Pacific Coast of North America. 



271 



three pairs increase in len^-tli, the seventh pair being the 

 longest, and all these are directed posteriorly. The legs are 

 compact and lie folded on the ventral side and cannot be seen 

 from a dorsal view. 



Fig. 23. 



Fig 24. 



Fig, 23. — Cleantis Occident alis. x 10. 



Fig. 24. — Maxilliped of Cleantis occidentalis, greatly enlarged. 



There is but one specimen, collected by the ' Albatross ' in 

 1888 at Magdalena Bay, Lower California ; depth 12 fathoms. 

 Type. No. 22578, U.S. N. M. 

 This species, when compared with Cleantis planicauda'^, 



* Clea7itis plcmicauda, Benedict, sp. n. 



Body linear, densely granulated, five times longer than broad. Feet 

 folded beneath, out of view from above. Body lined longitudinally by 

 six more or less broken black lines. The lines on the sides are more 

 distinct than those above. 



Head subquadrate, partially immersed in the first thoracic segment and 

 rounded on the posterior margin ; sides parallel, anterior margin emar- 

 ginate ; a deep depression or groove runs from the median notch t j thu 



19* 



