i \ I i i:\.\i Mil. LI.. I < 



il l-l\ ll!\ -elf I li:il I lie I Ilill shell of tin \ i "li.Hll 



ph>\ed by tin- female merely 888 i vccptacle in which todep 

 herei^, I directed a >) >cci men < !' .-1 . </,nll<i. \\ 'i t h :ili 



occupying tin' di-coidal part of the shell and tin- posterior por- 

 tion of tin-root'. Tin eery numerous, ovoid, pale yellow. 

 Mini semi-pellucid, are nil united ton-ether by a delicate, ^lutiir 



t raiisparent, lihiuu'iit oils web. which is attached to c;ich ovum by 

 :i slcn<liM- t.-ipei-in^ jK-iliincli 1 ;it, the :iiitei i ior rxtrnnitv. 'I'lir 



ciiihv egg-mass !s suspended to tin- I>oly-Nvh<rl <>r tin- spi 



its nntrrinr ]>:irt ly nic;iiis of a pencil of dcliciite irlulinoii- 

 thrcnds. which ivtriin it in ;i |>ro|n'i- position. 



The posterior Lilohul.-i v p:i rt of the Ixxly o(' tlir t'ein;ile is in 



' Mpposition to (In- IIIMSS of OVM. and thus, like :i stri 

 a|ii:itic- Myu'Mle. 01- ot her sj)ider, dot's this ivmarkaUr eeph;dopod 



\ :iliont her CLI-.U-S in :i li^lit. calcareous nest, which she tinnly 



i of ly means of the broad, expanded, del; 



niendtranes of t he posterior pair of tentacles. When disturbed 

 or captured, however, she loosens her hold, and, leaving her 

 cradle to it> fate, swims about, independent of her shell. There 

 U not. indeed, the slightest vestige of any muscular attachment. 

 In a specimen of A. <i<>n<l<>l<i . the ovary was distended with ova. 

 but in a much less advanced sla.uv of development than tho-e 

 deposited in the shelly nidus. Some of these latter were sutli- 

 ciently matured to enable me to trace, under the microscope, the 

 early indications !' the bein^ofthe A r^onaut ; and although t he 

 progress was not followed very far. it was stiilicient to ascertain 

 the similarity With the changes observed by I'oli in the same 



IS, with whose writings I afterwards compared my remarks; 

 the only dilfereiice of any importance appears to be that Poli 



trded as the Shell what I have- called the yolk-bau. At first, 

 the ova are semi-opaque, pale yellow, and apparent ly speckled 

 minutely, which is owin^ to the u'ranular yolk : afterwards they 

 beroine clouded with li^ht-bi'own blotches, and three dark - 

 make their appearance, one for cadi eye and one for l he vi>< 

 ilics,. xpoN. in the nc\l xt.-i^-e, approach each other, and a faint 

 outline of 'he future Argonaut is visible, a clnb-shaju'd einl 

 rounded in front and taperin- behind. The front part is then 

 lobed ; a black mark for the liornv mandibles is pm-civcd, and 



