50 



RECORDS OF THE AUSTRALIAN MUSEUM. 



so on the two preceding terga. The last tergum is shorter than 

 long (in the proportion of 4-5-50), with moderately produced and 

 rounded posterior margin, and with a distinct median sulcus. 



Antennae 14 mm. in length, reaching at least as far back as 

 the anterior margin of the fourth segment; 16-17 jointed, with 

 the basal 7-9 joints naked. 



Dental plates of maxillipedes as long as wide with four teeth, 

 of which the three internal are more or less coalesced, the fourth 

 standing apart. The anterior fourth of the coxosternum of the 

 maxillipedes is sulcate in the middle, the sulcus meeting back- 

 wards a transverse sulcus more or less distinct, sometimes hardly 

 visible, at any rate very irregular. Behind the middle a shallow 

 impression is generally to be seen. 



.Sterna from the second to the twentieth with two entire longi- 

 tudinal sulci. Last sternum hardly longer than wide at the 

 base, truncate at the apex with sides converging. Another 

 specimen has the last sternum rounded at the apex and provided 

 behind the middle with a very large and deep circular impression, 

 which has to be considered as abnormal. 



Legs of the first pair slender. On all the legs the spines are 

 wanting at the distal end of the first tarsal joint, but are present 



at the base of the claw. The 

 posterior angle of the coxo- 

 pleurse of fifteenth pair is pro- 

 duced in a very small conical 

 process, not longer than broad 

 at the base, tipped with two 

 tiny spines. Posterior margin 

 armed laterally with a minute 

 spine (Fig. 5). The porous 

 area is wider than the pleural 

 part, thrilled with minute 

 pores and leaching the poster- 

 ior margin of the cuxa?, leaving 

 untouched a short and narrow 

 linear space in front of the 

 process. Joints of the anal legs 

 short and stout ; the measure- 

 ment of the first three joints 

 give the following figures : — 



liFig, 5. C. brevispinatus sulcalus, 

 Brolemann. Last leg bearing seg- 

 ment, ventral view. 



Femora : Length 4 mm. ; breadth at the apex 2-25 mm. 



Patella : 

 Tibia 



2-80 mm. ; 

 210 mm. ; 



1-50 



