APPENDIX. 



AMPHIPODA. 



NATATORIA. 



505 



AMPEL7SCIDES. 



(Vol. Lp. 137/*) 



Genus HAPLOOPS. {Lilljeborg.) 



Generic character. Closely allied to Ampelisca, but differs in 

 having the cephalon less anteriorly produced, and the organs of 

 vision reduced to two. 



HAPLOOPS TUBICOLA. 



Specific character. Superior antennae about one-third of the length of the 

 animal, ciliated beneath, without an accessory filament. Two pairs of gnatho- 

 poda small and hairy. First and second pereiopoda terminated by long stylate 

 fingers. 



Length, about half an inch. 



Haploops tulicola. Lilljeborg, Ofvers. af Kongl. Vet. Akad. 1855. 



Bruzelius, Skand. Amph. Gam. p. 88. Spence 

 Bate, Cat. Amph. B. M. p. 371. 



Ampelisca Esclirichtiil Lilljeborg, 1. c. 1852, p. 6. 



Cephalon anteriorly depressed, without a rostrum, having 

 the superior antennae affixed to the apex, about one-third the 

 length of the animal, and inferiorly ciliated ; inferior antennae 

 slightly longer than the superior : gnathopoda subequal, 

 hairy : first two pairs of pereiopoda with long stylate dactyla, 



