CHRISTIANIA VIDENSK.-SELSK. FOEHANDL. 1 883. No. 7. 43 



sulcus, rostral projection very sligkt. Postabdomiiial segments some- 

 what depressed; last of them considerably longer than any of tlie 

 preceediug. Eyes of moderate size, claviform, the cornea evenly 

 rounded. Antennular peduncle rather strong, witk the last joint 

 as long as the two others together. Antennal scale small, mnch 

 shorter than the antennular peduncle, obliquely truncated at the 

 apex, outer margin nacked and produced in a short spine. Legs 

 rather feeble, with the terminal portion short, 3-articulate. Telson 

 elongated and narrow, lateral margins spinous, apex slightly incised 

 in the middle(?). Lamellæ of the uropods subequal in length, and 

 provided with very long setæ. Length of adult female only 3 mm. 



Hab. Celebes sea (at Stat. 199). 2 specimens, both ovigerous 

 females. 



Remarks. As both specimens of this form have been mounted 

 in Canada balsam on a glass slide, I have not been enabled to make 

 any closer investigation of the present species, and therefore only 

 preliminarily refer it to the genus Promysis of Dana, believing that 

 it cannot be properly referred to any other known genus of Mysidæ. 



