560 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



The incul)atory lamellae are very wide apart, surrounding a broad 

 open space, the marsupium. on the ventral side of the bod}. 



There are five pairs of 

 double-branched pleopoda, 

 lamellar in shape and placed 

 on either side of the median 

 line. Uropoda absent. 

 Color, white. 

 Male, oblong oval. Ej^es 

 wanting. Thoracic . seg- 

 ments well defined. Ab- 

 dominal segments imper- 

 f ectl}^ defined, except along 

 the lateral margins. Color 

 white. 



Type locality. — Mangroves, Rio Parahyba do 

 Norte, Brazil, in the branchial cavity of Crangon heterochsdis Say. 

 Cat. No. 23759, U.S.N.M. 



Fig. 612.— Probopyrus alphei 

 Dorsal view of female. 



Fig. 613.— Probopyrus 

 ALPHEI. Male. 



PROBOPYRUS LATREUTICOLA (Gissler). 



Bopyroides latreuiicola Gissler, American Naturalist, XVI, 1882, pp. 591-594. 

 Bopyriis latreules Spence Bate, Challenger Report, XXIV, 1888, p. 584. 

 Bopyrina latreuticola Bonxier, Travanx de la Station Zool. de Wimereiix, VIII, 



1900, pp. 370-373. 

 Bopyroides latreniicola Kichardson, Trans. Conn. Acad. Sciences, XI, 1902, 



p. 299; Proc. U. S. Nat. Mus., XXVII, 1904, pp. 65-66. 



Localities. — Beaufort, North Carolina, on Latreutes eiisiferus Qs/iWwQ 

 Edwards); latitude 28^ 17' 7" north, longitude m"^ 17' 37" west; lati- 

 tude 31- 15' 42" north, longitude 67^^ 39' 

 10" west on L. enslferm; latitude 31° 16' 

 north, longitude 71° 50' west on L. ensi- 

 ferus; latitude 27° 38' north, longitude 

 76° 23' 24" west on L. eiulferm; Baha- 

 mas, between Nas.sau and Andros on L. 

 enslferus; off South Carolina, on L. ensl- 

 fei'Kx; Bermudas, on L. eJislferus. 



Body of female ovate, asymmetrical, 

 one and a half times longer than broad, 

 2 mm. : 3 mm. 



Head deeply set in first thoracic segment; 



with a frontal border, the anterior margin 



and the lateral angles of which project as 



Eyes distinct and situated 



Fig. 614.— Probopyrus latreuticola 

 a, Male, x^lh /;, Female, x LSg. 



of which is widely rounded, 



triangular lobes at the sides of the head. 



just below the frontal bordoi-. 



On one side of the body the segments of the thorax have the lateral 



