HANNIBAL: CALIFOENIAN FKESHWATKE MOLLUSCA. 175 



Kafiiiesque, 1831; ? M. {Ambloxus) viridis, llafinesque, 1831; 

 Pleurocera acuta, llafinesque, 1831; M. elongata. Lea, 1831; 

 M. dislocata, llavenal, 1834; M. carinata, llavenal, 1834; 

 M. bella, Conrad, 1834; M. comma, Conrad, 1834; M. vestita, 

 Conrad, 1834 ; M.formosa, Conrad, 1834 ; 31. semicostata, Conrad, 

 1834; M. nassula, Conrad, 1834; M. congesta, Conrad, 1834; 

 JiT. ea:«7<'s, Haldem an, 1840; 21. catenaria. Lea, 1840 (preocc.) ; 

 M. cahnoides. Lea, 1840; 11. Boykiniana, Lea, 1840; M. sutu- 

 7-alis, Haldeman, 1840 ; If. htternipta, Haldeman, 1840 ; M. 2)icta, 

 Lea, 1841 ; M. Ocoeensis, Lea, 1841 ; If. lavigata, Lea, 1841 ; 

 M. nitens, Lea, 1841 ; M. dubiosa, Lea, 1841; M. gibbosa, Lea, 

 1841 ; M. Edgar ia7ia, Lea, 1841 ; M. nttida, Lea, 1841 ; 

 M. nodulosa. Lea, 1841 ; M. Nicldiniana, Lea, 1841 ; M. circincta, 

 Lea, 1841; M. castanea. Lea, 1841; M. tenebrosa. Lea, 1841; 

 M. sordida, Lea, 1841 ; M. costulata, Lea, 1841 ; M. dubia, Lea, 

 1841; Jf. stn'afa. Lea, 1841 (preocc); M. blanda, Lea, 1841; 

 M. teres, Lea, 1841; M. Potosiensis, Lea, 1 841 ; M. decora, Lea, 1811; 

 M. riifa, Lea, 1841 ; M. crebricostaia. Lea, 1841 ; If. jViagraensis, 

 Lea, 1841 ; J/", terehralis. Lea, 1841 ; M. Curryana, Lea, 1841 ; 

 31. Tronstiana, Lea, 1841; 31. ehemim. Lea, 1841; 31. acnto- 

 carinata, Lea, 1841 ; 31. glabra, Lea, 1841 ; 31. sulcosa. Lea, 1841 ; 

 3f. columella, Lea, 1841 ; 31. caliginosa. Lea, 1841 ; 3L concinna. 

 Lea, 1841 ; 3f. suhsolida. Lea, 1841 ; 31. Warderiaua, Lea, 1841 ; 

 M. Lecontiana. Lea, 1841 ; 31. clavceformis, Lea, 1841 ; 31. perfusca, 

 Lea, 1841; 3£. obtma, Lea, 1841; 31. plicattda. Lea, 1841 

 (preocc); M. Taiiiana, Lea, 1841; 31. corrugata. Lea, 1841 

 (preocc); 31. gracilis, Lea, 1841; 31. Kirtlandiana, Lea, 1841; 

 31. monozonalis, Lea, 1841 ; 31. strigom. Lea, 1841 ; 31. sub- 

 cylindracea, Lea, 1841; 31. Babylonica, Lea, 1841; 31. rufula, 

 Haldeman, Lea, 1841 ; M. gracilis, Anthony in Haldeman, 1841 

 (preocc) ; 31. bella-crenata, Haldeman, 1841 ; 31. costifera, 

 Haldeman, 1841 ; 31. approxima, Haldeman, 1841 ; 31. symmetrica, 

 Haldeman, 1841; 31. mtersita, Haldeman, 1841; 31. unicalis, 

 Haldeman, 1841; 31. rugosa. Lea, 1842; M. expansa. Lea, 

 1842; 31. striatula. Lea, 1842; 31. Icevis, Lea, 1842 (preocc); 

 31. Beshayesiana, Lea, 1842; 31. laevigata. Lea, 1842 (preocc); 

 31. rtifescefis, 'Lea,' De Kay, 1843; 31. gemma, De Kay, 1843 ; 

 3f. bizonalis, De Kay, 1843 ; 31. substricta, Haldeman, 1844 ; 

 31. Curryana, Lea, 1844; 31. lugubris. Lea, 1844; 31. abrupta, 

 Lea, 1845; 31. ovoidea, Lea, 1845; 31. cari7iocostata, Jjen, 1845; 

 3f. Alexandriensis, Lea, 1845 ; 31. spurca. Lea, 1845 ; 31. Buddii, 

 Lea. 1845; 31. Haleiana, Lea, 1845; 31. pallexcens. Lea, 1845; 

 3f. modesta. Lea, 1847; 31. spinalis, Lea, 1847; 31. symmetrica, 

 Conrad, 1849 (preocc.) ; 31. nebtdosa, Conrad, 1849; 31. per car i- 

 nata, ConvaCi, 1849; 31. perangulafa, Conrad, lSi9 ; 31. sublirata, 

 Conrad, 1850; 31. brevii^pira, Anthony, 1850; 31. succinulata, 

 Antliony, 1850; 31. inornata, Anthony, 1850; 31. abbreviafa, 

 Antliony, 1850; 31. bicolorata, Anthony, 1850; 31. densa, 

 Anthony. 1850; 31. elata, Anthony, 1850; 31. tracta, Anthony, 

 1850 ; 31. inempta, Anthony, 1850 ; 31.pulcheUa, Anthony, 1850; 



