1862.] MR. A. ADAMS ON NEW SPECIES OF LIMOPSIS. 229 



5. UESCKirTioNS OF SOME New Species of Limopsis from 



THE CXJMINGIAN COLLECTION. By ArtHUR AdAMS, F.L.S. 



There have been sis recent species of limopsis ah-eacly described, 

 nrmely, L. midtistriata, Fortk. ; L. heldieri, Adams & Eeevej L. 

 canceUaia, Eeevc ; L. loreaUs, Woodward ; L. pygmcca^ Phil. ; and 

 Jj. obloiiga, A. Adams. To these I now add five more recent species 

 from the seas of Japan, one from the Cape, and two from Lizard 

 Island in Torres Straits. Those from Japan and the Cape were 

 obtained by myself; and for the Australian examples we are indebted 

 to Mr. Macgillivray. Nearly all the known species are in the mag- 

 nificent collection of Mr. Cuming. 



1. Limopsis japonica, A. Adams. 



L. testa orbiculari vix cequilaterali, albida aut rvfescente, costel- 

 lis radiantibus striisqi(e elevatis concentricis concinne cancel- 

 lata, epidennide fusca dense filosajfilis infimbriis concentricis 

 dispositis, obtecta, intus rvfo-fusca, radiatim strigosa, albo 

 marginata ; margine ventrali explanato, intus integro. 

 Hab. Kuro-Sima, 57 fathoms; Kiusu, 26 fathoms. 

 This species in form and sculpture most nearly resembles Pectiin' 

 cuius cancellatus of Reeve, which is a true Limopsis. It is, how- 

 ever, much larger, the radiating ribs are equal, and the hinge-margiu 

 is not straight, and is extended in the form of auricles. 



2. Limopsis obliqua, A. Adams. 



L. testa valde obliqua, oblonga, incBquilaterali, tumidula, albida, 

 longiore quam lata, latere antico brevi, postico longiore, ra- 

 diation striata, liiis cremdatis concentricis dccussata, epidermide 

 dense pilosa fitsca obtecta ; linea curdinis arcuata, fossa magna 

 triangulari; intus alba radiatim strigosa, margine ventrali intus 

 Icevi. 

 Hab, Uraga, 21 fathoms. 



This species is even more oblique than L. oblonga, A. Ad. (Ann. 

 and Mag. Nat. Hist. 1860), from which it ditfers in being oval, and 

 not trigonal, in the broad triangular cartilage-pit, and in the ventral 

 margin not being internally crenate. 



3. Limopsis cumingi, A. Adams. 



L. testa ovata, valde obliqua, inceqidlaterali, latiore quam lovga, 

 compressa, albida, concentrice lirata, interstitiis longitudinaliter 

 radiatim striatis, latere antico brevi, postico midto longiore 

 dilatato, epidermide j^Hosa pallide fu&ca, pilis in Jimbriis con- 

 centricis dispositis, obtecta, intus alba, margine ventrali hitiis 

 Icevi. 

 Hab. Gotto, 48 fathoms; Santanomosaki, .5.5 fathoms. 

 This species somewhat resembles L. belcheri in form, but the 

 posterior side is regularly arcuate, and the hinge-margin is bent in 

 the middle ; the teeth, moreover, are much less numerous, and the 

 ventral marsiin of the valves is not crenate within. 



