44 J. Wood-Mason — On JVejyJirojpsis Slewarti. [No. 1, 



lateral angles, are stronger than in Neplirops. The outer plate of the lateral 

 elements of the swimmeret is moveahly articulated at its posterior third 

 as in the rest of the Astacidce, but the sutural line is curved and the posterior 

 margin of the proximal and larger division exhibits hardly a trace of the 

 overlapping dentieulatious seen in other Astacidce. 

 Length from tip of rostrum to the posterior margin of telson, .... 98 mm. 



Length of carapace in middle line, . , , , 42 mm. 



„ „ postabdomen, 56 mm. 



therefore the postabdomen : carapace (rostrum inch) : : 1^ : 1 exactl3^ 

 and the length of body: that of postabdomen : : If : 1 „ 



The only specimen (a female) obtained was dredged in from 2 GO to 300 

 fathoms about 25 miles off lloss Island on the eastern coast of the Anda- 

 nians. That the specimen was really brought up from this great depth is 

 certain from the unmistakeable signs of crushing from contact with the lip 

 of the dredge, from its position in the dredge bag and from its firmly ad- 

 herent greenish coating which appears to indicate that like Calocaris Mac- 

 Andreweae it was a burro wer. 



In conclusion I have to thank Captain Beresford, the commander of the 

 vessel, for his skilful management of the sounding-line and for the zeal display- 

 ed by him in carr3dng out my wishes during our too short cruise. 



I have much pleasure in coimecting with this extremely interesting 

 species the name of Major General Donald M. Stewart, C. B., Chief-Com- 

 missioner of the Andaman and Nicobar Islands, to whose ever ready help 

 the success of my trip was so largely due. 



Explanation of Plate IV. 



Fig. 1. JSFepJiropsis Stewarti, ? , nat. size. 



Fig. 2. Upper view of carapace of the same. 



Fig. 3. Swimmeret of AT. Siewarti. 



Fig. 4. „ „ Neplirops Norvegicus. 



Fig. 5. Inferior view of antennary region of N. Stewarti. 



Fig. 6. „ „ „ „ „ JSr. Norveyicus. 



Fig. 7. Sternal region of N. Stewarti. 



Fig. 8. „ „ „ AT. JSforvegicus. 



