662 PATAGONIAN EXPEDITIONS : ZOOLOGY. 



A. Milne-Edwards describes the rostrum of this species as bifid with 

 two lateral teeth : in most of our individuals, however, it is three-spined, 

 the median spine being entire ; only in rare cases there is a slight emar- 

 gination or notch at its distal extremity. 



ZOOGEOGRAPHICAL REMARKS. 



Among the mayiue /onus collected by Mr. Hatcher, four groups are 

 distinguishable according to their geographical range : 



1 . Cosmopolitan. 



Lepas anatifera L. 



2. IVest American (California to Patagonia). 



Balanus IcEvis Brug. (also in the Atlantic, northward to south- 

 ern Brazil). 



3. Antarctic types. 



1. lais pnbescens {T>2Ln.), also: S. Georgia, New Zealand, 



Tasmania, Kerguelen. 



2. Exosphceroma gigas (Leach), also : New Zealand, Auck- 



land, Australia, Kerguelen. 



3. Cymodocea darwini Cunn., also : Kerguelen. 



4. Dynameiie eatojii Mrs., 2AS0: Kerguelen. 



5. Cassidina emarginata M.-E., also : S. Georgia, Kerguelen. 



6. Munida subrugosa Dan., also : New Zealand, Auckland, 



Campbell, Australia. 



7. Halicarcimis planatits [V.), 2i\so : New Zealand, Auckland, 



Kerguelen, Marion, Prince Edward. 



4. Local types, restricted to so called Magellanian province. 



I . Elminius kingi Gr. 



2 



3 



4 



5 

 6 



7 

 8 



9 

 10 



Edotia tiibercttlata Guer. 

 Rocinela australieusis Sch. & Mein. 

 ExospJicsroma lanceolatitm (Wh.). 

 Serolis paradoxa (P.). 

 Lithodes antarctica Jacqu. 

 Paralomis granulosa (Jacqu.). 

 Munida gregaria (F.). 

 Eurypodiiis latreillei Guer. 

 Hypopeltarium spinosidum (Wh.). 



