Explanation of letters. 



a. acontium. m l} m 



b. botrucnidae. 



bm. bunches of craspedonemes in the ciliated mf. 



tract. ml. 



c. craspedonemes of the ciliated tract. mm. 

 C. column. mn. 



en. cnidorages. ms. 



dl. directive loge. mt. 



dm. directive mesenteries. mz. 



E. endoderm. n. 



Ek. ectoderm. nd. 



ff. Craspedia (Filamentchen). o. 



fl. ciliated streaks. /*,, P, 



fp. maeandric bands of the cnido-glandular tract s. 



(Nesseldriisenstreifen s. str., le filament sd. 



pelotonne). 



g. gonads. si. 



h. hyposulcus. sp. 



kd. granular gland cells. st. 



Im. longitudinal muscles. /. 



//. labial tentacles. tm. 



M. mesogloea. 



#z 



metamesenteries of the i, 2, 3 



2 , 3 , 4 . 



4 cycles. 



craspedoneme of the craspedia. 



lateral portions of the median streak. 



median portion of the median streak. 



craspedoneme of the cnido-glandular tract. 



median streak of the filaments. 



marginal tentacles. 



multiplication zone. 



nematocysts (dickwandige Nesselkapseln). 



cnido-glandular tract. 



ovarium. 

 , P 3 . i. 2. 3. Protomesenterium. 



mucus cells (homogene Drusenzellen). 



ridges supported by the mesogloea in the 



aboral part of the stomatodaeum. 



siphonoglyph. 



spirocysts. 



stomatodaeum. 



testes. 



transversal muscles. 



