290 A. S. PACKARD, J R , ON THE RECENT 



T , Be , side * theSe Shel 7 ls ' the c Anticosti Expedition from Cambridge collected at the Minean 

 Islands Wnna angel**, Succinea oMi qua Say, Succinea avara Say, Succinea VertM bZI 



s&e^t stimps " HeUx chersim sa * Heiix arb ™ ■* «* » 



The only Cephalopod known is the common Squid, Ommastrephes todarus ? 



Vermes. 



Syrinx ? n. sp. [Plate Vlir., fig 10.] 



A small slender species occurred in eight fathoms, sandy bottom, at Caribou Island which 

 s provisional^ described here, as no specimens were observed in a living state and even 

 the genus is doubtful. It is slender, cylindrical, the anterior half of the body g aduailv in 

 creasing m size towards the mouth, where in our alcoholic specimens it is Lfdenly trun- 

 cated or as m another specimen, this part of the body is swollen into an ovate enlargement 

 and slightly constricted just before the mouth. The surface is very minutely ff ranuhted 



, Wha dd H ? eaCh - like PUbeSC6nCe ' and is dul1 ^ in spiritsfpost orhTo he 

 body smooth, being scarcely granulated or striated. Posteriorly the bidy is sudd uly trun 

 ca ted with a large anal opening. At the mouth are five indistinct lobes, whTchTre prot 

 ably the retracted tentacles but there are no traces of any bristle, Leng th7 5- 40 inch 

 breadth, .04 inch. Found free in the sand, not inhabiting shells. ' 



Phascolosoma hamulatnm n. sp. [Plate VIII., fig. 8.] 



smoother than the adjacent part. Mouth surged ^£^^£5 £££ 



rted sheU iTntch 1 7*t °\ ^ ***** ^ ° f the bod * ™^ ^ »** 

 till rt , mUC V° nger than the antenor ' sac " Iike > l0 ^e, and soft, increasing in width 



toward the end surface not wrinkled except at the end, which is suddenly rounld bu 

 covered with fla granular scales; posteriorly the flattened granulations terminTe tw 

 corneous curved points bent toward the head, which probably act as hookT to eta n the 

 animal within its domicile. The mouth of the shell is prolonged bv at. Tnf fil i 



of sand, like those of Sabella prolonged by a tube of fine granules 



hirsts z^::^™' Caribou ■*■* straits «™° <*• - 



This interesting form differs from P/mmhsom, ammihtum F S r.,,,1-.,, ,n ■ • 

 linm quorandam descriptions, p. 22, fig 5 1828 \ in , Z 1\ , ' ( , B , rev,s -""™- 



po.sses.sing tentacles of 'which iLkart? tJ^ V1Zm v 7!a ^T* T£ °' Kl » 

 have heen withdrawn within the h„d y in L ^TheS 1 "° Th Si IfarT Y f 

 the body of Leuckart's species does not merge so eraduallv into th* , J f . nte1101 Pf? of 

 thicker at the middle of the body, where in our specie t^hT P ^ ^ * 1§ 



toward the end. 2 ° ie " the bod ^ increas es m thickness 



