BORRADAILE— ON THE PONTONIIN^ 



395 



Pontonella glabra, Heller, Ver. zool. -bot. Ver. Wien, 1856, p. 629, PL 9, figs. 

 1—15. 



Alpheus edivardsii, Couch, Journ. Linn. Soc. Lond., Zool. v. p. 210 (1860). 

 Typton spongiosus, Bate, Ann. Mag. Nat. Hist. (4), ii. p. 119 (1868). 

 Mediterranean. Cornwall. In sponges. 



2. Typton houvieri Nobili, 1904. 



Bull. Mus. Paris, 1904, v. p. 233; Ann. Sci. Nat. (9), iv. p. &7, PL 3, fig. 4 

 (1906). 



Jibuti. 



EXPLANATION OF PLATES 52—57. 



Fig. 1. Periclimenes spiniferus de Man, 1902 (Plate 52). a, side view; b, dorsal view of cephalothorax ; 

 c, dorsal view of antennule and antenna with adjacent structures : a = coxocerite, /3 = basicerite 

 (outer division), S = scale, e = base of eyestalk, ii = second joint of endocerite ; c', ventral view of 

 base of antenna, lettering as in c, also /3* = inner division of basicerite, 7 = tubercle for 

 opening of green gland, i = first joint of endocerite; d, ventral view of left mandible; d', end 

 of molar process of the same; d"\ end of molar process of right mandible; d", anterior 

 view of right mandible ; e, maxillule ; /, maxilla ; g, 1st maxilliped ; h, 2nd maxilliped ; 

 i, 3rd maxilliped, removed with arthrobranch ; k, chela of 1st leg ; I, chela of 2nd leg (larger of 

 pair); m, walking leg; n, 1st abdominal limb of male; 0, 2nd abdominal limb of male; 0', 2nd 

 abdominal limb of female ; p, dorsal view of telson ; q, paragnatha. 



Fig. 2. Urocaridella gracilis Borradaile, 1915 (Plate 53). a, e, f, g, h, i, n, 0, p, as fig. 1 ; 

 d", anterior-ventral view of right mandible ; 0", 3rd abdominal limb of male. 



Fig. 3. Urocaris psamathe de Man, 1902 (Plate 53). e — i, as fig. 1. 



Fig. 4. Palcemonella elegans Borradaile, 1915 (Plate 53). Side view of forepart of body. 



Fig. 5. PalcBTnonella longirostris Borradaile, 1915 (Plate 53). a, as fig. 1 ; d"", anterior-ventral view 

 of left mandible. 



Fig. 6. Periclimenes frater Borradaile, 1915 (Plate 53). c, basal joint of right antennule in dorsal 

 view ; m, end of a walking leg. 



Fig. 7. Periclimenes incertus Borradaile, 1915 (Plate 53). Side view. 



Fig. 8. Periclimenes brocki (de Man), 1887 (Plates 53, 54). /, g, h, i, as fig. 1. 



Fig. 9. Periclimenes ceratophthalmus Borradaile, 1915 (Plate 54). b, as fig. 1 ; a, side view of carapace. 



Fig. 10. Periclimenes cornutus Borradaile, 1915 (Plate 54). a, b, as fig. 1. 



Fig. 11. Periclimenes affinis Borradaile, 1916 (Plate 54). a, b, e, g, h, i, p. as fig. 1. 



Fig. 12. Periclimenes dubius Borradaile, 1915 (Plate 54). a, b, p, as fig. 1. 



Fig. 13. Periclimenes nilandensis Borradaile, 1915 (Plate 54). a, b, as fig. 1. 



Fig. 14. Periclimenes seychellensis Borradaile, 1915 (Plates 54, 55). a, b, e, f, h, i, as fig. 1. 



Fig. 15. Periclimenes hrocketti Borradaile, 1915 (Plate 55). a, b, as fig. 1. 



Fig. 16. Periclimenes suvadivensis Borradaile, 1915 (Plate 55). Side view. 



Fig. 17. Periclimenes kolumadulensis Borradaile, 1915 (Plate 55). I, I', chelae of second pair. 



Fig. 18. Periclimenes compressus Borradaile, 1915 (Plate 55). a, b, as fig. 1. 



Fig. 19. Periclimenceus fimbriatus Borradaile, 1915 (Plate 55). a, b, i, I, m, p, as fig. 1. 



Fig. 20. Periclimenceus robustus Borradaile, 1915 (Plate 55). a, b, f, g, h, i, as fig. 1. 



Fig. 21. Harpiliopsis beaupresi (Audouin), 1825 (Plate 55). Third maxilliped. 



Fig. 22. Harpiliopsis depressus (Stimpson), 1860 (Plate 56). e — -i, as fig. 1. 



50—2 



