^'°- ^^^^ COPEPODS — GRICE AND HULSEMANN 27 



ScolecithriccUa grata, new species 



Figures 100-103 



Occurrence: Station 131 Be, 2000 to 1000 m, 1 9. 



Diagnosis (female) : Head and first thoracic segment fused, fourth 

 and fifth thoracic segments fused. Rostral filaments present. Fu'st 

 maxilla of usual scolecithricid structure. Second maxilla with four 

 lobes each bearing setae and without terminal sensory appendages. 

 Fifth feet consisting of one segment ending in a long spine. Total 

 length 1.31 mm. Holotype: USNM 113521. 



Remarks: This species differs from others m the genus by the 

 structure of the fifth feet and the absence of sensory appendages on 

 the second maxilla. In the latter respect it is similar to Scolecithrix 

 iowleri Farran. 



Scolecithricella maritima, new species 



Figures 104-114 



Occm-rence: Station 332 NV, 2000 to 1002 m, 2 99; 340 NV, 1950 

 to 1015 m, 1 9. 



Diagnosis (female) : Head and first thoracic segment fused, fourth 

 and fifth thoracic segments incompletely separate. Anterior margin 

 of head broadly rounded. Rostral filaments absent. First antenna 

 with 23 free segments (segments 8 and 9 fused) , reaching to fifth tho- 

 racic segment. Mouth appendages of Scolecithricella type. Expods of 

 first through fourth swimming feet 3-segmented, endopod of first foot 

 1-segmented, of second foot 2-segmented, of thuxl and fom-th feet 3- 

 segmented. Scattered spines on terminal endopodal segments of 

 second through fourth feet. Fifth feet 3-segmented with one terminal 

 and one internal spine on distal segment. Total length .76-.77 mm. 

 One female from station 332 is the holotype. Holotype USNM 

 113522. 



Remai'ks: This species is similar to S. ctenopus (Giesbrecht) , but 

 the two may be distinguished by the structm-e of the fifth feet and by 

 their size. S. maritima has no sm"face spines on the second and third 

 segments of the fifth feet and the total length is less than 1 mm. S. 

 ctenopus has numerous small spines in the second and thh'd segments 

 of the fifth feet and the total length is about 1.50 mm. 



Scolecithricella timida Tanaka, 1962 



Figures 115-123 



Remarks: This species was originally described from Sagami Bay, 

 Japan (Tanaka, 1962). Some additional figures are given here. The 

 total length of the specunens varies from 1.50 to 1.7G mm. This 

 species has not been reported from the Indian Ocean. 



