524 GEOFFREY SMITH. 
points of importance. ‘The nature of these structures is 
plainly of a generalised and primitive character. In the 
first place all the appendages, with the exception of the first 
antenne, are either typically biramous or have departed very 
little from the biramous plan. In the next place it is impos- 
sible, on the character of the appendages, to place the Anas- 
pidacea in either the Peracarida or Eucarida, or any other 
division of the Malacostraca. The mandible is of a Peracaridan 
TEXT-FIG. 33. 
hr 
B. 
2} SY 
Neng 
End of telson. Aa. In Anaspides tasmanie. 8B. Paranaspides 
lacustris. 
type, but lacks the lacinia mobilis; the maxillz are possibly 
nearer those of the Peracarida than of the other divisions, 
but a palp is still present on the first maxilla and the exopodite 
of the second maxilla is greatly reduced. 
On the other hand the otocyst on the first antenne is paral- 
leled only by the Decapoda, as is also the spermatheca at the 
base of the last thoracic limbs, while the copulatory styles are 
also Kucaridan. 
The segmentation of the thoracic limbs is also very inter- 
esting as affording us a primitive condition from which that 
of the Peracarida on the one hand and that of the Kucarida 
on the other can be severally derived. We have seen that 
