82 Mr. R. B. Hinds's descriptions of new Shells. 



Neritina Armstrongiana. Testa subglobosa, striata, nigra, aureo- 

 guttata ; anfractu ultimo spinis coronato ; apice eroso ; labio in- 

 terno unico dente obtuso munito ; apertura cserulescente. PI. VI. 

 fig. 2. 

 Hab. Streams, Marquesas Islands. 



This pretty species I have much pleasure in naming after 

 my esteemed friend Dr. Armstrong, the Deputy Inspector of 

 the Naval Hospital at Plymouth. The spines are much in the 

 same state as in N. brevispinosa, and the exterior is covered 

 with a number of small spots of a golden colour. I never saw 

 it in any other group of the Pacific Islands, so that it is most 

 probably confined to the Marquesas, which generally have 

 very little of novelty either for the botanist or zoologist. 

 Patella insessa. Testa conica, ovali, fusca, tenue transversim striata, 



intus alba ; apice maculis albis ornato. Plate VI. fig. 3. 



Hab. On sea- weed, San Diego, California. 



A small horny brown shell, remarkable for the white mark- 

 ings on the apex, usually three, but sometimes four in num- 

 ber, the central being rather the larger. It was always found 

 imbedded in the fronds of a Laminaria, which it was often 

 necessary to cut with a knife before the shell could be libe- 

 rated. 

 Patelloida depicta. Testa minima, lineari, diaphana, alba, lineis runs 



apice radiantibus ; lateribus compressis ; longa quadruplo quoad 



longitudinem. PI. VI. fig. 4. 



Hab. On sea-weed, San Diego, California. 



This is a small delicate shell, white, with irregular brown 

 rays diverging from the apex, about eight in number on each 

 side, sometimes disposed to fork ; clouded with a dark spot 

 anteriorly ; and the sides much compressed, so as to make 

 the shell four times longer than broad. My largest specimen 

 is only four-tenths of an inch long. They were found abun- 

 dant on the surface of Zostera. The British Museum, Messrs. 

 Cuming, S. Hanley, and Lovell Reeve have specimens from 

 me, which I mention that they may at once identify them. 



In some respects a similar shell has been described by Con- 

 rad from the coast of Massachusetts, under the name of Pa- 

 tella alveus, in the i Journ. Acad. Nat. Sciences/ vol. vi. p. 267. 

 1. 11. f. 20 ; and as Patelloida alveus by Couthouy in the Boston 

 1 Journ. Nat. Hist./ vol. ii. p. 177- But this shell is only twice 

 as long as broad, and is described with " finely radiating striae," 

 and some other characters not found in our shell. 



Scarabus pollex. Testa ovata, compressa, fusco-castanea, longitudi- 

 naliter valde striata; striis subarcuatis; anfractu ultimo confuse 

 fasciato. PI. VI. fig. 5. 

 Hab. Feejee Islands. 



