CEPHALOPODA. 473 
Ocropus mimus (Gould). 
Corpus parvum, ovato-globosum: caput angustum: oculi parvi, exstanti- 
bus; pupillo nigro; iride aurato et miniato: apertura ad angulos 
maculis rufis flavo-cinctis oculos simulantibus signata: brachii robuste, 
corpore quater excedentes, pro longitudine 3, 2, 4, 1; acetabults remotis, 
purpureo cinctis: umbella amplissima: os eccentros ; rostris nigris : 
sipho parvus, tenuis: tunica reticulata, musiva, coloribus ochracets, 
maculis lunatis transversis fuscis ordinatim picta. 
Body small, short, ovate-globose, rounded at extremity. Head less 
than one-half the width of the body, having a well-marked neck be- 
tween the body and the eyes. Eyes small and moderately promi- 
nent; pupil narrow and black; iris golden, encircled with vermilion. 
Aperture extending above the eyes, and coloured at its upper commis- 
sures with brown, encircled with yellow, so as to resemble another 
pair of eyes. Arms large at their origin, about four times the length 
of the body ; comparative length 3, 2, 4, 1. Umbrella very large, its 
lateral diameter being about six inches, and its vertical diameter about 
four inches, of which about three inches are above the mouth. The 
membrane extends along the arms two-thirds of their length; its 
spread between the upper arms is three and a half inches, between 
the lateral arms about two inches. Mouth near the ventral margin 
of the umbrella, surrounded by elevated lips; jaws black. Cupules 
distant from each other, and of medium size; there are about forty 
distinct pairs on the two lower thirds of the lower pair of arms, when 
they become enveloped in a membrane for the rest of the length; 
they are moderately elevated, the lip white, with a purple stripe 
around the summit; interior radiately furrowed, and with a small 
central opening. Locomotive tube small, slender, tapering, with a 
very small opening. Surface covered with a mosaic or rubble-work, 
of irregular, rather coarse reticulations, so that it is quite harsh. This 
roughness or reticulation extends to every portion of the exterior. It 
is also found, less conspicuous, on the interior, even on the surface of 
the cupules. The ground colour is ochreous-orange, with blue reflec- 
tions, and with transverse, crescentic cloudings, produced by innu- 
merable fine dots of dark chocolate, which extend over every part of 
the arms and umbrella; the coloration of the interior is paler and less 
distinetly clouded. 
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