igiS.] R. B. S. Seweli. : New speci&s of Copepoda. 3 



which the central or 3rcl one is expanded proximally to form 

 a spear-shaped base as in P. hinghami 9 . 



Mature females carry a pair of egg-sacs each containing 7 or 8 

 ova. 



The 1st antennae. — When folded back the antenna reaches to 

 the posterior end of the genital segment ; it consists of 21 segments, 

 having the following proportional lengths : — 



Segments ^ •' ^ '■ 3 : 4 : 5 : 6 : 7 : 8 : 9 : 10 : n : 12 : 13 : 14: 15 : 16 : 17: 

 60 : 43 : 19 : 26 : 24 : 39 : 24 : 24 : 34 : 49 : 55 : 62 : 64 : 64 : 65 : 61 : 48 : 

 18 : 19 : 20 : 21. 



48 : 52 : 59 : 70 = 1000. 



The 2nd antenna has the form usual in this genus, but 

 resembles that of P. hickmani in that it is armed with a row of fine 

 spines on the terminal segment of the endopodite. 



The maxilliped consists of the usual two basal segments and a 

 terminal portion of five segments. 



Basal I is provided with a stout spine-like seta at its distal 

 end. Basal 2 bears 3 setae on its margin and is armed with a 

 palisade of needle-like spines. 



The 1st pair of legs have the usual structure, both exopod and 

 endopod being composed of three segments. 



Basal I is armed with a row of spines on its external margin 

 about the middle of its length; exopod i bears a spine which 

 projects as far as or a little beyond the distal end of the segment ; 

 exopod 2 is unarmed ; exopod 3 bears two needle-like marginal 

 spines and a delicate end-spine which is not quite as long as 

 exopod 2 and 3 together. 



The endopod reaches to a point a little beyond the middle of 

 exopod 3. 



The 2nd pair of legs. — Basal i bears two transverse rows of 

 spines on its outer margin and basal 2 bears a few scattered 

 spines externally. 



The yd pair of legs. — There is a row of spines on the proximal 

 part of basal i, and a few spines distally on the same segment. 

 Basal 2 bears three or four spines. 



The 4th pair of legs. — There is a transverse row of spines 

 on basal i near the distal margin, but basal 2 is unarmed. 



The ^th pair of legs. — Each consists of a three-jointed exopod 

 only. The ist segment bears a few small spines on its outer 

 border about the middle of its length and is armed internally with 

 an oblique row of spines. The 2nd segment is produced at its 

 distal internal angle in a lamelliform process which terminates in a 

 sharp point : externally there is a single small needle-like spine. 

 The 3rd segment bears three spines and is produced externally in 

 a bluntly rounded process : of the three spines, the outer is 

 long and curved and in length is nearly equal to the whole limb ; 

 it is finely serrated along both borders : the middle spine is straight, 

 about half the length of the outer one and is serrated on both 

 margins : the inner spine is somewhat curved and is short and 



