BY WILLIAM A. HASWELL, M.A., B.SC. 997 



preceding pairs ; the two last pairs are as long as the two first, 

 and stouter ; their propodos has a well-defined palm. 



The branchiae are narrow, cylindrical, and very long, about 

 two- thirds of the length of the basal joint of the appendage. 



The total length of the head and body is three-fifths of an inch. 



I have seen specimens of this species only in one locality — Port 

 Western, Victoria. 



Of well-established species of Proto, besides the Australian 

 forms there are, according to Mayer, only two, viz., P. bruuneo- 

 vittata, Haller, and P. ventricosa. O. F. Miiller. The foUowino- 

 synopsis will assist in showing the relations of the species. 



I. Limbs without spines. 

 a. Palm of posterior guathopoda with a 



defining tubercle, but without other 

 pi'ojections. 



1. A process on the large hand over 

 the articulation of the dactylos. 

 P. condylata. Haswell. 



2. No process on the large hand. P. 

 veyitricosa. O. F. Miiller. 



h. Palm of posterior gnathopoda armed 

 with teeth. P. Novce-HoUandue. 

 Haswell. 



II. Third joint of the posterior gnathopoda 

 with an acute spine. P. hrunneo- 

 vittata. Haller. 



B. Body armed with spines. Proto. spi7iosa. Haswell. 



Protella australis. 

 [Plate XLIX, figs. 2-4 ] 



Protella australis, Haswell. Proc Linn. Soc. New South Wales, 

 Vol. IV., p. 276, pi. XII., fig. 4. 



This species is characterised by the presence of a pair of short, 

 acute, forwardly-directed spines on the head and by the extreme 

 length of the superior antennse, which equal the body in length, 

 their peduncle being equal in length to the head and the following 

 three segments of the body ; the flagellum on the other hand is 

 comparatively short, not exceeding the third segment of the peduncle 

 in length : it is composed of seventeen articuli. The inferior 

 antennae are relatively short, being no longer than the first two 



A. Body without 

 spines. 



