402 GAEL BOVALLIUS, AMPHIPODA HYPEK1IDEA. I. 2. ANCHYLOMEKID^E. 



Euprimno macropus. 



epine, en arriere; le troisieme egalement court, tres etroit a la base, renfle en demi-lune, et 

 aigu a ses extremites; quatrieme article presque aussi grand que le premier, large, et aplati, 

 arme de fortes epines a son cote anterieur; cinquieme, grele, plus long que le quatrieme, cylin- 

 drique et un peu cotirbe, termine par un ongle assez long, tres aigu et un peu courbe; sixiemes 

 pieds beaucoup plus courts, a premier article large et plat; deuxieme court, inerme; troisieme 

 deux fois plus long; quatrieme aussi long que le premier, etroit et arme d'epines en avant; cin- 

 quieme aussi long que le precedent et termine par un ongle aigu; septiemes pattes encore plus 

 courtes; a premier article large et aplati, ayant les autres articles cylindriques et greles.» 



In 1840 H. Milne Edwabds gave the following description: 



»Antennes setacees, plus longues que la tete et composees de deux articles. Hanche des 

 pattes de la seconde paire elargie. Antepenultieme article des pattes des troisieme, quatrieme, 

 cinquieme et sixieme paires epineux sur le bord; dernier article des pattes de la septieme paire 

 aplati et obtus au bout; appendices abdominaux des trois dernieres paires troques au bout.» 



In 1888 Stebbing gave a detailed description of the species, and observed himself 

 (1. c. p. 1445) that the dorsal spines on the last pergonal segment and the first two 

 pleonal are not developed in very young animals, and that the front margin of the 

 carpus of the fifth pair of perseopoda is almost smooth in the same stage of growth. At 

 the same time he described the three above named new species, which, in my opinion, are 

 only varieties of the old species. 



In order to prove the variation of the dentition on the front margin of the carpus 

 in the fifth pair of perreopoda I give here a table showing the number of those teeth on 

 the carpus of the right (r) and left (l) leg of the fifth pair in 15 specimens from different 

 localities and in different stages of growth. The big figures (1) signify long teeth, the 

 small figures (i) short ones. The bifid tooth at the apex of the carpus is not included. 



Length of the animal 1,5 mm. Ind. Oc. 



» » » » 2,5 mm. S. Atl. 



Sp. 



1 



Sp. 



2 



Sp. 



3. 



Sp. 



4 



Sp. 



5 



Sp. 



6 



Sp. 



7 



Sp. 



8 



4 mm. S. Atl. 

 4,5 mm. Ind. Oc. 



5 mm. Antarct. Oc. 



6 mm. S. Atl. 

 6,5 mm. S. Atl. 

 6,5 mm. S. Atl. 



I i3 



r l I2I22 

 I I2I2I 



r 3 1 1 1- 2 1 3 

 / 2 1 2 1 3 1 1 



r 2 2 1 2 1 3 

 / I2I3I2 



r I3I4I4I2 



I 1 2 1 4 1 3 1 2 



r 1 1 1 3 1 3 1 1 



I 1 2T3 1 2 1 1 



r 1 3 1 4 1 2 1 

 I I2I3I3T 



f li I3I3I2 

 I I2I4I3I1 



