CHRISTIANIA VIDENSK.-SEIiSK. FORHANDL. 1 8 8 3. No. 7. 19 



23. Euphausia latifrons n. sp. 



Form of body rather short and stout. Carapax without any 

 lateral denticle. scarcely keeled above, rostrum of very peculiar 

 shape, forming a broad horizontal quadrangular plate, tnmcate or 

 slightly emarginate at the apex. Postabdominal segments smooth 

 above, with rather small rounded epimera. Last segment some- 

 what longer than the preceeding and slightly produced above at 

 the end; præanal spine very small. Eyes of moderate size, clavi- 

 form, the cornea only slightly expanded. Antennnlar peduncle of 

 usual form, basal joint provided at the end above with a short 

 serrate lobe, outer edge produced in a strong spine. Antennal 

 scale scarcely surpassing the 2nd joint of the antennnlar peduncle, 

 ovate, apex rounded, the denticle on the outer edge small, but 

 distinct. Telson with three pairs of dorsal denticles, subapical 

 spines not very elongated and serrated at the inner margin. Uropods 

 shorter than the telson, inner lamella surpassing the outer. Length: 

 6 mm. 



Hab. Australian sea (off Port Jackson), Arafura sea and 

 Celebes sea (off Mindanao); surface. A few solitary specimens. 



BemarJcs. The very small size of the specimens referred to 

 the present species, might excite suspicion of their being only the 

 young of some other form. Having however found in one of the 

 specimens all the marks characteristic of the adult male, I cannot 

 have any doubt as to the claim of the present form as a distinct 

 species. 



Gen. 2. Thysanopoda Kdw. 



Ann. des Siences nat. Tome. XIX. 



Gcncric charactcrs: General aspect as in Euphausia. Flagella 

 of both pairs of antennæ greatly elongated. Terminal joint of the 

 2nd pair of maxillæ rather large and rounded, outer plate very 

 small, almost obsolete. 2 anterior pairs of legs about as in Euphau- 

 sia; 7th pair of legs distinctly developed and of the same struc- 

 ture as the preceeding ; last pair with distinctly developed exopodites 



