﻿T E K E I) 0. 



Plate II. 



Fig. 1. ./. Small Olid of thctubr cf T,n,h. u„n,/;.<, 

 showing Uiat it, is not .•hamlnTcil. To ri'placo 

 the tigure in Plate I. 



Fig. 2. (I. Chamliered end of Tkukiio nouvkuica. 



Species o. (Fig. a, h, c, Mus. Bi-it.) 



Tkhepo Stutchborti. Ter. testd brevi, rufiindi! ; arrii 

 (inticd parvd, obtusd, auricula poat/cd jnircd, ni- 

 limdd; processit subumhonali expanso, valid! 

 rurvo; stijUs conicis, minute articulatis, lalcrihna 

 lenuifer sj^ivortis ; siljmld cmTa, tenui. 



Stutciiburt's Teredo. Shell short, rounded ; an- 

 terior area small, obtuse ; posterior auricle small, 

 roaiidcd; snbnmbonal process expanded, 

 strongly curved ; stylets horny, minutely arti- 

 culated, fineh" spinod at the sides; stem curved, 

 thin. 



Leaoh. MS. Mus. Brit. 



llah. Sumatra. 



Species 6. (Fig. a, b, c, Mus. Brit.) 



Tereho CAKlNATA. Ter. testd altiuscvld, valdi! arcuatd : 

 auricidd anticd expansd,elevatd,inlns validissimi 

 carinatd ; stylis corneii:, ehiHijatis, Iciiiiilni^, 

 stipidd elonrjatissimd. 

 The keeled Teredo. Shell rather high, much areheil ; 

 anterior auricle expanded, raised, very strongly 

 keeled, stylets horny, long, narrow, stem very 

 long. 

 Gray. MS. in Brit. Mus. 

 Eab. Drift-wood in British Channel. 



The stylets of Teredo bipennata are unequal, one 

 being short, wheat-eai'-likc, vrith very long stem, and 

 the other a much longer body with shorter stem. 

 The stylets of Teredo cariaata seem to differ fi-om 

 both. The valves in the latter are perhaps broader, 

 but the difterence is not verv certain or obvious. 



Species 7. (Fig. a, b, c, Mus. Brit.) 

 Teredo malleolus. Ter. testd parud, nlld, ohliqud, 

 a:'ii''<liitd, validissime arcuatd, area posticd bred, 

 a njHsId, versus umbonem recurcd, elevatd ; yro- 

 ci'ssii. umbonali oblique cured, ad tenuininn 

 elinild ; palmulis brevissimis, tedaceis, latis, 

 flil'^ild hre.ci, incvrvd. 

 The l.t;i.e iiammeb Teredo. Shell .small, high, ob- 

 1 '[ I ■, uairow, very strongly arched ; posterior 



area sli<.rt. narrow, recurved towards the umbo, 

 raised; uiiiboiial jiroce.ss obli((uely curved, club- 

 shaped at the end; iiallets very short, shelly, 

 broad, with short stem, bent forwards. 



TturrON. Forbes and llanlev. lirit. .Moll. 



Rub. Torquay. 



Species K. (Fig. a, h, Mus. Brit.j 



Teredo me,;atiioi;ax. T,t. ledd ma,j,id, solid,!. yot,u,.ld. 

 anfin- In/i.sinii hlaul,; ralidi arnnitd, und.mil.ns 

 rotniidi^, ain-iruh! i,„sti,-d hr.'ci, ,;.i,n,d,i. .^mr.iiiir 

 dor.<ali luudn rl.rat,.: a red autird hrrri. am: 

 mediaiiix rluiujalix. nilto trrhiinali inaiiim: prn. 

 cessu s„l,iu„l,nin,!i lain. 



The liici-ciiEsTED Teredo. Shell large, solid, rounded, 

 anteriorly very widely gaping, strongly arched, 

 umbocs rounded, posterior auricle short, rounded, 

 dorsal margin a little raised ; anterior area short, 

 median areas elongated, with large terminal 

 callus ; subumlional jiroccss broad. 



Gould ? MS. Mas. Brit. 



Hab. N. America. 



(Fig. a, /,, 



Teredo cAMi-ANt'LATA. 7'< , 



pnstico-cenlrali hifd, 



.-.■»/r„ 



Mus. Brit.) 



h,i.-i 



'"I" 



aiirieidd /.n./ird ad jmu-t 



manjiii, ,„ Uilmihin lai: . .,■ 



arciiatim rieratd, iiiar,jn,e lalerali deelivi ; stijUx 



curneis, elo>i(jatis, diiitidiatim artieulis caiiqiaii.uli- 



forrnibus idriitque reeiirvo-spinosis ornatis. 



TuE campanulated Teredo. Shell white, rather broad, 

 posterior-central area broad, middle sulcus broad, 

 ridged ; posterior auricle narrowed at the junc- 

 ture, broadly expanded towards the lateral 

 margin, raised in a concave curve above, lateral 

 margin sloped downwards ; stylets horny, 

 elongated, ornamented half-way with bell-shaped 

 joints, having recurved spines on each side. 



Deshates. MS. Mus. Brit. 



Hab. ? 



The valves resemble those of Trredn bip.'iinal.' . 



but are much shorter and liroader in the eon- 



tinnation of the central areas below the auricle. 



The gi-eater difi'ercnce is in the ornamentation of 



the pallets. 



