Bae GILMAN A. DREW 
and left the bottom only as she was lifted or turned by the male. 
In every case the male attached from the left side of the female. 
He frequently swims close to her and brushes the tips of his 
arms along her head and mantle. Just before attaching, if both 
are swimming, he sinks slightly beneath her and grasps her 
body with his arms so that his right arms are all on the right 
side of her body and his left arms are all on her left side. The 
body of the male is seldom exactly ventral to the female but usu- 
ally slightly toward the left side. Attachment is evidently made 
as nearly as possible in the required position but when the female 
darts ahead, as she frequently does, the male is likely to attach too 
far posteriorly. In such caseshe does not let go his hold but crawls 
rapidly forward, arm over arm, until the right position is attained. 
Naturally the positions of the individual arms differ somewhat 
but in general the arrangement is reasonably well shown in fig. 1. 
For about a second after his position is attained the arms seem 
busy in making firm attachments, then with a rapid sweep his 
left ventral arm is passed by the end of his funnel and is im- 
mediately inserted into the mantle chamber along the left side 
of her neck, near the funnel. During the act both animals are 
usually quite without color and the inserted arm of the male 
may be seen fairly distinctly inside the mantle chamber. 
The movement of the arm past the funnel is rapid and only once 
have I actually seen the grasping of the spermatophores and their 
transference to the mantle chamber. In this case while watch- 
ing squid in an aquarium that was placed so the squid were between 
me and a window, a male grasped a female that was resting on the 
bottom. The female, contrary to the usual custom, did not move. 
As the male had attached far back on the body, opportunity was 
given me to get into position for observation before the male 
could crawl forward. As the female made no attempt to get free, 
the male seemed far more deliberate than usual. Just before the 
arm was passed by the end of the funnel, the penis could be seen 
protruding into it. A number of spermatophores appeared in the 
opening of the funne) and were grasped by bending the tip of the 
arm around them. With a rapid sweep of the arm they were 
immediately inserted into the mantle chamber of the female 
