20 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



S. rugosa is closely allied to S. hancocki Schmitt, 1940, from the 

 eastern Pacific ; the latter species has definite prelateral lobes on the tel- 

 son, lacks the accessory spinules on the last two abdominal somites, and 

 has a forwardly-curved spine on the lateral process of the fifth thoracic 

 somite. 



Remarks: The color pattern is quite distinctive. There is a black 

 line on the anterodistal fourth of the antennal scale. The merus of the 

 raptorial claw has a dark line across its distal end. There is a black line 

 posterolaterally on the eighth thoracic somite, and a black rectangular 

 patch on the dorsum of the second and fifth abdominal somite; the lat- 

 ter also has posterolateral spots. The median portion of each abdominal 

 somite is outlined in black. There is a broad, median patch of black 

 on the posterior half of the telson, and the distal portion of the inner 

 branch as well as the last segment of the outer branch of the uropods 

 are black. 



Squilla empusa Say, 1818 

 Plate 4, figs. 4-5. 



Restricted synonymy : 

 Squilla empusa Say, 1818, p. 250; Holthuis, 1941, p. 31 (part) ; Hol- 

 thuis, 1959, p. 177, text-fig. 76a, pi. VIII, figs. 3-4; Manning, 

 1959, p. 19. 

 Previous records: 

 Massachusetts to Campeche Bank, Trinidad, French Guiana (Manning, 

 1959) ; Margarita Island, Venezuela (Holthuis, 1959) ; Suriname 

 (Holthuis, 1959; Manning, 1959). to 84 fms. 

 Material examined: 

 OREGON Sta. 2208 ; 09°55'N, 60°53'W; southeast of Trinidad; Au- 



Plate 4. Squilla rugosa Bigelow 



Fig. 1. Male, OREGON Sta. 2267, north of Suriname, anterior portion 

 of carapace and rostral plate, x6. 



Fig. 2. Same, lateral processes of fifth, sixth, and seventh thoracic 

 somites, x6. 



Fig. 3. Male, Dry Tortugas, Florida, sixth abdominal somite, telson 

 and right uropod, xl.7. 



Squilla empusa Say 



Fig. 4. Female, OREGON Sta. 2279, north of Suriname, lateral processes 

 of fifth, sixth, and seventh thoracic somites, x5. 



F'ig. 5. Same, anterior portion of carapace and rostral plate, x5. 



