REPORT ON THE CRUSTACEA MACRURA. 689 



Second antennas possessing a scaphocerite that reaches as far as the distal extremity 

 of the peduncle of the first pan. 



The oral appendages have not been examined. 



The appendages of the pereion are uniform, excepting the posterior pair of 

 pereiopoda, which is long, slender, and reaches to the distal extremity of the first 

 antenna. 



The pleopoda. are short and biramose ; the sixth pair is subequal in length with the 

 telson. 



Length, entire, ...... 9 mm. (0 - 3 in.). 



„ of carapace, . . . . . 3 - 5 ,. 



„ of rostrum, . . . . . . 0"5 „ 



,, of pleon, ...... 5 - 5 ,, 



Habitat. — Cape Verde Islands, April 26, 1876. 



This species resembles Anebocaris quadroculus (PI. CXXIII. fig. 1), in which the 

 anterior pair of pereiopoda is chelate, but differs from it in having a shorter rostrum. It 

 appears to be in a younger stage of development, as all the pereiopoda except the 

 posterior pair are furnished with long basecphyses, and none of them exhibit the chelate 

 condition shown in the second pair of the preceding species. 



Kyptocaris, 1 n. gen. 



Animal slender. Carapace short, anteriorly produced to a horizontal rostrum. 

 Frontal margin having the orbit slightly excavate ; lateral angle produced to a sharp 

 tooth. 



Third somite of the pleon as long as the preceding two, and dorsally arcuate ; 

 fourth somite articulating at a right angle with the preceding ; sixth somite long and 

 laterally compressed. 



Telson long and slender. 



Ophthalmopoda long, narrow, and articulating by a slender pedicle. 



First pair of antennas biflagellate. 



Second pair having a slender flagellum and a long and foliaceous scaphocerite. 



Second gnathopod long, slender, and seven-jointed. 



First pair of pereiopoda short and simple. Second pair chelate. Third, fourth, 

 and fifth pairs simple and subecmal. 



Posterior pair of pleopoda subequal in length with the "telson. 



Geographical Distribution. — There is only one species, and of that but one 

 specimen, in the collection. It was obtained in the Philippine Sea. 



1 xuvtos, bent; »«(/;, shrimp. 



(ZOOL. CHALL. EXP. — PART LII. 1887.) Fff 87 



