33G AMPinroDA nokmalta. 



superior margin siibapically excavated to receive the sliort flagelliira. 

 Inferior antenna) five-jointed. First pair of gnathopoda complexly 

 siibchelate ; second pair not siibchelate. Third and fourth pairs of 

 pereiopoda largely dilated, having the lemaining joints as long as 

 the basa ; fifth pair rucHmentary. Posterior ])air of plcopoda bi- 

 ramous, fohaceous. Telson nearly as broad at the base as the pre- 

 ceding segment of the pleon. 



This genns is very closely allied to Pronoe, but differs in the form of 

 the superior antennae and of the gnathopoda, and in the fusion of the 

 fourth and fifth segments of the pleon into one. 



1. Aniphipronoe cuspidata, n. s. (Plate LIII. fig. 5.) 



Three anterior segments of the pleon each postero-dorsally produced 

 to a point, but not elevated into a tooth. Superior antennae short, 

 having the peduncle thickly covered on the inferior surface with 

 long hairs ; flagellum uniarticulate, tipped ^dth two long auditorj' 

 cilia. Inferior antenna) having the first three joints subequal ; 

 third superiorly fringed with equidistant cilia ; foiu-th (damaged). 

 First pair of gnathopoda having the meros distally broad ; carpus 

 broad, infero- anteriorly produced to half the length of the propodos, 

 margins smooth ; propodos long- ovate ; dactylos arcuate, pointed : 

 second pair having the carpus not infero-anteriorly produced. 

 Third pair of pereiopoda having the bases dilated, a little broader 

 than the coxa ; ischium articulating at the apex ; remaining joints 

 together rather longer than the basos : foui'th pair having the bases 

 more dilated than that of the third, and with the remaining joints 

 not so long: fifth pair short; basos dilated; remaining joints ob- 

 solete. Antepenultimate and penultimate pairs of pleopoda arising 

 from the postero-inferior angle of the foui'th segment of the pleon ; 

 ultimate reaching but little beyond the telson. Telson triangular. 



Length ^ths of an inch. 



Hab. In the sea near the Cape of Good Hope (taken by Captain 

 Raynaud in Feb. 1829). 



7. PRONOE. 

 Pronoe, Guerin, Mag. de Zool. vii. 183G. 

 " Cephalon large, filled with the eyes, rounded, advanced, having the 

 frontal surface considerably rounded, excavated anteriorly to receive 

 the superior antennae, with the epistoma* rather prominent. Su- 

 perior antennae shorter than the cephalon, flat, composed of three 

 joints, of which the first two are short. Inferior antennae inserted 

 near the mouth, slender, cylindrical, setaceous, and formed of five 



* '• Tubercule buccal." 



