no. 3613 TWO NEW CRUSTACEANS — BOWMAN AND KORNICKER 17 



Measurements of shells of some of the smaller juveniles in the 

 collection are as follows: 



height as % 

 USNM station length mm height mm of length sex 



114060 260 1.02 0.57 56 not determined 



114053 276 0.98 0.53 54 



" 276 0.99 0.50 51 



0.84 0.46 55 



0.86 0.48 56 



1.01 0.57 56 



0.83 0.44 53 



114050 2906 1.15 0.67 58 9 



" '* 1.08 0.61 56 ? 



1.14 0.61 54 9 



" " 1.17 0.64 55 9? 



1.27 0.74 58 tf a 



»Seven filaments on sensory bristle of 1st antenna. 



Comparisons. — With the exception of Parasterope corrugata 

 Poulsen, 1965, the 8 species of Parasterope listed by Poulsen (1965, 

 table 17, pp. 310-311) do not have the thumblike dorsal process that 

 is present on the dorsum of P. pollex. Parasterope pollex differs from 

 P. corrugata in having 12 to 17 bristles along the postero ventral 

 margin of the 6th limb compared to about 3 on P. corrugata, and in 

 having 2 ventrodistal bristles on the 4th joint of the 1st antenna 

 compared to no bristles on P. corrugata. Parasterope pollex differs 

 from Cylindroleberis psitticina Darby, 1965, in having only 2 bristles 

 on the anterior corner of the 6th appendage compared to 6 on G. 

 psitticina, and in having no laterodistal bristle on the 1st joint of the 

 1st antenna. The adult female of G psitticina has 6 dorsal bristles on 

 the 3rd joint of the 1st antenna compared to only 5 on P. pollex. 



The appendages of Gypridina mariae Baird, 1850, are unknown. 

 The unique dried holotype (no. 1945, 9.26, 96-100) is in the Baird 

 Collection at the British Museum (Natural History). Miss Patricia 

 D. Lofthouse of the Entomostraca Section of the British Museum on 

 request kindly measured the length of the specimen and found it 

 to be 2.33 mm, considerably longer than adults of P. pollex. The 

 length of the adult female identified as Asterope mariae (Baird) by 

 Brady and Norman (1896, p. 630) is 2.4 mm. Brady and Norman 

 (1896, pi. li: fig. 7) illustrate the 6th limb as having 4 an tero ventral 

 and 25 posteroventral bristles, many more than are present on P. 

 pollex. 



Appendages of specimens from San Diego Bay, Calif., identified as 

 Cylindroleberis oblonga (Grube, 1859) by Sharpe (1908, p. 423, pi. 



