490 Dr. Cantor on the Flora and Fauna of CkuMH, 



alata, tumidiuseula, facie externa tuberculato-plicata, rugis seriebu? 

 duabus e linea. umbonali divaricantibus, posterioribus simplicioribus, 

 anterioribus basalibusque plerumque nodulosis ; natibus mediocriter 

 prominentibus ; epidermide nigrescente, striis subimbricatis. Valvae 

 sinistra3 dente cardinali interiori versus angulum marginis posterioris 

 basalisque spectante, ad latus exterius laminis pluribus munito, dente 

 exteriori pene obsoleto, brevi, a basi interioris divaricato ; dente la- 

 terali brevi crasso. Long. 2" 65, lat. 3*5 poll. 



*Corbicula fuscata. Testa cordata subinsequilaterali, fusco-virente, 

 tumidiuscula, polita, intiis et ad nates violacea, extrinsecus sulcis 

 crebris circumdata, rugis intersitis subimbricatis ; margine interiori 

 plerumque nigrescente ; natibus decorticatis. Lat. 1*3, long. 1*15 

 poll. 



Habitat. Canals. 



Venus sinensis, Auct. Testa orbiculata, convexa, albida, margi- 

 nibus violaceis, denticulatis, extrinsecus radiis violaceis plicisque 

 concentricis exilissimis ornata ; disco plerumque feiTugineo, dente 

 cardinali postico bifido, ssepe bilobato, laminae cardinalis extremitate 

 postica concava. Long. 1*7, lat. 1*65 poll. 



Habitat. Said to inhabit canals. 



* Sanguinolaria iridescens. Testa subelliptica, compressa, albida, 

 iridescente, versus apicem incarnata, exilissime transverse striata, 

 striis obsoletis radiatim decussata ; latere postico subrostrato, sub- 

 angulato, antico longiore, rotundato. 



Habitat. Said to inhabit canals. 



*Novaculina constricta. Testa alba, tenui, transverse oblonga, 

 laBviuscula, extremitatibus rotundatis, radio mediano subconstricta, 

 epidermide olivaceo-flavescente, postice quasi capillis intertextis ad- 

 haerentibus vestita. Lat. 2 '45, long. 0"75 poll. 



Syn. Solen constrictus, Lamarck. 



6. ANNELIDES. 



HiRUDISTIDjE. 



*Bdella lineata. B. superne brunneo-viridescens, linea dorsali me- 

 dia, aurantiaca, infra griseo-flavescens. 



Greenish brown above, with an orange-coloured dorsal line ; be- 

 neath yellowish gray. 



? ? 



7. CRUSTACEA. 

 Decapoda Brachyura. 



*Carcinus olivaceus. C. supra olivaceo-viridescens ; infra albus ; 

 parte anteriore marginis interni femoris spina, armata. 



Greenish olive above ; beneath white, with a single spine on the 

 anterior part of the internal margin of the femur. 



*Sesarma tetragona. S. superne viridis, infra griseo-viridescens ; 

 brachiis manibusque rubris. 



Carapace green ; sternum and legs greenish gray ; arms and claws 

 red. 



Sesarma quadrat a, M. Edwards. 



