14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Gonodactylus spinosus Bigelow, 1893 

 Figure 5 



Gonodactylus spinosus Bigelow, 1893, p. 101; 1894, p. 493. — Borradaile, 1907, 

 pp. 210 [key], 212.— Bigelow, 1926, p. 579, figs. 1-2.— Manning, 1962, p. 3. 



Gonodactylus chiragra var. spinosus. — Lanchester, 1903, p. 454, pi. 23 (fig. 14). 



Gonodactylus demani var. spinosus. — Kemp, 1913, p. 165, pi. 9 (fig. 112). — Kemp 

 and Chopra, 1921, pp. 310, 311. 



Material.— 19, 21.0; Mauritius; N. B. Pike; lectotype; USNM 

 64773. 19, 20.5; same data; paralectotype; USNM 4295. 1 d\ 13.5; 

 19, 18.7; same data; USNM 120309. 1 cf, 14.8; between Neptune and 

 Triton Bastions, Galle Forte, Ceylon; from living Pocillopora, in 1-3 

 ft.; J. S. Garth, Sta. GA 64-16c; IIOE; Mar. 5, 1964; USNM 120308. 



Description. — Basal portion of rostral plate rounded antero- 

 laterally, anterior margins sloping posteriorly. 



Ocular scales small, low. 



Mandibular palp and 5 epipods present. 



Lateral processes of sixth and seventh thoracic somites rounded, 

 subequal in size. 



Sixth abdominal somite with 6 well-defined carinae, submedians 

 sharpest, all with posterior spines. 



Telson as long as or longer than broad, with 3 pairs of marginal 

 teeth; submedians thick, with movable apices, intermediates inflated, 

 apices small but sharp, lateral barely discernible but each with 

 small apical tubercle; most of dorsal surface of telson covered with 

 small spinules; median carina elongate, moderately swollen, smooth 

 dorsally, spinulose laterally and posteriorly; anterior submedian 

 carinae elongate, moderately swollen, usually completely covered 

 with small spinules, dorsal surface smooth in some specimens; carinae 

 of submedian teeth swollen spinulose lobes, each as broad as tooth, 

 completely covered with spinules; carinae of intermediate teeth 

 swollen, spinulose dorsally and laterally, lateral spinules obscuring 

 lateral tooth in dorsal view; numerous short submedian denticles 

 present; 2 intermediate denticles present, inner set posterior to outer 

 and to apex of intermediate tooth; lateral denticles present or absent; 

 ventral surface of telson without longitudinal carinae. 



Basal segment of uropod with low, rounded lobe on dorsal surface 

 inside dorsal carina; exopod with normal complement of setae, proxi- 

 mal segment with fixed distal spine on ventral surface; endopod 

 broad, margin completely setose; inner spine of basal prolongation 

 slender, shorter than outer. 



Color. — Faded in all specimens. 



Size.— Male, TL 13.5-14.8; females, TL 18.7-21.0. Other meas- 

 urements of female lectotype, TL 21.0: carapace length 4.6; fifth 

 abdominal somite width 3.5; telson length 2.8, width 2.8. 



