244 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



on all the segments of the thorax with the exception of the first and 

 the seventh. There are two pairs of epimera on the fourth thoracic 

 segment and two pairs of legs are attached to this segment. The 

 seventh segment has no appendages. 



Abdomen continuous with thorax, not narrower than thorax; deeply 

 inmiersed. Carina on the four posterior pairs of legs moderately 

 high. 



AGARNA CARINATA Schioedte and Meinert. 



Agarna carmata Schicedte and Meinert, Naturhistorisk Tidsskrift (3), XIV, 

 1883-84, pp. 329-334, pi. xiii, figs. 1-3.— Richardson, Proc. U. S. Nat. 

 Mus., XXIII, 1901, p. 531. 



Localities. — St. Croix Island, West Indies; Key West, Florida. 

 Found on Teuthis chirurgus. 



Body ver}^ asymmetrical, with the last four thoracic segments on 



one side abruptly very 

 much wider than the first 

 three. Body twisted to 

 one side, which is shorter 

 than the other side, twice 

 as long as its width above 

 the fourth thoracic seg- 

 ment, nmi. : 18 mm. 

 At the fourth and fifth 

 thoracic segments it is 11 

 mm. wide. The body is 

 also very much hunched, 

 rising very high, until 

 at the third and fourth 

 segment it is 7 mm. high. 

 The head is wider than 

 long, 2 mm.: 8 mm., 

 somewhat rectangular, 

 with the anterior margin 

 widely rounded. The 

 ej'^es are small, round, 

 composite and situated 

 in the post-lateral angles 

 of the head. The first 

 pair of antenna^ are composed of seven articles. The basal articles are 

 almost contiguous. The second pair of antenna^ are composed of ' ' ten " 

 articles. The head is deej^ly set in the first thoracic segment, the 

 antero-lateral angles of which extend to the anterior margin of the 

 head. The maxilliped has a palp of two articles. The palp of the 

 mandibles is composed of three articles. 

 The first, second, and third thoracic segments are equal in length, 



/ 



Fig. '253.— Agarna carinata (After Schicedte and Mein- 

 ert). «, Lateral view of adult female (left side), h, 

 Young of the first stage, c, Lateral view of adult 

 female (right side), d, adult male. e.adult female. /, 

 Lateral view of thorax of adult male. (All enlarged.) 



