[huntsman] the ASCIDIAN FAMILY CAESIRIDAE 221 



The chief character of the sub-family is the position of the left 

 gonad, which is in or placed across the primary intestinal loop. In 

 addition there are usually several testicular systems for each gonad, 

 and the vasa deferentia are for the most short and open separately 

 into the atrial cavity, not passing along the inner surface of the ovary 

 to open near the oviduct. 



HALOMOLGULA Ritter 



Pharynx with nine well-developed folds on each side. Infundi- 

 bula extending into folds, each having numerous short stigmata. 

 Dorsal lamina with crenulated margin. Dorsal tubercle a simple 

 opening. 



A gonad on each side, the left in the intestinal loop. Testicular 

 lobes bordering the ovary. Number and course of vasa deferentia 

 not known. 



Type and single species. — H. ovoidia Ritter. 



Ritter established this genus largely because of there being 

 calcareous spicules in processes of the test. The position of this genus 

 in our system is somewhat doubtful, but it would seem to belong near 

 Molguloides. 



MOLGULOIDES gen. nov. 



Syn. Molgula et Caesira auct. (partim). 



(Molgula and eUos, appearance). 



Pharynx with seven folds on each side. Infundibula extending 

 into folds, each having a number of rather short stigmata. Dorsal 

 lamina with smooth margin. Dorsal tubercle simple, or horse-shoe 

 shaped with opening between horns directed to left. 



A gonad on each side, the left in the intestinal loop. Testicular 

 lobes bordering and more or less enclosing ovary. Several vasa 

 deferentia, not accompanying oviduct. 



Type species — M. vitrea (Sluiter) as described by Van Name, 

 1918, p. 68. 



Molgula sordida Sluiter, M. vannamci Oka (1914, p. 452) and M. 

 japonica Hartmeyer probably belong here, but they are as yet in- 

 sufficiently described. 



15— E 



