486 Records of the Indian Museum. [Voi,. XXIV, 



portion of the margins of the telson is unarmed. Moreover N. 

 stelleri has the tarsus of the thoracic legs six-jointed. 



N. indica is the Indian Ocean representative of N. longicomis 

 and provides additional evidence of the close similarity of the 

 Mysidacean fauna of the Mediterranean and Indian Ocean, so clearly 

 exemplified by this collection. 



Neomysis hodgarti, sp. nov. 

 Text-figs. 2i«-/. 



Locality.— Mouth of the Rajang River, Sarawak, Borneo, 

 i-vii-io. Four males and fifteen females, up to 7 mm. in length, 

 collected by R. Hodgart. (Types.) 



Description. — Body smooth, without spinules on either thorax 

 or abdomen. Carapace produced into a short broadly triangular 

 rostral plate with bluntly pointed apex, anterolateral corners 

 rounded. Eyes reaching to the end of the second joiut of the 

 antennular peduncle, normal in shape, pigment black. Antennal 

 scale extending slightly beyond the distal end of the antennular 

 peduncle in the female and level with the male process of the 

 antennules in the male, narrowly oval in shape, setose all round, 

 about five times as long as broad, terminal joint distinct, a 

 strong spine on the outer distal corner of the joint from which 

 the scale springs. I,abrum with a very long sharp forwardly 

 directed spine. Tarsus of the thoracic legs composed of five to 

 six joints and terminated by a slender nail. Last segment of the 

 abdomen slightly longer than the fifth. Telson one and a quarter 

 times as long as the last abdominal somite, narrowly linguiform 

 in shape, not quite twice as long as broad at the base, apex en- 

 tire, without cleft, almost truncate, one-fifth of the width of the 

 telson at the base, bearing four equal strong spines in length 

 about one-eighth of the total length of the telson, distal two- 

 thirds of the lateral margins armed with about 26-28 short, 

 closely set and regularly arranged spines increasing in length 

 towards the apex. Inner uropod about one-sixth longer than the 

 telson plus the terminal spines, with a single spine on the lower 

 surface near the statocyst. Outer uropod one-sixth longer than 

 the inner. First, second, third and fifth pleopods of the male 

 simple uajointed plates as in the female. Fourth pleopod reach- 

 ing almost to the base of the telson, endopod with well developed 

 side lobe, exopod composed of three joints, first joint very long, 

 three and a half times as long as the second, latter bearing a 

 very long straight simple seta three times as long as the joint, 

 terminal joint very minute with a single short seta at the apex. 

 Length of the largest specimens of both sexes, 7 mm. 



Remarks. — This species belongs to the N. longicomis group 

 of the genus and is distinguished by the form of the telson with 

 its apical armature of four equal stout spines, the smooth dermis, 

 and the number of joints in the tarsus of the thoracic limbs. 



