348 Mr. J. Blackvvall on newly discovered Spiders 



This species is clevatcly turbinate^ with two conspicuous cari- 

 nate whorls and a deep perspective umbilicus. The fine lamellfe 

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

 middle. 



4. Anatomus concinnus, A. Adams. 



J. testa ovatn, deprcssiuscula ; spira parva, vix elata, anguste ct pro- 

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

 tibus et concentricis concinue decussatis ; apertura obliqua, sub- 

 orbiculari. 



Hab, Rifunsiri ; 35 fathoms. 



Under the lens, this little species appears to be intermediate 

 in character between A. cris^jatus, Mem., and A. reticulaius, Phil., 

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

 as in the latter. 



5. Anatomus mirificuSj A. Adams. 



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

 anfractibus 2|, planiusculis, lineis elevatis radiantibus et concen- 

 tricis regulariter et concinne clathratis, regione umbihcali sub- 

 la3vi ; apertura perobliqua ; 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 stamineuSj A. Adams. 



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

 2|, planiusculis, liueis stamineis elevatis radiantibus (infra carinam 

 validioribus) striisque concentricis elevatis late clathratis, regione 

 umbilicali lineis elevatis concentricis instruct© ; 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 on 

 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 



