212 Annals of the South African Museum. 



apex. I am inclined to regard the other orientation as the correct 

 one. 



These two specimens, although so fragmentary, are of special 

 interest. They furnish one more piece of evidence which serves to 

 dispel the idea that the fauna of the Uitenhage beds lived under 

 geographical conditions which prohibited free intercourse in a 

 northerly direction. It will be remembered that a representative of 

 the Hastati has been recorded from the Neocomian beds of north- 

 west Madagascar." An extension of our knowledge of the belemnite- 

 fauna in the Uitenhage deposits becomes very desirable. 



CLASS CRUSTACEA. 



GENUS MEYEKIA F. M'Coy. 



MEYEEIA SCHWAKZI sp. nov. 

 Plate VIII., fig. 22 ; IX., 4, 4a, 5 ; X., 4, 4a, 46. 



Description. The elongated body shows, in its form, considerable 

 lateral compression, and the carapace, in particular, has strong 

 lateral flattening. The carapace, in lateral aspect, has relatively 

 great height, and the branchiostegites occupy a large area. The 

 cephalic portion of the carapace is best known in its posterior part, 

 since the best-preserved specimens examined have the anterior part 

 broken off. Commencing at the cervical suture and passing for- 

 wards there is a sharp and narrow, weakly serrated, median dorsal 

 keel which is prolonged anteriorly into a short, sharply pointed, 

 laterally flattened rostrum, exhibiting a median carination, weakly 

 and finely serrated. Running almost parallel with this median keel 

 and at a very short distance below it there is on either side a more 

 strongly tuberculated or serrated lateral keel ; at a rather greater 

 distance below this on either side there is situated a second similar 

 lateral keel, and, with a still greater separating space, below this 

 there is a third lateral keel. The two lowest keels on each side have 

 a more marked upward slope than the first lateral keel when traced 

 forwards from the cervical groove. The surface between the keels 

 is flat or slightly concave, and bears very little or no granular orna- 

 mentation. The appendages of the head are unknown. 



The cervical suture slopes backward rather obliquely in its general 

 course when traced upwards. In relation to the slenderly formed 



* Newton (1), p. 333. 



