42 Addison E. Verrill, 



It is about one-third as long as the carapace. There is also a 

 well developed antennal groove and spine, and a hepatic spine. 

 The fourth, fifth, and sixth abdominal segments are sharply cari- 

 nated with a groove each side of the carina on the sixth. The 

 telson tapers to a sharp, acuminate point, without lateral spines ; 

 it has a deep dorsal sulcus. 



The color of a young specimen in life was translucent whitish, 

 with faint irregular brown markings on the abdomen. 



Length of body of large females may be 160 to 170 mm. (or 

 about 7 inches), including the rostrum ; carapace about 60-64 mm ; 

 rostrum 22-24 mm - Most specimens do not exceed 100-125 mm. 

 Those occasionally found in our northern waters are generally 

 small and immature. 



This large species is undoubtedly the one recorded as "The 

 common prawn" of Bermuda, by Hurdis. He mentioned having 

 specimens 5.3 inches long and that they had six chelate legs, 

 characters that could apply to this species alone, of those now 

 known at Bermuda. It was taken later by Mr. G. B. Goode, 

 .C. M. Allen, and by others. More recently it has been taken by 

 the Yale parties in 1898 and 1901. Young were dredged by me 

 in Great Sound, in 3 to 5 fathoms, May, 1901. Larger specimens 

 were taken in a fish-seine, in 1905, at David's Island, by The Field 

 Museum Expedition. 



Penceus braziliensis: Dental formula of rostrum and measurements in 



millimeters. 



Teeth above Specimens examined 



No. and below c? Length. 9 Length. 



7570fl 16 (45-75) 20 (40-75) 



2 



7570& 4 4 3 (50-6o) 4 (45-67) 



2 



757oc 4 6 2 (50-53) 5 (50-80) 



2 



-4- 7 - i (65) 



7570*? i (40) 



3 5 2 (67-85) 



2 



4 6 i (68) 



