230 



SCIENCE-GOSSIP. 



v. minor, Baud. There are also a v. minor, 



Locard, and a v. minor, Benson. 

 v. ventricosa, Baud, 

 v. broecki, Colb. 

 v. amplioides, Jordan, 

 v. striibeli, Reib. C. Verde Is. 

 v. succineaeformis, Linds. 

 v. sinistra, Baud, 

 v. ovata-normalis, Erd. 

 v. subovata, Locard. 

 v. opaca, Locard. 

 v. colleii, Hoyer. 

 v. kamtschatica , Midd. 

 Taylor considers the following four varieties to 

 be identical with our v. lutea, Mont. : — v. pachy- 

 gastra, Slav., v. crassa, Gass., v. solida, Pirona, 

 v. solidula, Htm. 



(c) Subsp. peregra, Mull. Some of the forms 

 referred here probably belong with ovata. 

 v. elongatissima, Gredl. 



v. products.. West. This and the last are pro- 

 bably forms of v. microstoma, 

 v. peregro -ovata, Rossm. Taylor says this is 



v. vulgaris, C. Pfr. 

 v. apricensis, Ad. = apricana, Bgt.= microstoma, 



Kob. =paludarum, Htm. = elongata, Cless. 

 v. melanostoma, Zgl. Very near v. marginata, 

 Mich, 

 f. major, West, 

 v. marginata, Mich.= labrnta, Rossm, Also 



British, 

 v. excerpta, Htm. 

 v. bakowshyana, Cless. 



v. alpicola, West. Very near to microstoma. 

 v. syriaca, Mouss. Jerusalem, 

 v. planulata. West, 

 v. pustulata, Gredl. 

 v. oblita, West, 

 v. torquilla, West. Siberia. 

 v. styriaca, West. Very near to marginata. 



f. minor, West, 

 v. ambigua. West, 

 v. ullepitsclii. West. = vaiblensis, Cless. Taylor 



thinks this is probably acuminata, Jeff, 

 v. atrata, Chem. 

 v. vattoni, Bgt. Tunis, 

 v. blauneri, Shuttl. Switzerland, 

 v. croatica, Zgl. Croatia, 

 v. vircns, Kob. 



v. peregriformis, Loc. Syria. 

 v. gibilmannica, Calcara. Sicily. v. solida, 



Phil., is the same. 

 v.thermalis, Boub.= salutiana, Fagot. Pyrenees, 

 v. putoni, Bourgt. Vosges. 

 v. heydeni, Kob. —attenuata, Cless. 

 v./ulva, Zgl. in F. Schm. 

 f. tschapechi, Cless. 

 f. curta, Kob. 

 v. curta, Cless. Also British. 



v. meta. West. Sweden. 



v./risia, Friedler. 



v. subdecollata, Cldl. Brit. Nat., Apl., 1891, 

 p. 62, = dicollata, And., not Jeff. 



v. rivularis, Scholtz: 



v. geisericola, Bk. Iceland. 



v. nivalis, Pini. 

 f. glacialis, Pini. 



v. nubigena, Bourgt. Alps. 



v. cyrniaca, Mab. Corsica. 



v. Idngsdorffi, Bourgt. Alpes Maritimes. 



v. rcynesi, Pal. France. 



v. albomarginata, Cless. Near to marginata. 



v. acutispirata, Cless. Taylor says this is 

 acuminata. 



v. cinerea, Cless. Tirol. 



v. fulcliella, Roff. 



v.compressa, Htm. Taylorsaj'sthisisouroWo«»a. 



v. bilabiata, Htm. Near to marginata. 



v. cariosa. Gene. Taylor says this and the next 

 are dccollata. 



v. corrosa, Von. Gall. 



v. forma-gigantea, Kob. 



v. rosea, Gallenst. 



v. paupercula, Poll. 



v. lilliputiana, J. Colb. 



v. antiscianae, Stef. 



v. cacrulea, Cless. 



v. vogtiana, Mortillet. 



v. frigida, Pini. A good species according to 

 Kobelt's Catalogue. 



v. typica, Kuster. 



v. sandrii, Parr. 



v. nimbosa, Mart. 



v. opaca, Zgl. 



v. fuliginosa, Zgl. 



v. consobrina, Zgl. 



v. nitida, Zgl. Also British. 



v. cornea, Zgl. 



v. rivalis. Stud. 



v. scalaris, A. Braun = our scalari/orme, Jeff. 

 Limnaea peregra is in conchology what the aquatic 

 Ranunculae are in botany, and in each case it is 

 found that the different varieties are correlated 

 with, and directly or indirectly due to, different 

 conditions of life. Such things as the flow of the 

 water, the substances it holds in solution, its 

 temperature, its permanence and depth, all have 

 their effect on L. peregra. It is a most interesting 

 study, productive of important results, to determine 

 the variations of this species in any given region, 

 and the environmental conditions of each. In such 

 a study, great care should be taken to determine 

 the identity or otherwise of the varieties found 

 with those previously described, not only in order 

 to avoid giving useless names, but also for the 

 purpose of learning, as far as possible, the geo- 

 graphical distribution of the varieties. 

 Mesilla,New Mexico, U.S.A. 





