358 THE GENUS CALLINECTES—M. J. EATHBUX. vol.xviii. 



wide. The dimensions of Dana's type in the National Museum (No. 

 2371) are: Length to sinus, 55.5; greatest length, 57.5; width, 131.5 

 mm. Length of Cuban specimen, to sinus, 54.5; greatest length, 56.3; 

 width, 127 mm. 



The localities of specimens examined are as follows: 



Bahia Honda, Cuba, May 8, 1893; Bahama Expedition of the State University 



of Iowa. 

 .Tamaica: str. Jlhaiross (No. 18237, U. S. N. M.) ; Kingston Harbor, Dr. R. P. 



Bigelow (No. 17977, U. S. N. M.). 

 Old Providence; str. Albatross (No. 18238, U. S. N. M.). 

 Aspinwall; str. Albatross (18239, U. S. N. M.). Caught at night with a small 



hoop-net baited and set at a little distance from the steamer in four fathoms. 

 Sabauilla, United States of Colombia; str. Albatross (No. 7559, U. S. N. M.). 

 Brazil: Pernambuco, C. F. Hartt (Peabody Mus. Yale Univ.); Rio de Janeiro, 



U. S. Exploring Expedition, types of Dana's Lupa dicantha, 1 male (No. 2371, 



U. S. N. M.), 1 male (Mus. Comp. Zool.) ; Rio de .Janeiro, Thayer Expedition 



(Mus. Comp. Zool.), very abundant; Santos, Thayer Expedition (Mus. Comp. 



Zool.). 



Eecorded by Smith from Bahia. 



CALLINECTES LARVATUS, Ordway. 

 (Plates XVII; XXIV, tig. 5; XXV, fig. 4; XXVI. tig. 4; XXVII, fig. 4.) 



? Xeptunus marginatus, A. Milne-Edward.s, Arch. Mus. Hist. Nat. Paris, X, 318, 



pi. XXX, fig. 2, 1861. 

 CalHiiectes larvatits, Ordway, Boston .Tourn. Nat. Hist., VII, p. 573, 1863.— Smith, 



Trans. Conn. Acad. Sci., II, p. 9, 1869. 

 Callinectes larvains, A. Milne-Edwards, Crust. Reg. Mex., p. 225, 1879 (variety 



of Callinectes diacanthiis). 

 Callinectes larvatits, var. africatnis?, Benedict, Proc U. S. Nat. Mus., XVI, 1893, 



p. 537. 



Areolations well marked; granules coarse; length of intramedial 

 area a little less than one-half its anterior width. Front four-toothed 

 (Plate XXIV, fig. 5); median teeth small, more prominent than in 

 C. ornatiis; lateral teeth obtuse, broader and more arcuate than in C. 

 ornatns. Suborbital tooth prominent, arcuate, curved upward. Antero- 

 lateral margin little arched. The teeth are well separated by deep 

 rounded sinuses; the second to the fitth, inclusive, liave convex posterior 

 margins; the first three or four teeth are obtuse, the remainder sharp- 

 pointed. Lateral spine between two and two and a half times the length 

 of preceding tooth. Terminal portion of abdomen of male slender. 

 Penultimate segment (Plate XXV, fig. 4) wider at proximal than at dis- 

 tal end, margins slightly concave. Appendages very short, overreach- 

 ing the third segment but little or not at all (Plate XXVI, tig. 4). The 

 abdomen of the female (Plate XXVII, fig. 4) is much narrower than in 

 any other species; terminal segment much longer than wide. Costse of 

 manus prominent, with medium granules. 



Size. — The width of full-grown males varies from 4:^ to 4f inches. 

 The largest female is about 4 inches wide. 



