WPEMNUM: GELATINOSUM. 



33 



Ges. vaterl. Cultur, 1868-69 (1869), pp. 105, 125; NOEMAN 

 in Eep. Brit. Assoc. for 1868 (1869), p. 803; GAVIN in 

 Zeits. f. wiss. Zool. XX, 4 (1870), pp. 512, 515]. 



Colon// (fig. 101) incrusting, thin, viscous, and 

 without colour. Individuals small, yellow, disposed 

 without appreciable order through the mass. Branchial 



FIG. 101. Didemmnn ijr1nfiit<niviu, fixed on a mass of Serpulse. 

 Natural size. (M. Edwards, pi. vii, f. 5.) 



l_n-rtn're with six small obtuse lobes. Thorax large,*" 

 the branchiae with five rows of stigmata. Abdomen 

 united to the thorax by a well-marked peduncle. 

 Reproductive buds branching from the abdomen and 

 running through the tegumeutary mass (fig. 103). 



. 



i 



FIG. 10 Development of Di'l.-nnmm rjelatinosum. Highly magnified. 

 a, early stage ; b, later stage. 



Diann'li-1' of mass one or two inches (12-25 mm.). 

 Length of individuals half a line (1 mm.). 



Hal. Adherent to 8cr^/i]a tiibularia, etc. (Thotnji- 

 soii), 



' The word in the MS. is " small," )>ut this is evidently an error. Milne 

 Edwards says " thorax gros." 



in. 3 



