38 NEW INVERTEBRATA FROM 



into ti median unpaired appendage which forms the roof 

 of the mouth and extends considerably beyond the ante- 

 rior margin of the head. On the ventral side the mouth is 

 enclosed by two lal)ial lobes, one on each side, and a me- 

 dian posterior lip. 



Four dorsal eye-spots of dark color are found on the head. 

 At the base of the cephalic tentacles there are two clusters 

 of small spines. In one of these clusters the spines are 

 directed forward and are larger than in the other. Both 

 clusters lie at the base of the tentacles. The parapodia of 

 the body are arranged as follows. On the second, third and 

 fourth body segments, counting from the head, we find a 

 dorsal and ventral bundle of set{\ .d a dorsal and a ven- 

 tral cirrus. The ventral cirrus is smaller than the dorsal. 

 In the fifth body segment there is a fan-shaped deeply em- 

 bedded bundle of large spines in addition to the dorsal 

 and ventral clusters. 



The segments following the fifth have in place of the 

 ventral spine a collection of large, stilf setae projecting in 

 a fan-shaped form. These are at least five in number, often 

 more, and notched on one side at their free edges. Dorsal 

 cirrus long, simple and of a yellow color. The terminal 

 body-segment is bifid, and the anus is situated at its tip. 



The digestive canal has a brown and yellow color and is 

 easily seen through the body walls. 



TUNICATA. 

 Clavellinopsis rubra gen. et sp. nov. 



Specimens of this large red Tunicate are abundant on 

 the piles of the wharf at Santa Barbara.^ The animal is 

 found in clusters, its leathery tunic being coated with many 



> Many genera of free Timicates were found in the Santa Barbara Channel, 

 large Oikopleura with its " Ilaus " is at times abundant. Dolioliim was taken 



