
HALE—AUSTRALIAN CUMACEA 153 
fourth has four such tubercles in a transverse row and the fifth a pair, closely fol- 
lowed by a row of four nearer its hinder margin. 
First pleon somite with six large dorsal tubercles arranged as on last pedi- 
gerous; second and third somites each with two dorso-lateral tubercles on each side, 

Fig. 4. Nannastacus clevatus, lateral view and dorsal view of cephalothorax of type male 
(% 44), 
placed one behind the other, and scarcely dilated distally; fourth and fifth with 
three dorso-lateral tubercles ou each side, the first smaller than the others on both 
somites; these ave more like blunt spines and on the fifth somite the granules are 
themselves spine-like towards the rear; telsonie somite as long as wide, rounded 
posteriorly and with small acute projections, its dorsum with irregular granules 
but no large tubercles; fifth somite distinctly longer than the others, less than 
half as long again as broad. 
G 

Mig. 5. Nannastacus clavatus, paratype male; ¢, pace, anterior portion of carapace (X% 86) ; 
prn, and plu, large tubereles from back of pedigerous and pleou somites; ant. and prp., first 
antenna und peracopods (% 86); urop., uvopod with fifth pleon and tensonic somites (x 86). 
At prn. and pln. in fig. 4, tubercles from pedigerous somites 2, 4 and 5, and 
pleon somites 1, 2 and 4 show the gradual change from dilated to spiniform pro- 
jections. 
First jomt of pedunele of first antenna twice as long as third which is 
shorter than second. 
