COPEPODA. 283 



Posterior antennas, mandible, maxillipeds and natatory legs similar to those of 

 H. robusta. The 5th feet are more developed than in the previous species. Abdomen 

 4-jointed, rather less than half the length of the body. Genital segment large, much 

 wider posteriorly than in front ; 2nd, 3rd and 4th joints subequal in length and each 

 about as long as broad. Furcal rami long and narrow, about 5 times longer than 

 broad and equal to the combined lengths of the 3rd and 4th joints of the abdomen. 

 Three females were found in washings from Gulf of Manaar sponges. This Hermannella 

 is easily identified by its attenuated form, long abdomen, with the peculiar swelling of 

 the genital segment, and long furca. 



Hersiliodes leggii, n. sp. — Plate XVII. , figs. 12 to 21. 



Length of male 1'5 millims. : female unknown. 



. n , - - i t xi 1. 2. 3. 4. 5. 6. 7. 



Anterior antennae 7 -jointed ; the proportional lengths are : — — — — 



Posterior antenna 4-jointed, similar to that of other Hersiliodes. Mandible strong, 

 with a well-developed biting part. Maxilla more developed than in Lichomolgus, and 

 bearing a number of strong apical setae. The first maxilliped has the terminal joint 

 strongly toothed and also furnished with a setiferous digit. The second maxilliped 

 well developed, in general appearance resembling that of other species of the genus. 



Both branches of 1st to 4th natatory legs are 3 -jointed. Fifth legs foliaceous, 

 subquadrangular in shape, rather longer than broad, and furnished with 3 dagger- 

 like spines and 1 seta. Abdomen 5-jointed, fully half as long as the body. Furcal 

 rami short, about as broad as long. 



One specimen in washings from Gulf of Manaar sponges. This species, which we 

 name after Captain Legge, at present Inspector of the pearl banks, is easily 

 recognised from any other member of the genus by the proportional lengths of the 

 joints of the anterior antenna? and by the quadrangular 5th legs. 



Hersiliodes tamilensis, n. sp. — Plate XVII., figs. 22 to 25. 



Length, female 1'3 millims. ; male unknown. In general appearance resembling 

 the previous species. Anterior antennas 7 -jointed ; proportional lengths of the 

 . 1. 2. 3. 4. 5. 6. 7. 



J ° m S ' 10. 10. 5. 15. 10. 7. 11. 



Posterior antennas, mandible, maxilla, and 1st maxillipeds nearly as in H. leggii. 

 Terminal joint of 2nd maxilliped armed with 2 moderately strong spines and 2 small 

 setas. Natatory legs 1 to 4 somewhat similar to those of H. leggii. Fifth legs long 

 and narrow, about 3 times longer than broad, and armed with 3 dagger-like spines 

 and 1 seta. 



Abdomen 5-jointed, fully half as long as the body. Genital segment long and 

 broad, widest near the middle ; 2nd joint quadrangular in shape, about half as long 

 as the genital segment ; 3rd, 4th, and 5th joints shorter than broad, and in combined 



2 o 2 



