4 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



Remarks. — The known bathymetric range of this species is 30-260 

 fathoms, according to Chace (1942). A number of Velero III specimens 

 were taken from water as shallow as 21 fathoms. A few of the indi- 

 viduals had a carapace length somewhat greater than the maximum 

 given by Chace. 



Munida angulata Benedict 



Munida angulata Benedict, 1902, p. 252, text-fig. 4 (type locality. 

 Albatross Sta. 2406, Gulf of Mexico off Florida). Chace, 1942, 

 p. 33. 

 Previous records. — 

 Gulf of Mexico off Florida, 24-27 fms: Albatross (Benedict). 



Material examined. — 

 A14-39. 2 mi SW of Cabo de la Vela, Colombia; Apr 8, 1939; 21-22 



fms. 2(5*, 7$ov. 

 A18-39. 8 mi SW of Sint Nicolaas Baai, Aruba; Apr 10, 1939; 23-24 



fms. 23 cf, 24? (13 ov). 

 A44-39. 4 mi N of Isla La Tortuga, Venezuela; Apr 21, 1939; 21-22 

 fms. 12cr,8? (6ov). 

 Measurements. — Males, 3.2 to 7.3 mm; non-ovigerous females, 2.9 

 to 7.4 mm ; ovigerous females, 4.7 to 7.5 mm. 



Porcellanidae 



Distribution 



From preliminary identifications of the Porcellanidae collected 

 during the Allan Hancock Atlantic Expedition, it soon became apparent 

 that nearly every species known from the Caribbean region was repre- 

 sented. Therefore it was decided to include all the Caribbean species in 

 this report. Actually, every porcellanid known from the western North 

 Atlantic is to be found in the area of the Caribbean or eastern Gulf of 

 Mexico, and most of them seem to have their center of distribution in 

 this region. Several are common as far north as Beaufort, North 

 Carolina. 



Only three species have ranges extending northward into cold water. 

 Petrolisthes armatus was taken once in Long Island Sound, and Poly- 

 onyx gibbesi (new name for Polyonyx ?nacrocheles (Gibbes) ; see p. 

 29) is known as far north as Woods Hole, Massachusetts. Crab lai-vae 

 are carried by the Gulf Stream to the shores of New England, where 

 most do not survive the cold winters (Faxon, 1897); the occurrence 



