Gnath ophausia — Pequ EGN AT 
403 
e'. Abdominal segments dorsally not keeled, without spines. Epimera of 
the five anterior abdominal segments rounded posteriorly. Branchi- 
ostegal lobe slightly angular. affinis 
d'. Upper lateral keel of carapace wanting. Branchiostegal lobe rounded or an- 
gular, but without spine. Abdominal segments dorsally without keel, but 
posteriorly with a small, depressed triangular projection. Epimera of five 
anterior abdominal segments ending in small points posteriorly. . elegans 
SIZE AND SEXUAL MATURITY 
Gnath ophausia in gens (Dohrn 1870) 
Figs. 3 and 4 
Gnath ophausia calcarata G. O. Sars, 1885 
bengalensis Wood-Mason, 
1891 
dory op h ora Illig, 1906 
A total of 204 specimens of Gnathophausia 
in gens were identified from the Scripps 1950— 
53 collections, consisting of 112 females, 23 
males, and 69 juveniles, ranging in size from 
25 mm to 139 mm body length (Table 1). The 
15 largest specimens (all greater than 110 mm 
as measured from the level of the eyes to the 
end of the telson) are listed in Table 2. The 
body length is normally measured from the 
base of the rostrum at the level of the eyes to 
the end of the telson. However, in many cases 
in past literature, measurements are given which 
include the rostrum. This latter measurement 
of total length is less reliable because of dam- 
Fig. 3. Gnathophausia ingens , young specimen of 98 mm total length. (From Sars, 1885.) 
