58 Chas. Chilton. 



peraeon and pleon segments are dorsally carinate and produced to a more 

 or less acute tooth but these teeth are sometims obsolete. In the form 

 described by PFEFFER ander the name BovaUia gigantea these segments 

 are carinate but the teeth only subacute and in them the posterior margin 

 of the pleural plate of the third segment of the pleon is slightly convex 

 and entire while in other forms this margin may be partly or wholly 

 serrate. AVhile the intermediate forms appear to be too numerous and 

 the transitions too gradual to justify the continued recognition of different 

 species it is possible that the forms may develop either in the direction 

 of BovaUia r/igantea as described above or of the form originally described 

 by Mr. STEBB1NG ander the name Eusiroides caesaris in which the dorsal 

 teeth are more acute and the posterior margin of the third segment of 

 the pleon is serrate. I have discussed the species in some detail in the 

 two papers quoted above. 



Eurymera monticiilosa Pfeffer. 



Kurymvra monticulosa PFEFFER 1888, p. 103, pl. 1. fig. 8. 

 CHEVREDX 1906, p. 59. fig. 34— 36. 



CHILTON 1912, p. 493. 



This species, originally described by PFEFFER from South Georgia, 

 has more recently been fully redescribed and figured by CHEYREUX from 

 specimens from Graham Land (Booth Wandel Island). A single specimen 

 from South Orkneys was in the collections of the „Scotia". 



In most respects it appears to correspond with those forms of the 

 family Pontogeneiidae in which some of the joints of the flagelluni of the 

 upper antenna are enlarged on the ander side but it differs from them 

 in the transverse dorsal ridges and the longitudinal lateral elevations of 

 the peraeon. 



Paranioera austrina (Bäte). 



Atylus austriuus SPENCE Bäte, Cat. Aniphipoda, Brit. 31us., p. 137, pl. 26, fig. 4. 

 Paranioera austrina Stebbing 1906, p. 363. 



Chilton 190!», p. 625 and 1912, p. 498. 

 Stebbingia gregaria PFEFFER 1888, p. 110, pl. 2, fig. 7. 



This is an exceedingly common species in Subantarctic seas and 

 being dominant and widely spread it presents in some localities local 

 variations and in some cases it is very difflcult to decide whether these 

 should receive separate names or not. With Stehbingia gregaria PFEFFER, 

 however, there is no difficulty. for the examination of the specimens in 

 the Hamburg Museum shows that they are quite the same as those 



