640 



EEPORT — 1863. 



5!(. Semele deeisa 



<■>(). rupium 



(51. runrolineata 



()2. pulchia 



ti.'i. iiicongrua 



«;4. CiTminjria Califnrnica . . . . 



<> '. Donax f "alifornicus 



(!(). tlexuo.sus 



07. navicula 



<)•*. Heterorlonax bimaciilatus 

 (iO. Standella Californica . . . . 

 (■)'.) 6. nasuta 



70. plaiiulata 



71. i'alcata 



72. Raeta undulata 



T'-i. dementia sul'diaphana . . 



74. Amiantis callosa 



75. I'achj-desma crassatelloides 

 70. Psephis tantilla 



svnonnnic name may be reviyed in restricted sense. S^ecies= bianfftilata, 



?. Z. S. 185.-,, p. 230. 

 I5n. Srmele dca'sa, Conr. aiict. Large, roiifrh, like Penn-ian corrvgafa, but truncated. 

 00. iiewele rttpiiim, Sby. Smaller, roiijrh, swollen ; with smaller mautle-beud. 



Galapagos. Not r. Cp. 

 61. Semele rubrolineata, (? Conr.). Flattened, same shape, with faint sculpture each 



way, and pink rays. [Conrad's lost shell may be young deeisa.'] 

 02. Semele pukhin, Sby. Transverse, crowded concentric sculpture, with radiating 



lines at sides. Southern fauna. 

 6-3. Semele incongrua, n. s. Like pulchra, with concentric sculptiu'e differing in r. 



and 1. valves: fine radiating striae all over. 40-00 fm. c. Cp. 



64. Cumitigia Californica, Conr. auct. Maz. Cat. no. 44. 



65. Donax Califoniicus, Conr. (non Desh.) =o6esMS, Gld. (non Desh.). Smooth, 



stumpy : outline and colour variable. 

 00. Donate jiexuosus, Gld. Like punctostriata jun. with stronger keel, and no 



punctures. 

 67. Dmiax navicula, Sby. Maz. Cat. no. 77. From Southera faima. 

 G8. Hetervdonax bimacidatus. Broad var., generally violet, = P»ffw»no6(rt Pacijlcaf 



Cour.= Tellina vicina, C. B. Ad. Cape St. Lucas, A capulco, W. Indies. 



Family Mactrides. 



69. Standella Calif omica,C(mr. (non Desh.). Large, shaped like Schiz. Nuttallifhnt 



beaks naiTow. Mantle-bend separate from ventral line. 

 69 6. Standella ? var. nastda, Gld. (suppressed). Revived for young shells between 

 Californica and plnmdata, till more is known. 



70. Standella plamdata, Conr. Nearly as large ; shape approaching Mactrella e.rokta, 



71. Standella fakata, Gld. Otia. Shape like plamdata, but flatter. 



72. Haeta itndtdata, Gld. Otia. Like the Atlantic R. canaliculata, but reversed. 



Bare at S. Pedro, Cp. 



Family Veneridee. 



73. ? dementia suhdiaphana, n. s. Hinge normal, very thin, ashv. 



74. Amiantis callosa, Conr. (not auct.). Subgenus ol Callista : liinge-plate rough- 



ened as in Mercenaria : mantle-bend as in Dosinia. L. w. com. Cp. 



75. Pachydesma crassatelloides, Conr. auct. Subgenus of Trtgona, with fewer teeth : 



j\in. = stultorum, Gray. 



76. Psephis tantilla, Gld. Otia. Subgenus of Vmus : animal ovoviviparous. Teeth 



elongate, approaching Poc^ycfejnia. SmaU, with purple spot. 12-20 fin. c. Cp. 



126 



