22O CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



culum, and the several segments of the flagellum of the second 

 antennae. 



Idothea baltica (Pallas). 



FIG. 68. Idothea baltica. 



1841. Stencsoma irrorata, Gould, Invert. Mass., p. 338. 



1853. Idotea irrorata, Stimpson, Smithson. Contrib. Knowl., 

 vol. 6, p. 39. 



1874. Idotea irrorata, Harger, Rept. U. S. Com. Fish, for 

 1871-2, p. 569, pi. 5, fig. 23; also ibid., for 1878, p. 343, pi. 5, 

 figs. 24-26. 



1883. Idotea marina, Miers, Jour. Linn. Soc. London, Zool., 

 vol. 16, p. 25. 



1899. Idothea baltica, G. O. Sars, Crust. Norway, vol. 2, p. 

 80, pi. 32. 



1905. Idothea baltica, Richardson, Bull. U. S. Nat. Mus., 

 No. 54, p. 364. 



Body oblong-ovate, three times as long as wide ; abdomen 

 slightly more than one-third as long as whole body. Head wider 

 than long, slightly excavated in front and narrowing behind. 

 Eyes, large, round, conspicuous, compound, situated just anterior 

 to the median transverse line of the head and at the extreme 

 lateral margin. 



First pair of antennae with first joint equal in length to the 

 second and not expanded; third and fourth joints slightly longer 



