80 STALK- AND SESSILE-EYED CRUSTACEA 
Family III. ALPHEIDZ. 
Alphéens, M. Edw. (part) Hist. Nat. Crust. ii, p. 345, (1837). 
Palemoniens, M. Edw. (part) Hist. Nat. Crust. 1, p. 367, (18387). 
Alpheide, sub-family Alpheine, Dana, U.S. Explor. Exped. xin, 
Crust. parti, p. 534, (1852). 
Crangonide, sub-family Lysmatine, Dana, U.S. Explor. Exped. xu, 
Crust. part. 1, p. 533, (1852). 
Rostrum usually short or obsolete. First pair of legs thicker than 
the second. Second pair slender, elongated, with the wrist annulated. 
Mandibles bilobed, or rarely simple, and incurved, not palpigerous. 
HIPPOLYTE. 
Fippolyte, Leach, (part) Trans. Linn. Soc. xi, p. 347, (1815); 
M. Edw. (part) Hist. Nat. Crust. 1, p. 370, (1837); Dana, (part) U.S. 
Explor, Exped. xii, Crust. part i, p. 534, (1852). 
Rostrum long and laterally compressed, nearly always dentate, 
immobile, prolonged backward upon the surface of the carapace as a 
crest. Eyes prominent. Internal antenne rather short, with two 
flagella, of which one is larger. External maxillipeds slender, rather 
long. First pair of legs short, but stouter than the rest. Second 
pair with the wrist multi-articulate. Abdomen suddenly deflexed in 
the middle. Caudal appendages lanceolate, ciliate on the margins. 
85. Hippolyte spinifrons. 
Hippolyte spinifrons, M. Edw. Hist. Nat. Crust. ii, p. 877, (1887) ; 
White, Dieffenb. New Zeal. ui, p. 267, (1843). 
Rostrum rising near the middle of the gastric region, scarcely reach- 
ing beyond the first joint of the internal antennex, nearly straight, 
slender, without teeth below, with five teeth above ; suborbital spines 
very large and strong. External maxillipeds very long, ending in a 
cylindrical jomt which reaches considerably beyond the scale of the 
external antenne. Anterior legs of moderate size, not reaching 
beyond the peduncle of the external antenne. Second pair as long 
as the third pair, with a multi-articulate wrist. Abdomen not 
geniculate, terminal plate armed with two pairs of strong spines. 
Length rather more than | in. (M. E.). 
New Zealand (Mus. Paris). 
I have seen no specimens of this species. 
