348 Mr. J. Blackwall on newly discovered Spiders 



This species is elevately turbinate, with two conspicuous cari- 

 nate whorls and a deep perspective umbilicus. The fine lamella? 

 on the upper part of the whorls are bent or angulated in the 

 middle. 



4. Anatomus concinnus, A. Adams. 



A. testa ovata, depressiuscula ; spira parva, vix data, anguste et pro- 

 funde umbilicata ; anfractibus 2k, convexis, striis elevatis radian- 

 tibus et conceutricis concimic decussatis ; apertura obliqua, sub- 

 orbiculari. 



Hab. Rifunsiri ; 35 fathoms. 



Under the lens, this little species appears to be intermediate 

 in character between A. crispatus, Mem., and A. rcticulatus, Phil., 

 the decussation not being so fine as in the former, nor so coarse 

 as in the latter. 



5. Anatomus mirificus, A. Adams. 



A. testa ovata, depressa ; spira plana, late et profundc umbilicata ; 

 anfractibus 2h, planiusculis, lineis elevatis radiantibus et conceu- 

 tricis regulariter et concinne clatbratis, regione umbilicali sub- 

 locvi ; apertura pcrobliqua ; labio recedente. 



Hab. Lo-shan-kow, Shantung. 



In this large and very beautiful species the entire surface of 

 the whorls is regularly and delicately finely clathrate, and the 

 umbilicus is very wide and open. 



6. Anatomus stamincus, A. Adams. 



A. testa ovata, depressa; spira plana; umbilico mediocri; anfractibus 

 2|, planiusculis, lineis stamineis elevatis radiantibus (infra cariuam 

 validioribus) striisque concentricis elevatis late clatbratis, regione 

 umbilicali lineis elevatis concentricis instructo ; apertura rotundato- 

 ovata ; labio recedente. 



Hab. Tsu-Sima; 25 fathoms. 



This species is widely clathrate, with conspicuous thread-like 

 radiating and concentric lines, the former of which assume ou 

 the spire a lamellar character; the umbilicus is moderate. 



XXXIX. — Descriptions of newly discovered Spiders captured in 

 Rio Janeiro by John Gray, Esq., and the Rev. Hamlet Clark. 

 By John Blackwall, F.L.S. 



A highly interesting collection of spiders made in Rio Janeiro, 

 chiefly among the Organ Mountains, by John Gray, Esq., and 

 the Rev. Hamlet Clark, early in the year 1857, was, with great 

 liberality, presented to me by those gentlemen, to whom I avail 

 myself of this opportunity to express my obligation. From the 



