456 Rev. Canon A. M. Norman on British Schizopoda 
Fam. II. Euphausiide. 
Maxillipeds elongate, pediform ; exopodite well developed, 
epipodite rudimentary or wanting. Legs without dactylus, 
posterior pairs more or less imperfectly developed. Branchiz 
wholly exposed to view. Egg-pouch, when present, not 
formed of plates attached to bases of legs. Caudal limbs 
(pleopods) well developed in both sexes. Phosphorescent 
organs present at the bases of the first and of the penultimate 
legs and also on the abdomen between the pairs of pleopods*. 
Inner uropods not furnished with an auditory apparatus at 
their base. Telson very slender and tapering to an acute 
point, giving off on either side at ashort distance from the 
extremity a very large spine-formed process, which extends far 
beyond the end of the telson itself. 
Fam. III. Myside. 
Maxillipeds strong, with exopodite well developed, nata- 
tory, and the epipodite lanceolate and projecting within the 
branchial cavity. First legs differing from the following, 
used as gnathopods; remaining legs slender, usually without, 
rarely with, a terminal nail. No true branchie present. 
Marsupial pouch usually composed of two or three pairs + of 
leaf-like processes springing from the hinder pairs of legs. 
Pleopods in female small and rudimentary, in male natatory 
and often remarkably modified to assist in copulation. Inner 
uropods with an auditory apparatus at the base. No phospho- 
rescent organs. Telson very variable in form, but never as 
in the Euphauside. 
Fam. I. Lophogastride. 
Genus LOPHOGASTER, M. Sars. 
Carapace tridentate in front, the lateral teeth as much 
developed as the central, this portion of carapace 
advanced in front of the eyes, the peduncles of which 
are completely concealed by it, and the eyes them- 
selves are protruded on either side. Peduncle of 
* The genus Lentheuphausia is, however, not furnished with these 
organs. 
ft In the genus Boreomysis there are seven pairs. 
