40 G. O. SABS. PHELIMINAEY NOTICES ON THE SCHIZOPODA. 



Gen. 6. Mysidopsis G. 0. Sars 1864. 



"Beretning om en i Sommeren 18C3 foretagen zoologisk Reise". 



49. Mysidopsis (?) 'meisa n. sp. 



Form of body ratlier elongated and narrow. Carapax very 

 small, leaving the two last segments of the cephalothorax uncovered. 

 frontal margin only very slightly projecting in the miihlle, with- 

 out forming any distinct rostrum. PostaMomen cylindric, scarcely 

 tapering posteriorly, last segment somewhat longer than the pre- 

 ceeding. Eyes very large, pyriform, the cornea deeply emarginated 

 above: Antennal scale rather small, only surpassing the antennular 

 pednncle by its outer third part, narrowly lanceolate, apex obtusely 

 pointed, both margins and apex setiferous. Telson somewhat shorter 

 than the last segment, broad at the base, and rather tapering in 

 its exterior part, lateral margins spinous, apex deeply incised, the 

 ineision occupying more than l / 4 of the length of the telson, roimded 

 at the bottom, margins densely serrated, terminal lobes very nar- 

 row, the apical spines not longer than the laterals. Length 8 mm. 



Ilab. Off entrance to Port Philip, Bass Strait (Stat. 101), 38 

 fms. 1 single imperfect specimen, adult female. 



Rcmarhs. It may be, that this form, of which only a much 

 mntilated specimen is in the collection, does not belong to the 

 genus Mysidopsis; but to judge from the characters to be examined 

 without dissection, I cannot refer it to any other known genus of 

 Mysidæ. 



Gen. 7. Si r i el la Dana 1852. 



United States Exploring Expedition, Vol. 13, Part 1. 

 (Cynthia Thompson, not Sarigny). 



50. Siriella Thompsonii Edwards. 



Cynthia sp. V. Thompson. Zool. Researnhes, pg. 55, pl. VI. 

 Cynthia Thompsonii, Milne Edwards, Histoirc naturelle des Crustacés, Tome II, 

 pg. 462. 



Cynthia inermis, Krbyer, Naturhist. Tidsskrift, 2. Række, Bd. 1, pg. 44, pl. II, 

 fig. C, a-q. 



Siriella Edwardsii, Claus, Zeitschrift fur wiss. Zool., Bd. XVIII» Heft. 2, pg. 

 271, pl. XVIII. 



