2 W. E. HOYLE. 
“The young Cephalopod submitted to me is a larval Calliteuthis. That it belongs 
to the Histioteuthide is probable at the first glance, from its general appearance, and 
examination with a lens converted the suspicion into certainty. The peculiar form of 
the body and fins, as well as the lack of a sinus in the ocular opening, and the strong 
pigmentation occur only in this manner in the young of Enoploteuthide and Histioteu- 
thide. The numerous rows of suckers on the tentacular club and their prolongation 
down the stem of the tentacle show that it cannot be an Enoploteuthid. 
“Tt must be admitted that the characteristic develop- 
ment of luminous organs is not yet shown, but closer 
investigation would probably show the rudiments of them. 
The smallest specimen (with a mantle-length of 6 mm.) 
in my possession already possesses them; but I believe 
Professor Chun has a still smaller one in which they are 
not yet visible. 
“Other characters which show the specimen to be a 
Histioteuthid are the relatively broad funnel cartilages, the 
form and comparative size of the suckers, especially their 
relatively small size on the ventral arms. 
“Finally it may be shown by a process of exclusion 
that it cannot belong to any other family. The Bathyteu- 
thide have fins of quite different shape, no suckers on the 
tentacular stem, and much smaller ones on the club ; young 
specimens have quite a different appearance. 
“The Gonatidee have more than two rows of suckers on 
the arms. 
“The Tracheloteuthidee are essentially different in form 
and have much smaller suckers on the tentacles; in addition 
to which, the terminal cone of the pen is clearly visible through the integument, and 
finally the young of this family are slender, colourless and ghost-like. 
“Young Architeuthide have not yet been seen by me, nor, so far as I am aware, 
by anyone else; they must, however, be quite different from the specimen now under 
consideration.” 
I removed a portion of the mantle and had a series of sections prepared, hoping to 
find traces of the luminous organs in an early stage of development. I was, however, 
unable to find any structures which could be so interpreted. . 
