ECHDfODERMATA. 



41 



16. M. australis, sp. nov. Oval, elevated, vertex sub-anterior; 



surface covered with small irregularly placed tubercles, most of which 

 are creuulated rouud the margin ; mouth eccentric. Length, 3"5 ; 

 breadth, 2"75 ; height, 1-75. 

 Localities. — Cob den. 



EUPATAGUS. 



Oval ; ambulacra unequal ; some large tubercles between the petals, 

 limited by a peripetalous fasciole. 



17. E. greyi, sp. nov. Brissus greyi., Sector, Cat. Col. 3Ius., 

 1870. Shell thin, oval; vertex posterior; interambulacral areas with 

 many tubercles, each situated on a crenulated base, posterior area 

 smooth ; ambulacra petaloid, in broad shallow grooves, the posterior 

 pair shorter ; pores of the anterior odd ambulacrum obliterated ; an- 

 terior groove deep, not extending to the vertex ; peripetalous fasciole 

 distinct, not sinuated. Leugth, 4i7 ; breadth, 3-7. 



Localities. — Cobden. 



AMPHIDOTUS. 



18. A. SUlcatUS, sp. nov. Orbicular-cordate ; anterior groove 

 deep and angled on each side ; posterior lateral ambulacra shorter, 

 both pairs slightly curved. Length, 2*7 ; breadth, 2-9. 



Localities. — Oamaru. 



KLEINIA. 



Vertex sub-central ; lateral ambulacra sunken, confluent near the 

 vertex, where the inner pores are nearly obliterated, anterior pair di- 

 verging, posterior pair nearly parallel. 



19. K. COnjuncta, sp>. nov. Ovato-cordate, depressed, edge 

 thin, tubercles on the back small and equal ; apex slightly anterior ; 

 ambulacra sunk in deep grooves ; anterior pair sub-petaloid, bent rather 

 backwards ; posterior pair lougitudinal, coalesccnt nearly as far as the 

 apices, which diverge ; anterior odd ambulacrum sunk in a deep groove 

 that forms a deep notch in the anterior margin, pores distinct ; peri- 

 petalous fasciole indistinct. Length, Vbo ; breadth, I Go ; height, o. 



Localities. — Grey Eiver. 



In form and in the presence of an anterior groove this species 

 approaches Tripylus, but the longitudinal position of the posterior 

 pair of ambulacra keep it out of that genus, while the distinct pores 

 of the anterior ambulacrum take it out of Bris.sus. 



BHISSUS. 



Anterior ambulacra rather transverse, posterior longitudinal, odd 

 ambulacra almost obsolete ; apex eccentric. 



20. B. eximius, Zi/tel, Toy. Xovara, Palce., p. G5, pi. xii., / 3. 

 Large, oblong, depressed, keeled behind, papillose ; aj)^'X anterior ; 

 ambulacra petaloid, unequal ; the anterior obsolete, hardly conspicuous ; 



G 



