544 



Remarks. — This species was first described by Costa from the gulf 

 of Naples, and is the form upon which he founded his genus Microdeutopus. 

 As first pointed out by Boeck, the Autonoe grandimana of Bruzelius is 

 undoubtedly the same species. It is easily distinguishable from the 2 preced- 

 ing species by the very small, uniarticulate accessory appendage of the 

 superior antennae, and by the peculiar shape of the anterior gnathopoda in 

 the male. 



Occurrence. — I have met with this form in the Christianiafjord, as 

 also in a few localities of the south coast of Norway, in comparatively 

 shallow water. According to Boeck, it also occurs at Haugesund, west coast 

 of Norway. 



Distribution. — Bohuslan (Bruzeliiis), Kattegat (Meinert), Dutch coast 

 (Hoek), coast of France (Chevreux), Mediterranean (Costa), Adriatic (Heller). 



Gen. 2. Aora, Kroyer, 1844. 



Syn. : Lalaria Nicolet. 



» Lonchomeres, Sp. Bate. 

 » Autonoe, Bruzelius (part). 



Form of body about as in the preceding genus; anterior pairs of 

 coxal plates, however, somewhat deeper, 1st pair slightly angular in front, 

 but scarcely produced to any true projection. Ej'es small, but distinct. 

 Superior antennae slender and much longer than the inferior, accessory 

 appendage well developed. Oral parts nearly as in the genus Microdeutopiis. 

 (irnathopoda in female likewise of a structure very similar to those in 

 that genus. Anterior gnathopoda in male, however, rather diiferent, being 

 very much elongated, with the meral joint produced in front to a strong 

 spiniform process, carpus not at all expanded, and scarcely broader than 

 the propodos. Pereiopoda, uropoda and telson nearlj^ as in the genus 

 Microdeutopus. 



Eemarks. — The present genus was established in the year 1844 by 

 Kroyer, to include a South-American species, A. typica. It is very nearly 

 allied to the preceding genus, the only essential distinguishing characteristic 

 being the rather different structure of the anterior gnathopoda in the male. 

 The genera Lalaria of Nicolet and Loncliomeres of Sp. Bate are identical 

 with the present genus. Besides the type species described by Kroyer, and 



