844 NOTRS AND MEMORANDA. 



Jeffreys' description of S. hiserialis, Verany, which is considered by 

 Jatta to be synonymous with S. elegans, d'Orb., as is also S. rwpellaria, 

 d'Orb., these two latter having no sufficiently important characters to 

 entitle them to separate specific rank. On the other hand, the Sepia 

 elegans, de Blainville, of Gwyn Jeffreys' Brit. Conch., is a distinct 

 species equivalent to the *S^. orbignyana, Ferussac. This, according to 

 Jatta, is the S. elegans of Norman's Revision of the Brit. Moll, {Ann. 

 and Mag., 1890) also. Previous British records for our species are 

 Polperro and Mawgan Forth in Cornwall, Swansea, North Coast of 

 Ireland, and Northumberland. Apparently in some, if not most, cases 

 dead shells only were obtained. E. W. L H. and W. I. B. 



Mysis longicornis. Milne Edivards. This species, which we believe 

 to be an addition to the known fauna of the Atlantic area, was found 

 to be somewhat abundant in Start Bay, S. Devon, at the end of 

 July last (1898). It was taken on fine gravel and sandy ground off 

 Blackpool and Slapton Sands in from 5 to 8 fathoms, in company with 

 Mysidopsis gihhosa and M. Angusta, these in comparatively small numbers, 

 and single specimens of Siriella armata, and of a form approaching, 

 though not agreeing exactly with, S. Glausii. 



So far as we have been able to ascertain, M. longicornis has not 

 previously been obtained outside the Mediterranean, and therein only 

 at Naples (M. Edwards, G. 0. Sars, &c.), and according to Cams (Prod. 

 Faunce Mediterr.), at Algiers (Lucas). 



This species can hardly be assigned to any of the genera of Mysinte, 

 as defined by Norman ("British Mysidtie," Ann. and Mag., 1892). It 

 would appear to come near to Neomysis, with which it agrees in having 

 the third pair of pleopods in the male unmodified, and like the first, 

 second, and fifth pairs differing in no material respect from those of 

 the female.* Were Norman's definition of the sub-family strictly 

 enforced, both would, as a matter of fact, be excluded from the Mysinre 

 by this character. 



Mysidopsis angusta. G. 0. Sars. This species was found in Start 

 Bay on the same ground as 3fysis longicortiis in July, 1898, as noted 

 above. It was taken in the same locality in the early part of the 

 summer of the previous year. 



Tlie finding of Mysidopsis angusta on the South Devon coast adds 

 considerably to the known range of the species in North- Western 

 European waters, where it had not previously been taken further south 

 than the Dogger Bank (Scott, "Crustacea from the Dogger Bank, 



* Compare the fijjures of Sars: Middelhavets Mysider, PI. X., Fig. 13, and Monograph 

 over Mysider, V\. XXXI V., Fig. 17. 



