174 Memoirs of the Indian Museum. [Vol,. IV, 



straight, the others, situated at the distal end behind the articulation of the ultimate 

 segment are stout and very strongly recurved. The endopod is curved outwards. 

 Fukuda does not give any details of the disposition of setae on the inner uropod and on 

 the last segment of the outer uropod, but from his figure it appears that they exist only 

 on the distal half of the outer margins as in G. herdmani and drepanophorus. 



In other respects G. spinoso-carinatus appears to resemble the two preceding species 

 closely ; but it is much narrower in form, the greatest breadth being less than one- 

 seventh the total length. 



Only two examples are known, the largest being 28-5 mm. in length. They are 

 recorded by Fukuda from Jogashima, Sagami Prov., Japan. 



9. Gonodactylus brevisquamatus, Paulson. 

 Plate X, figs. 115, 116. 

 1875. Gonodactylus brevisquamatus, Paulson, Réch. Crust. Mer Rouge, p. 127, pi. xxi, figs. 3~3g- 

 1906. Gonodactylus brevisquamatus, Nobili, Ann. Sei. Nat. Zool. (9), IV, p. 331. 



The rostrum is sharply trispinous as in the three preceding species ; the antero- 

 lateral angles of the carapace are acute. 



In the middle of the sixth somite there are two smooth and broad elevations, 

 placed parallel to one another in the male, but posteriorly divergent in the female. 

 The lateral margins are swollen, but scarcely car in ate, and between them and the sub- 

 median elevations there is on each side a narrow intermediate keel. There are no 

 spines on the posterior margin. 



The telson (figs. 115, 116) is broader than long, and at its distal end bears two pairs 

 of large teeth, the submedians and intermediates. The former are separated by a 

 large rounded emargination and are about twice the length of the latter ; an angular 

 incision, reaching to the same level as the median emargination, divides the submedians 

 from the intermediates. There are no spinules on the inner edges of the submedian 

 teeth. The lateral margins of the telson are evenly curved and there is no trace what- 

 ever of lateral teeth. In the middle of the dorsal surface there is a large, smoothly- 

 rounded, oval elevation placed between a pair of narrower and less prominent keels. 

 The base of the submedian spines is somewhat swollen and a ridge extends from near 

 the anterior margin to the apex of the intermediate spines. 



The peduncular segment of the uropods appears to resemble that of G. herdmani. 

 The basal segment of the exopod projects far beyond the articulation of the ultimate 

 segment. The proximal part of the outer margin is smooth {fide Nobili) or with a few 

 small spines {fide Paulson's fig.), while at the distal end there are two or three stout 

 spines which are very strongly recurved. The ultimate segment of the exopod is 

 covered with setae over its entire surface; the endopod is similarly clothed 1 and is 

 strongly curved outwards. 



Through the- help of my friend Dr. Caiman I am able to reproduce two figures of 

 this species from Paulson's very rare work. 



1 The setae on the surface of these segments are not shown in Paulson's figure. 



