A LUMINOUS SQUID. 



261 



surface of the mantle of the female, this being in the median line 

 just back of the nuchal cartilage. These clusters are very 

 conspicuous in both of the females before me, but there is present 

 in each of them in addition to the principal rosette, a much 

 smaller cluster of 4 to 8 spermatophores or remains of the same 

 adhering to the visceral mass at its mesial junction with the 

 collar, a position not quite opposite to that occupied by the main 

 rosette, but more anterior. Possibly therefore this smaller 

 cluster is to be regarded as a fragment of the larger one, adhering 

 here accidentally at the time of the emplacement of the latter. 

 In both of these specimens the ovaries are swollen and packed 

 with developing ova. Just how soon the ova would be ready for 

 extrusion is at present problematic. 



TABLE OF MEASUREMENTS. 



The male shows a large spermatophore bundle in process of 

 extrusion from Needham's sac and it may be added that the same 

 observation is true of the male from Messina. 



