NO. 1222. ISOPODS OF THE ATLANTIC COAST— RICHARDSON. 503 



B. HETEROTANAIS G. O. Sars. 



7. HETEROTANAIS LIMICOLA (Harger). 



Paratanais Umicola Harger, Am. Jour. Sci., XV, 1878, p. 378. 



Leptochelia Umicola Harger, Proc. U. S. Nat. Mus., II, 1879, p. 163; Report U. S. 



Commissioner of Fish and Fisheries, 1880, Pt. 6, p. 424, pi. xiii, figs. 87, 88. 

 Heterotaiiais Umicola Norman and Steering, Trans. Linn. Soc. Lond., XII, 1886. 



Pt. 4, p. 109. 



Habitat. — Massachusetts Bay, off Salem. 

 Depth. — i8 fathoms. 



6. LEPTOCHELIA Dana. 



ANALYTICAL KEY TO THE SPECIES OF LEPTOCHELIA. 



a. Gnathopods in male greatly elongated, with tuberculate immobile finger. Upper 



antennae three-jointed, and with rudimentary flagellum in female, much 



more elongated, and with a multi-articulate flagellum in male. 



h. Outer branch of uropoda one-jointed. 



c. Inner branch of uropoda five-jointed. Antennulae, with basal segment nearly 



one-half the length of the whole organ, are more than one-third as long as 



the body 8. Leptochelia rapax Harger. 



&. Inner branch of the uropoda six-jointed. Antennulae, with basal segment 

 about one-third the length of the whole organ, are about two-thirds as long 



as body 9. Leptochelia savigmji ( Kr0y er ) . 



h'. Ou+er branch of uropoda two-jointed 10. Leptochelia minuta Dana. 



(/. Gnathopods in male not greatly elongated. Upper antennae three-jointed, not 

 elongated in male. 

 b. Inner branch of uropoda six-jointed. Terminal abdominal segment pointed 



posteriorly 11. Leptochelia lubia (Kr0yer) . 



b^. Inner branch of the uropoda five-jointed. Terminal abdominal segment 

 rounded behind 12. Leptochelia (?) filum (Stimpson) . 



8. LEPTOCHELIA RAPAX Harger. 



Leptochelia rapax Harger, Proc. U. S. Nat. Mus., II, 1879, p. 163; Report U. S. 

 Commissioner of Fish and Fisheries, 1880, Pt. 6, p. 424-426, pi. xiii, figs. 89, 90. 



Habitat. — Annisquam, Massachusetts. 

 Depth. — One-half fathom. 



9. LEPTOCHELIA SAVIGNYI (Krr;<yer). 



Tanais savignyi Kr0Yer, Nat. Tidsskr., IV, p. 168, pi. 11, figs. 1-12. 

 Tanais edwardsii Kr0yer (female), Nat. Tidsskr., IV, p. 181, pi. 11, figs. 13-19. 

 Leptochelia algicola Harger (female). Report U. S. Fish Com., 1880, Pt. 6, pp. 

 421^23, pi. XIII, figs. 83, 84a-b, 85. 



Ilahltat. — Great Egg Harbor, New Jersey; also England; France; 

 Azores; Mediterranean; Madeira. 

 Depth. — Found on surface. 



10. LEPTOCHELIA MINUTA Dana. 



Leptochelia minuta Dana, Am. Jour. Sci., VIII, 1849, p. 425; U. S. Exp. Exped., 



1852, XIV, p. 800, pi. Liii, figs. 5a-d. 

 Delocliochelia forresti Stebbing, Ami. and Mag. Nat. Hist., (6) XVII, 1896, 



pp. 49-56. 

 Leptochelia minuta Stebbing, Ann. ]\Iag. Nat. Hist. (6), XVII, 1896, pp. 156-160. 



