MOLLUSCA TESTACEA. 445 



regards as organs of taste. On each side are two branchial lamella?, con- 

 joined anteriorly, posteriorly free. On each side two oral lobes. The 

 intestine passes in a direct line, and without offering any dilatation, to the 

 anus. Of sexual organs the author has found merely an ovary without 

 excretory canal, which reaches as far as the internal opening of the anal 

 siphon. The foot is small, simple, and has at the extremity a minute round 

 impression, which may serve to the animal as a suctorial disc, for the pur- 

 pose of affixing itself. In the nervous system, only the pharyngeal ganglion 

 and the posterior ganglion with its filaments were observed. On account 

 of the great correspondence between the animal and that of 3Ii/a, the author 

 replaces the genus Anatina in the Mya family, and also notices that the 

 calcareous body at the hinge (1'osselet) is present in A. tnmcata and in 

 A. Liautaudi, Mittre, and that, on the other hand, it is wanting in A. subros- 

 trata, Lam., A. hispidula, Cuv., and A. Leaana, Conrad. 



Lastly, he also describes a new species of this genus, Anatina Liautaudi : 

 testa minima, trausversa, utrinque rotundata, fragili, pellucida, autico laterc 

 posteriorique hiante, transversini striata, punctis miuimis extus asperata. 

 Manilla. 



A. elegans, Philippi (Menke, Zeitsch.), differs from A. truncata, Lam., in the 

 rectilinear abdominal border, and in the posterior border being truncated in 

 a straight line, perpendicularly. China. 



Solen BoucJiardii, Potiez et Michaud (Gal. p. 261) : testa oblongo- 

 ovali, recta, convexa, transverse striata, ntriuque rotuudata, sub epiclermide 

 fidva, intus alba ; alterius valva; cardine bideutato, alterius uuidentato. 

 Gulf of Guinea. According to the drawing, the shell is subtruncate 

 anteriorly, the cardinal teeth are placed a little behind the middle. 



To the genus Glauconoma, which was first placed by Gray near Venus, and 

 by Reeve in the family of the Soleuacea?, Hanley has referred Solen virciis. 

 (Proceed. 13, Feb. 1844; ib. Feb. 1844; Annals, xiv, p. 382.) Lovell 

 Reeve describes seven new species of this genus, which are figured in his 

 Couchologia icouica. G, rnyosa, straminea, corruyatn, from the Island of 

 Negros, curia, from Luf on, cerea, from the Gauges. All inhabit the mouths 

 of the rivers. 



Jonas (Menke, Zeitschr. p. 135) gives some critical remarks upon the 

 genus Fistulana. It is identical with Gastrochtf/ia, Speugler, who first in 

 1783, described three species, and a fourth subsequently, in 1793. Gastro- 

 cheena mumia, Sp.,is identical with Fistiilana clava, Lam. Fistulana yregata 

 is a Teredo, and must again receive the name of Teredo clava. Gastr. cunei- 

 formis has been correctly separated by Philippi from Pholas pusilla, Poli. 

 (Gastr. Pholii, Phil.) ; Gastroch. modiolina, Lam., is also a distinct good 

 species. Gastr. cymbium is unknown to the author. Gastr. rostrata, Sp., 

 on the other hand, is described at length ; it is figured in Chemnitz, x. f. 

 1680, 81. 



