1208 
Then tbe muscle impressions consist of 8 more or less roundish 
spots, which are always situated in a fixed order with regard to 
each other viz. 2 are placed next to each other below and above 
respectively, while between them are four at the corners of a flat 
diamond shaped surface, of which the longest diagonal is horizontal. 
At the extremities of the side-parts of the hingement, the right 
valve has little teeth, while the left valve has in the furrow small 
cross furrows. 
Close to the extremities of the ventral line both valves possess 
some little teeth, which however have as a rule more or less 
disappeared by wearing (11, p. 242). 
The calcified part of the inner sheet can be clearly distinguished 
in adults. With the hingement it is narrow, with the free ridges 
rather wide especially in front and at the back. The “ Verwachsungs- 
linie’ cannot always be seen with certainty. At the wide parts it 
seems however, not to coincide with the “Innenrand’’. 
From my material I think | may draw the conelusion, that the 
proportion between the measurements of the carapaces are liable to 
rather great variations. For this reason I class the Ostracods which 
were wrongly described by Brapvy and Eacrr as Bairdia attenuata, 
also under this class, although they are of a smaller width. Recent 
representatives of this class have been found at Honolulu, in the 
Arabie Sea and in the Indian Ocean. 
3. NESIDEA MULLERI n. sp. (Fig. 4, 2). 
Of these only loose valves are to be found and in a small number. 
It differs from the previous Nesidea species, with which it has 
many points of resemblance, especially, because the valves are larger, 
the sculpture on the outer surface consists of fine pressed-in points, 
and because the angle which is seen behind, is drawn out to a 
greater length. 
With old specimens the sculpture has disappeared for the greater 
part, only at the edges it has been preserved there. With a right 
valve [ find for the length 1,15 mm., the height 0,75 mm. and the 
width 0,34 mm., while in the case of a left valve these measure- 
ments are respectively 1,5 m.m., 0,75 mm. and 0,29 m.m. 
4. LOXOCONCHA AUSTRALIS G. S. Brapy. (Fig. 12, 13). 
1880. Loxoconcha australis G. S. Brapy, 5, p. 119, t. 28, f. 5 af. 
1912: ne 55 G. W. Miter, 11, p. 312. 
