ART. 8. 



ON BOECKELLA AND PSEUDOBOECKELLA MARSH. 



11 



BOECKELLA OBLONGA Sars. 



1908. Boeckella oblonga Sars, pp. 6 and 7, pi. 1, figs. 5-8. 

 1922. Boeckella oblonga Henry, pp. 556-557. 



Female. — The first antennae extend to the furca. The sides of the 

 last cephalo thoracic segment have prominent and acute inner lobes 

 and project back about two- thirds the length of the first abdominal 

 segment. The abdomen is asymmetrical, the right side being the 

 more prominent. The terminal segments of the exopodites of the fifth 

 feet are armed with 7 spines. 



Male. — Both endopodites of the fifth feet are 1 segmented. The 

 right endopodite extends to the end of the second segment of the 

 exopodite and bears on the inner margin near the base a prominent 

 tubercle. The second basal segment of the left foot has on the inner 



Figs. 14-16.— 14, Boeckella oblonga Sars, fifth feet of male, x 114, after Sars. 15, B. occiden- 

 TALis Marsh, fifth feet of male, x 110. 16, B. orientalis Sars, fifth feet of male, after Sars. 



surface a serrate lamella. The left endopodite is one-half the length 

 of the first segment of the exopodite. Figure 14 shows the fifth feet 

 of the male. 



Length. — Female, 2 mm. 



Southern Australia. 



BOECKELLA OCCmENTALIS Marsh. 



1906. Boeckella occidentalis Marsh, pp. 179-183, pi. 18, figs. 1, 3-6. 



Female. — The first antennae extend to the end of the furca. The 

 last segment of the cephalothorax projects backward and has inner 

 lobes. The abdomen is symmetrical. The terminal segments of the 

 exopodites of the fifth feet bear 3 spines. The exopodites of the 

 second antennae consist of 7 segments, 1, 3, 4, 5, and 6 being short. 



Male. — In the fifth feet the right endopodite is 1 segmented, 

 pointed, and curved inward, and reaches the end of the second seg- 



