ON THE ANASPIDACEA, LIVING AND FOSSIL. 495 
With regard to the segmentation of the body, Professor 
Fritsch confesses that he is doubtful, but the number of 
seoments which he gives in his restored figure is plainly 
wrong. He only figures six thoracic segments in the restored 
figure, but it appears to be demonstrable from his figure of 
an actual specimen in ventral view that there are eight free 
thoracic segments carrying eight similar limbs. It is im- 
possible not to observe that if only Professor Fritsch, at the 
time of writing, had been familiar with the living Anaspides, 
he would have interpreted his fossils otherwise. But what 
shall we say of the restoration of Gampsonyx, in which, 
according to Professor Fritsch, there were seven abdominal 
somites besides the telson, and two pairs of maxillipeds in 
front of the seven pairs of thoracic legs? As Calman points 
out, these characters are so exceedingly peculiar as to pre- 
clude direct comparison with any other known Crustacean, 
and would remove Gampsonyx from any immediate re- 
lationship to the Malacostraca at all. While gratefully 
acknowledging, therefore, Professor Fritsch’s careful descrip- 
tions of these interesting fossils, we find it impossible to 
follow him in his general restorations of them, or in his denial 
of their relationship to the Anaspidacea. There is one other 
point in Professor Fritsch’s work which may excite a com- 
ment, and that is the alleged presence of an otocyst on the 
inner ramus of the uropod in Gasocaris and Gampsonyx. 
An otocyst in this position is only found elsewhere among the 
Mysidacea ; it is not present in the living Anaspidacea or in 
Preanaspides. 
2. ExrernNaL Morpxo.oey. 
(A) General Appearance. 
The Syncarida are rather small animals, the largest size 
being attained by the living Anaspides tasmaniz, excep- 
tional specimens of which may measure over two inches in 
length. The smallest form known is the living Koonunga 
cursor, which measures about a quarter of an inch in length. 
