 2. M. Steinii attached to stem of Vorticella. 
,, 3. M. fmiformis —a social group. 
,, 4. M. globosa. 
„ 5. Codosiga- botrytis. 5a. A zooid emitting pseudopodic processes. 
„ 6. A.strosiga disjuncta. 
,, 7. Desmarella moniliformis. 
,, 8. Salpingceca amphoridium. 8a. The collar protruded in the form of 
filamentous pseudopodia. 
,, 9. S. fusiformis. 9a. A zooid assuming an amoeboid state. 9b. An 
encysted zooid. 9c. The same broken up into numerous spore-like 
bodies. 9d. The same with the bodies further developed and dis¬ 
charging as mono-flagellate germs. 
,, 10. aS. sulcata. 
„ 11. S. cornuta. 
,, 12. /S', tuba, sp. nov. 
