NO. 3583 COPEPODS — GRICE AND HULSEMANN 29 



Genital segment short, in dorsal view sides parallel. Furca longer 

 than wide. First antenna reaches genital segment. Fu'st and 

 second segments with prominent teeth. Fifth feet 3-segmented, 

 with extremely small distal segment bearing a long seta. Penulti- 

 mate segment with small distolateral spine. Total length 1.58-1.79 

 mm. Holotype: USNM 113525. 



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

 and fifth thoracic segments fused. Anterior end of head with 

 rounded knob. Posterior lateral corner of fifth thoracic segment 

 rounded. Internal spine on second segment of right foot reaches 

 just beyond middle of distal segment. Third segment of left foot 

 with one seta and one spine on internal side. Total length 1.36- 

 1.44 mm. Allotype: USNM 113526. 



Remarks: The female of this species resembles M. venusta Gies- 

 brecht and M. brevicauda Giesbrecht. From the former it is dis- 

 tinguished by the 3-segmented fifth feet and presence of one terminal 

 seta on the distal segment. M. venusta has a 2-segmented fifth foot 

 and four setae on the distal segment. From M. brevicauda it is dis- 

 tinguished by the spines on the first and second segments of the 

 antenna; in addition, neither M. venusta nor Af. brevicauda have 

 pointed foreheads. The male is distinguished from these species 

 by the rounded knob on the anterior margin of the head and the 

 details of the fifth feet. 



Luctcutia major Wolfenden, 1911 



Figures 144-147 



Remarks: This species has not been reported since it was described 

 by Wolfenden in 1911. The one female found differs from the de- 

 scription in that the first antenna exceeds the end of the furca by about 

 the last four segments. Wolfenden stated that the antenna exceeds 

 the furcae by the last two segments. Also, the left furca is only 

 slightly longer than the right one instead of being considerably longer 

 as mentioned in the original description. In all other points our 

 specimen agrees with the description of Wolfenden. The present 

 specimen measures 8.16 mm; Wolfenden 's measured 8.0-8.2 mm. 

 Since no figures of Lucicutia major have been published, we are pre- 

 senting figures of this species here. This is the first record of L. 

 major from the Indian Ocean. 



Disco injlatus Grice and Hulsemann, 1965 



Figures 148-161 



Diagnosis (male) : Head and first thoracic segment separate, 

 fourth and fifth thoracic segments fused. Anal segment longer than 



