27 



in his notice of the Artemia salinat Latreille says, it is a species, " sur 

 lequel nous n'avous encore que des renseignements tres imparfaits." 

 From this it would appear that he had never seen that species, and 

 as most probably the specimens he had received from Cuvier were 

 a little injured from having been preserved in spirits, it is not at all 

 surprising that he did not observe the identity of the two. 



2. Artemia Milhausenii, Fischer. Antennis inferioribus maris 

 gracilibus, articulo secundo angusto ; segmentis duobus cepha- 

 licis longis, segmento caudali bilobato, non setigero. 



Long. 5 lin. 



Branchipus Milhausenii, Fischer, Bull, de la Soc. Imp. Nat. Mos- 

 cou, vii. 1834. 



Artemia Mulhausenii, M. Edwards, Hist. Nat. Crust, iii. 3/0. 



Artemia salina, Rathke, Faun, der Krym. 395. t. 6. f. 14-21. 



Hab. In lacu salino "Loak " in Crimea ; M. Milhausen. 



This species, which was found by M. Milhausen in the salt- 

 water lake of Loak in the Crimea, is about 5 lines in length and of a 

 brown colour. The inferior autennee of the male are much more 

 slender than in the preceding species. The basal joint has no tooth 

 and the terminal joint is cylindrical and pointed. The superior an- 

 tennae, according to Fischer, have the first joint very short and of an 

 obconical form, and the two cephalic segments are considerably elon- 

 gated. The abdomen is slender, shorter than the body, and is termi- 

 nated by a simple bilobed process not furnished with setae. The feet 

 are rather long, and the terminal joint is armed with long filaments. 



In the month of July these animals abound in great numbers ; 

 they fill the lake and give the water a brick-red colour. 



3. Artemia Guildingii, Thompson. Species hcec, reperfa in 

 India Occidentali, delineata est a Domino Thompson in ' Zoo- 

 logical Researches,' sed non descripta, necnon satis accurate 

 delineata est. 



Artemis Guildingi, Thompson, Zool. Research. Fasc. v. t. I. f. 11. 



Hab. In insula " St. Vincent's," in India Occidentali ; Rev. L. 

 Guilding. 



This species is figured by Mr. Thompson, but not sufficiently de- 

 scribed to enable me to give a good diagnosis of it. It was found at 

 St. Vincent's in the West Indies by the Rev. Lansdowne Guilding, 

 by whom its natural history was intended to have been more fully 

 detailed. The body seems to be thick and the abdomen shorter than 

 the body and stout. The caudal segment does not appear to be 

 lobed nor setigerous. The cephalic segment is conical in shape, and 

 the superior antennae, according to Mr. Thompson's figure, consist 

 each of four joints. The ovarian sac consists, according to the same 

 authority, of two articulations. 



4. Artemia arietina, Fischer. Antennis inferioribus maris 

 validis, articulo secundo latissimo, basali unidentato ; antennis 

 superioribus apice furcatis, setigeris ; segmento caudali bilo- 

 bato, lobis setigeris. 



Long. 4-6 lin. 



