Pacific Coast of North America. 



271 



tliree pairs increase in length, 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. 



Fi*. 23. 



Fiff 24. 



Fiof. 23. — Cleantis occidentalis. 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'^^ 



* Cleantis planicauda, Benedict, sp. n. 



Body linear, densely granulated, five times longer than broad. P'eet 

 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 thd median notch to the 



19* 



