118 bulletin: museum of cOxMPAkative zoology. 



tissues. A distinct ciliated canal lined with sensoiy epithelium leads 

 from a slight papilla in the specialized lateral cephalic furrow beneath 

 the basement membrane and outer fibrous layer to the nervous 

 tissues above and l)e8ide dorsal brain lobe (Text-fig. 25). 



Lateral sense organs situated immediately behind efferent nephri- 

 dial ducts, rather conspicuous in life, appearing as colorless, oval 

 spaces in the midst of the lateral, longitudinal black lines, and at 

 anterior border of fourth transverse band. Sense organs not very 

 extensive, but highly specialized and very conspicuous in prepared 

 sections (Text-fig. 26). Sensory cells less than half as high as those 

 of neighl>oring cells of the integument, forming a conspicuous oval 

 depression exactly on lateral margin. 



Reprodnctive organs. — Sexual ])roducts mature in August, 

 Eggs opaque and rose colored, giving characteristic rose coloring to 

 bodies of females. They develop in pouches in the parenchyma 

 above lateral nerves, each pouch containing upward of 20-50 or 

 more ova. Oviducts open on dorso-lateral surface, completely 

 formed some time before the eggs are deposited ; lined with a dis- 

 tinct layer of small, closely placed epithelial cells. Genital sacs for 

 following year established before eggs of jirevious year are fully 

 mature. 



Habitat. — Several feet below low-water mark on piles of wharf. 

 San Pedro, California. Not common. Only sexually mature 

 females were obtained (Coe, :01). 



5. Carinella albocincta Coe. 

 Harriman Alaska Expedition, 11, p. 186, PL 17, figs. 4, 5, 1904. 



PI. 1, fig. 4. 



This strikingly colored species with its characteristic markings 

 may be distinguished easily from other described species of the 

 genus by the following peculiarities : 



Body rather stout for genus, not much flattened, rather firm ; 

 head of moderate proportions, of variable sha])e, broader than neck^ 

 demarcated from body by lateral constrictions ; esophageal region 

 rounded, intestinal region not much flattened, posterior extremity 

 not slender ; proboscis pore subterminal, proboscis rather small ; 

 mouth situated just back of lateral constrictions. 



