14 ALLAN HANCOCK ATLANTIC EXPEDITION 



REPORT 



Outer margin of dactylus a simple curve ; lateral process of fifth 

 thoracic acute, sickle-shaped; denticles 3-10, 12-16, 1 

 S. edentata 



11. Rostral plate with short carina on anterior third; cornea of eye 



only slightly broader than stalk 



[5. surinamica Holthuis, 1959; Suriname] 



Rostal plate smooth, without median carina; eye T-shaped, cor- 

 nea much broader than stalk 12 



12. Lateral processes of fifth and sixth thoracic somites acute pos- 

 teriorly; rostral plate subquadrate .... 5. lijdingi 

 Lateral processes of fifth and sixth thoracic somites rounded 

 posteriorly; rostral plate elongate-triangular . . S. obtusa 



Squilla quadridens Bigelow, 1893 

 Plate 3, figs. 1, 2. 



Squilla quadridens Bigelow, 1893, p. 101; Bigelow, 1894, p. 511; 

 Holthuis, 1941, p. 32; Holthuis, 1959, p. 189, pi. IX, fig. 6; Man- 

 ning, 1959, p. 20 (part). 

 Previous records: 

 Biscayne Bay, Florida, (Manning, 1959) ; off Key Largo, Florida, 

 (Bigelow, 1893); northeast Gulf of Mexico, (Manning, 1959); 

 Gairaca, Santa Marta, Colombia (Holthuis, 1941); ofif Suriname 

 (Holthuis, 1959). Sublittoral to 56 fms. The specimen reported 

 by Manning (1959) from Englewood Beach, Florida, is S. 

 schmitti Lemos de Castro. 

 Material examined: 

 A14-39; 2 mi. S.W. of Cape la Vela, Colombia; April 8, 1939; 22 fms; 



2 5S,1? (one damaged) (AHF; USNM). 

 OREGON Sta. 2249; 07°40'N, 57°34'W; north of British Guiana; 

 August 31, 1958; 30/27 fms; 13 (USNM). 

 Measurements: Males, 29.8 to 33.4 mm, total length; female, 24.5 

 mm, total length. 



Description: Eyes large, triangular, corneal and peduncular axes 

 subequal; cornea placed obliquely on stalk; lateral margins of rostral 

 plate tapering anteriorly to rounded apex; carapace without carinae 

 except for posterior fourth of laterals and reflected portions of 

 marginals; raptorial dactylus armed with four teeth; four epipods 



i 



