REPORT ON THE CRUSTACEA MACRURA. 7A7 



pair of antcnnaj, ovate, and furnished at the middle of the outer margin with a minute 

 denticle. The telson is straight and longer than the lateral plates of the rhipidura. 

 The appendages are generic in character. The carapace has eight longitudinal carina, of 

 which the two dorsal on each side of the median line are denticulated in then- entire 

 length, the other two are smooth except for two hepatic teeth on each side close behind 

 the antennal angle. The first somite of the pleon is furnished with three vertically 

 directed tooth-like cusps, the centre one of which is repeated on the anterior and 

 posterior division of each succeeding somite so as to form an interrupted carina that 

 increases in character by losing its denticulation untd it reaches the posterior division 

 of the fifth somite, where it is flanked by two oblicmely directed ridges, after which it 

 is continued to the posterior extremity of the pleon, where it is produced to a strong 

 pointed cusp. Each somite after the first has the lateral coxal plates deep and armed 

 with two strong teeth, excepting the last, which has only one. 



This species was taken in the southern Indian Ocean, halfway between the Cape and 

 Kerguelen Island. 



Glyphocrangon regalis, n. sp. (PI. XCIII. fig. 3, 4). 



Carapace one-half the length of the pleon, produced anteriorly to a strong, 

 pointed rostrum about one-half the length of the carapace, having the apex suddenly 

 curved upwards, furnished with a delicate elevated thread dike line down the middle, 

 traceable as far as the gastric region ; it is armed on each side with a strong tooth 

 corresponding with the anterior extremity of the opthalmopod, with a second anterior to 

 the frontal region, and a third smaller, posteriorly on the same elevated ridge. Frontal 

 margin broad, armed with two large spine-like teeth, one corresponding with the external 

 canthus of the orbit, the other with the fronto-lateral angle of the carapace, posterior to 

 which, on the hepatic region, is a large laterally compressed tooth. The dorsal surface of 

 the carapace is longitudinally traversed on each side of the median line by four strong 

 ridges. The two dorsal are broken up into long flat tubercles, the two lateral are both 

 smooth and even, and without a tooth -like projection on the anterior extremity ; posterior 

 to the cervical fossa, between the several ridges, there are coarse granulations arranged 

 in longitudinal rows. 



The pleon has a row of teeth forming an interrupted carina that traverses the median 

 line, commencing on the first somite and terminating in a small tooth on the anterior 

 surface of the telson. 



The lateral margins of the coxal plates are armed with two large teeth except the 

 first, which has a small point hidden beneath the succeeding somite, and the sixth, which 

 has only one large tooth directed posteriorly. 



Third and fourth pairs of pereiopoda terminating in a cylindrical pointed dactylos, 



