Boone, Crustacea, Cruises of "Eagle" and "Ara,'' 1921-28 35 



1849. — Bell, Brit. Crust., p. 351, 1851. — Johnson, Ann. and 

 Mag. Nat. Hist., vol. 3, p. 56, 1859. — Heller, Crust. Sudl. 

 Europa, p. 306, pi. X, figs. 15-19, 1863.— B. Capello, J. Acad. 

 Sci. Lisbon, p. 80, 1877. — Miers. Ann. and Mag. Nat. Hist. (5), 

 vol. 5, p. 21, 1880.— Bigelow, R. P., Proc. U. S. Nat. Mus., vol. 

 17, p. 526, 1894. 



Latreille states that this crustacean was used by the ancients as a 

 medicine. 



Squilla alba E. P. Bigelow. 



Plate 5. 



Type: Taken at Bimini Harbor, Bahamas, burrowing in calcerous 

 sand, and deposited in the United States National Museum. 



Distribution: Known only from the type-material and the "Ara" 

 specimens, which establishes the first Cuban and Panama record for 

 the species. 



Material examined: One specimen, dredged in Limon Bay, Pan- 

 ama, February 26, 1926, by the "Ara." One specimen from Nuevitas 

 Bay, Cuba, February 26, 1923. 



Color: Dr. Bigelow, who personally collected the type specimen, 

 reports that it is opaque white with a few symmetrically placed black 

 spots ; the eyes are yellowish. 



Technical description : Rostrum longer than wide, 4 mm. long, 2.8 

 mm. wide, basally with the lateral margin slightly convergent, the distal 

 margin rounded. The carapace is narrowed anteriorly, the frontal mar- 

 gin on either side of the rostrum slopes to the anterolateral angle, 

 which is armed with a small, acute, forward and slightly outward 

 pointing tooth; the lateral margins are carinate and diverge posteri- 

 orly, the posterolateral lobes being rounded, the posterior margin 

 slightly emarginate in the median region. There is a median longi- 

 tudinal carina which does not extend to the rostrum, on either side. 

 There is also an incomplete longitudinal carina on each side near the 

 lateral margin. The median lateral longitudinal grooves are sharply 

 defined. 



The exposed thoracic and abdominal segments are transversely con- 

 vex, the first and second short, with the lateral parts concealed; the 

 third segment has the lateral margins produced to an acute, outward, 



