o:>(> "ENDEAVOUR" SCIENTIFIC RESULTS. 



In the other and larger female of P. macleayi (Reg. 

 No. P. 1438), the first, second, and fifth legs are pro- 

 portionately about as long as in the cotype; the third 

 legs are shorter, scarcely reaching the base of the notch 

 between the spine and blade of the antennal scale, while 

 the fourth legs instead of reaching only the end of the 

 antennal peduncles, slightly exceed the second pair in 

 length. The third maxillipeds extend beyond the 

 antennal peduncle by one-half the length of their 

 terminal joint. 



The legs of the largest male are relatively not unlike 

 those of the two preceding specimens ; the first legs only 

 reach one-third the length of the distal segment of the 

 antennal peduncle, attaining thus about the middle of 

 the penultimate joint of the third maxillipeds; the fifth 

 pair five-sevenths the length of the scale ; the second pair 

 of legs is regenerating; the third legs about reach the tip 

 of the spine of the anteunal scale ; the fourth scarcely 

 to the end of the antenual peduncle. The third 

 maxillipeds reach about half the length of the spine of 

 the anteunal scale, and exceed the peduncle by about the 

 length of their terminal joint. 



As in P. t on oca-ox, the symmetrical petasina 

 "consists of the two rigid segments tightly folded in all 

 their length, interlocked all along their anterior margin, 

 and in close apposition along the greater part of their 

 posterior margin, so as to form a compressed tube. 

 Distally the tube ends in a pair of large gargoyles, the 

 posterior lips of which are convoluted like the mouth 

 of a personate corolla.- 1 The softer, more or less, fleshy 

 terminal flaps of the petasma forming the "gargoyles." 

 represent, as it were, the produced inner margins of the 

 basal elements, twisted forward and upward (from a 

 ventral point of view), so that the produced horns of the 

 externo-distal angles of the basal pieces are concealed 

 except for their tips in ventral view. In P. macleayi 

 these terminal flaps or "gargoyles" appear to represent 

 the continued growth of the medial two-thirds of the 

 anterior margin and the inner margin of the basal 

 elements together, bent over to form domed, "billowed" 

 caps or hoods over the extremities of the basal pieces, 

 about meeting, but not obscuring the blunt, moderately 

 produced externo-distal angles. In some respects the 

 petasma is not unlike that of P. tiffin! a, as figured by 



