156 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Distribution: East coast of America from Charleston, South Caro- 

 lina, to Rio de Janeiro, Brazil, including Georgia, British Honduras, 

 Cuba, Santo Domingo, Trinidad, and Limon Bay, Panama; west coast 

 from El Triunfo, El Salvador, to Rio Tumbes, Peru, including Punta 

 Arenas, Costa Rica, Guayaquil, Ecuador, from a salt lake back of town, 

 and a male specimen in the National Museum collections just determined 

 which was found on the mud at low tide at the Pacific entrance to the 

 Panama Canal by the Marsh-Darien Expedition, July, 1924. 



Remarks: The identity of Dana's Squilla rubrolineata with the 

 present species hitherto questioned, I believe, may be accepted. The few 

 discrepancies that are to be noted do not seem to be of sufficient moment 

 to warrant the continued doubt. The eyestalks, as drawn in Dana's 

 Atlas, perhaps are not what they should be. They are different from 

 the more usual "Squilla" type of eye and do more or less resemble the 

 eyes of S. dubia; also the transverse axis of their corneae is oblique to, 

 and not longer than, the longitudinal axis of the ocular peduncle. The 

 median keel of the telson in smaller specimens of dubia is always sharper 

 than in older and more developed specimens; the latter usually have the 

 margins of the telson very much thickened. 



Squilla bigelowl, new name 



Squilla panamensis variety A Bigelow, Johns Hopkins Univ. Circ, 1891 ; 

 Proc. U.S. Nat. Mus., Vol. 17, No. 1017, p. 529, 1894. 



? Squilla panamensis "Variety B" Boone, Bull. Vanderbilt Mar. Mus., 

 Vol. 2, p. 39, pi. 6, 1930. 



Chloridella panamensis "Variety A" Lunz, Bull. Bingham Oceanog. 

 Coll., Vol. 5, Art. 5, p. 11, fig. 4, 1937. 



Distribution: Of this species I have seen no material other than that 

 listed by Bigelow. This was taken by the Albatross in the Gulf of Cali- 

 fornia. Within the Gulf the species has been collected from Angeles Bay 

 (Lunz) and off Cape Lobos northward to Point San Fermin, Diggs 

 Point, and Consag Rock, 12-76 fathoms. The bottom where recorded, 

 with one exception, was mud of some description, brown, green, and 

 gray; the exceptional case was at one of two stations off Consag Rock 

 (12 fathoms) on gray (green?) sand; the other station off this rock 

 (33 fathoms) had the bottom given as brown mud. 



