NO. 3 HARTMAN : ORBINIIDAE, APISTOBRANCHIDAE, PARAONIDAE 305 



increase in size farther back. The thorax is deeply depressed (fig. 2), 

 and its transition to the abdomen is at segments 45 to 50. 



Thoracic neuropodia have a long postsetal flange from the upper 

 edge of which a triangular lobe projects (fig. 2). They have uncini with 

 transverse serrations and a distal sheath (fig. 4), and pointed setae with 

 sharply bent tip and transverse serrations (fig. 5). Abdominal notopodia 

 have furcate setae (fig. 6) accompanying the pointed setae. 



Distribution. — Naineris bicornis has been reported only from west- 

 ern Florida. 



Naineris setosa (Verrill) 1900 

 Plate 41, figs. 1-6 



Aricia setosa Verrill, 1900, pp. 651-653. 



Naineris setosa Hartman, 1942a, p. 61, figs. 116-118; Hartman, 1951, 

 pp. 67-70, pi. 17, figs. 1-6. 



Collections. — Southwestern Florida (many), Puerto Rico (7), 

 2597-54 (1). 



This differs from other species of the genus in lacking uncini and 

 subuluncini. The prostomium is broadly truncate (fig. 1) and the 

 everted proboscis is voluminous and multilobed (fig. 2). The thorax is 

 somewhat depressed (fig. 3). Transition from thorax to abdomen oc- 

 curs between segments 25 to 35. Branchiae are first present from the 

 sixth (or fourth) setigerous segment; they are long and erect through- 

 out the body (figs. 3, 4, 5) and widely separated across the middorsum. 

 Thoracic neuropodia consist of a broad foliaceous lobe prolonged at its 

 superior edge (fig. 3). 



A subpodial lobe resembling a ventral cirrus (fig. 4) is present in 

 anterior and middle abdominal segments; farther back it is absent (fig. 

 5). Furcate setae with a spinous shaft (fig. 6) accompany pointed setae 

 in abdominal notopodia. 



Distribution. — Naineris setosa was first described from Bermuda and 

 has been found more extensively in the eastern end of the Gulf of Mex- 

 ico and Puerto Rico; it is here newly recorded from off Acapulco, 

 Mexico, in 13 fathoms. 



Genus Califia, new genus 

 Type C. calida, new species 



The prostomium is short and triangular. The first segment or peri- 

 stomium is a smooth ring. The thoracic region is depressed near the 

 middle. Transition from thorax to abdomen is abrupt with the change 



