NO. 3583 COPEPODS — GRICE AND HULSEMANN 31 



second maxilla are figured here since Brodsky (1950) did not figure all 

 of the appendages. In om* specimen the exopod of the mandible 

 palpus is reduced and bears four setae. The endopod is represented 

 by one seta. Brodsky described this species as E. mixtus. The 

 name was subsequently changed (Hulsemann, 1967) to E. brodskyi 

 because it was preoccupied by a species described by Sars in 1905. 

 There was one male in the collection which measured 3.33 mm. In 

 the structure of the mandible blade and the first maxilla it is closer to 

 the female of Euaugaptilus mixtus Brodsky as described and figured by 

 Tanaka (1964) than to the specimens originally described by Brodsky. 

 In our specimen the mandible palpus is bu-araous. The number of 

 setae on lobes 1-6 of the second maxilla is 1, 1, 2, 3, 2, 3, respectively, 

 and that on lobes 1-5 of the maxilhped is 1, 3, 3, 2, 2, respectively. 

 This male is identical to the one reported as EuaugajMlus species by 

 Grice and Hulsemann (1965) from the northeastern Atlantic Ocean. 

 Euaugaptilus brodskyi has not previously been reported from the 

 Indian Ocean. 



Euaugaptilus curtus, new species 



Figures 180-186 



Occiu-rence: Station 108 Be, 2000 to 1000 m, 1 9, 1 cf . 



Diagnosis (female): Body slender, head and first thoracic segment 

 incompletely separate. Fourth and fifth thoracic segments fused, 

 posterior lateral corners rounded. Abdomen 3-segmented, genital seg- 

 ment longer than the two following combined. Rostrum with two 

 slender filaments. Fh'st antenna exceeds end of fm-ca by about five 

 segments. Exopod of second antenna consisting of eight segments, 

 reaching to end of finest endopodal segment. Mandible palpus unka- 

 mous composed of five segments, the last three each bearing one seta. 

 Mandible blade with two strong double teeth and one smaller tooth 

 adjacent to the seta. First inner lobe of fu'st maxilla with six spines, 

 second and thu'd inner lobes rudimentary. Fused second basal seg- 

 ment and endopod with one seta. Exopod can-ying one very long 

 and one small terminal seta and one slender subterminal seta. Ex- 

 ternal lobe with two setae. Number of setae on lobes 1-6 of second 

 maxilla: 3, 2, 2, 3, 2, 3, respectively; 7 setae on the endopod. Maxilh- 

 ped bearing 1, 3, 3, 2, 2 setae on the lobes of the basipod. Exopods 

 and endopods of first to fifth pair of swimming feet 3-segmented. 

 Total length 2.81 mm. Holotype: USNM 113528. 



Diagnosis (male) : Differs from female in the following : Abdomen 

 consisting of five segments. Left fii'st antenna geniculate. Segmen- 

 tation of mandible palpus incomplete. First inner lobe of first 

 maxilla with five spines. Fifth feet as in figure 186. Total length 

 2.49 mm. Allotype: USNM 113529. 



