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



acute and directed forwards, more so than in any example of 5. latreillei (cf. figs. 4 and 

 14). Submedian carinae are present on all the abdominal somites and are also distinct 

 on the last three segments of the thorax. The following carinae end in spines : — 

 Carinae. Abdominal somites. 



Submedian . . . . . . 6. 



Intermediate .. .. .. (3) 4, 5, 6. 



Lateral .. .. .. (3) 4, 5, 6. 



Marginal .. .. .. (2) 3, 4, 5. 



The submedian carinae of the first five somites are strongly divergent posteriorly 

 (fig. 15). On the sixth somite between the submedian and intermediate carinae are 

 numerous well-marked vermiculate elevations. 



The upper surface of the telson (fig. 15) is closely covered with tubercles, which 

 in most cases form definite rows. The telson of the type specimen has already been 

 figured by Wood-Mason (1895, pi. iv, fig. 16), that of another example is illustrated 

 on PI. I, figs. 15, 16. The marginal teeth are well developed and without serrations 

 on their edges. There are two submedian denticles, seven intermediate and one lateral. 

 The inner margin of the bifurcate process from the base of the uropod bears from seven 

 to thirteen sharp spines (thirteen in the type). The lobe on the outer margin of the 

 longer spine is large and distinct. 



The specimens show no characteristic colouring, but, in one example, the black 

 spot on the eyestalk already noticed in the preceding species is very distinct. Accord- 

 ing to Wood-Mason the colour of one of the specimens in life was ' delicate salmon- 

 pink, darkest in the mid-dorsal line.' 



There are four specimens of this species in the Indian Museum : — 



^ Port Blair, Andamans. J.Wood-Mason. 1 ?, badly mutilated, ca. 75 mm. TYPK. 



-~ Yé River entrance, Burma. ' Investigator.' 1 9 , 49 mm. 



SÇ? Off Irrawaddy Delta. 



i5°2o/ N., 94°55'E. ' Investigator.' 1 9 , 70 mm. 



7 |p Off Akyab, Arakan Coast, 



34 fms., T-9°56' N.,92°32'E. 'Investigator.' 1 9 , 23 mm. 



In the last and smallest of the above specimens the spinous process at the antero- 

 lateral angles of the seventh thoracic somite is less well developed than in the others, 

 though still clearly distinct from 5. latreillei in this respect. The telson shows only 

 faint traces of rows of tubercles on its dorsal aspect, and on its ventral surface none 

 whatever can be distinguished. In other details this young example agrees well with 

 the larger individuals. 



Only the above specimens are known. 



3. Squilla gibba r Nobili. 

 Plate I, figs. 5 — 12. 

 1903. Squilla (Chloridella) gibba, Nobili, Boll. Mus. Torino, XVIII, no. 447, p. 30; p. 31, fig. 3. 

 This species is allied to the two preceding, but may be distinguished from them 

 by the following characteristics : — 



