404 



DISCOVERY REPORTS 



Length 50 mm. Pre-labral length 21 mm., width 28 mm. Post-labral length 29 mm., 

 width 18 mm. 



Fore-body a little wider than long, wider than hind-body. Hind-body much wider 

 than long, not concave behind. Abdomen large, fully segmented ; somite 6 with a pair 

 of large dorsal spines at posterior angles, and a pair of small spines dorsally on posterior 

 margin. Telson elongated, nearly parallel-sided, with a transverse row of four large 

 spines showing under the skin about the middle of it. Posterior margin with small 

 points. 



Antennule with segment 2 of peduncle about half as long as segment 3 ; lengths of 

 segments as 34: 11:21. Peduncle of antenna stout, without outer spines; flagellum 

 slender, 50 mm. long. 



Fig. 16. Palinuurs sp., 50 mm. 



a. Dorsal view of head region. A i, antennule; A 2, antenna; C, cuticular elevation; E, eye-stalk. 

 b. Maxillule. c. Telson and uropods. 



Maxillule with only a vestige of the palp (Fig. i6b). Maxilla with large exopod fringed 

 with setae. Maxillipede i large, with epipod. Maxillipedes 2 and 3 with long setose 

 exopods. Maxillipede 3 and legs 1-4 with very small coxal spines. Leg 5 of five seg- 

 ments, without exopod. All gills present. 



Pleopods large, with appendix interna free. Uropods large, with spine on outer 

 margin of both branches, a basal muscular part distinct from a distal part which shows 

 internal striation (Fig. 16 c). 



There can be very little doubt that this Phyllosoma belongs to a species of Palinurus, 

 although it differs from P. vulgaris and P. gilchristi in not having a definite palp on the 

 maxillule. On the other hand, it agrees with them in the proportional length of the 

 segments of the antennular peduncle, which seems to be a very good generic character. 

 The only species of the genus from this region is P. lo?igimamis var. maiiritianus, Miers. 

 The great size of the Phyllosoma as compared with that of P. vulgaris is remarkable. 



