A REVIEW OF THE MYSIDACEA 



125 



to one-third the length of the telson, a pair of plumose setae on the 

 apex between the terminal pair of long spines. 



Inner uropod (fig. 12, b) twice as long as the telson, with three spines 

 on the inner lower margin near the statocyst. 



Outer uropod (fig. 42, b) three times as long as the telson. 



Length of adult female 13 mm. 



Type.— One adult female, U.S.N.M. No. 81261, off Frederiksted, 

 Santa Cruz, West Indies. 



Occurrence. — Off Frederiksted, Santa Cruz, West Indies, 200 to 

 300 fathoms, February 6, 1906, 1 adult female, 13 mm. (type), col- 

 lected by Dr. Th. Mortensen. 



Figure 42. — Synerythrops cruciata, new species: a, Dorsal view of anterior end to show rostral 

 plate, eye, antennal scale and its peduncle, X 25; b, telson and uropods, X 25. 



Distribution. — Known only from the type specimen collected in 

 deep water off the West Indies. The type species is found in the 

 tropical Pacific and Indian Oceans. Both species appear to be 

 bathypelagic in habit. 



Remarks. — The single specimen is not in good condition, the anten- 

 nular peduncles are both broken away, and most of the thoracic limbs 

 are missing. Moreover, what remains of the specimen is rather 

 crushed, so that it is not easy to make out the exact relations of the 

 eyes and rostral plate. The figure I give of the anterior end repre- 

 sents what I believe to be the relations of these parts but better pre- 

 served material may necessitate modifications. Having only the one 

 defective specimen I have not attempted to dissect it and therefore 



