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PACIFIC SCIENCE, Vol. XIX, October 1965 
maturity in the case of the female G. ingens . 
Fage (1941) reports another female from the 
Dana Expedition, larger than his sexually ma- 
ture female of 140 mm, measuring 142 mm 
(168 mm with the rostrum), in which the 
oostegites were only 20 mm long and 5 mm 
wide, i.e., not yet fully formed. Thus there 
seems to be a range for the size at which sexual 
maturity occurs in G. ingens with some indi- 
viduals maturing at a smaller size than others. 
Gnathophausia gigas Willemoes-Suhm, 1875 
Fig- 5 
Gnathophausia drepanephora Holt and 
Tattersall, 1905 
A total of 66 specimens of Gnathophausia 
gigas were identified from the 1950-53 Scripps 
collections: 10 females, 9 males, and 47 juve- 
niles, ranging in size from 21 to 142 mm body 
length. Table 3 presents information about the 
5 specimens of G. gigas greater than 100 mm 
in body length. 
The male of 164 mm total length ( 142 mm 
body length) from Station H51-355 is slightly 
larger than the previously reported largest speci- 
men, a female of 160 mm total length (Tatters- 
all, 1914). The next largest previously reported 
specimens were 2 females of 135 mm and 133 
mm total length described by Nouvel (1943). 
A single female measuring 105 mm body 
length from Station H5 1-366 possessed brood 
lamellae which were well developed into a 
completely formed brood pouch. The marsu- 
pium was empty, however, the embryos evi- 
dently having been recently discharged. The 
brood lamellae measured 27 mm in length and 
8 mm at their greatest width. This mature fe- 
male specimen was captured at a depth of 2972 
m over a bottom depth of 3658 m. It has been 
Fig. 5. Gnathophausia gigas, adult male of 142 mm. (From Sars, 1885.) 
