Hydrobiidae. 315 



III 5. H. musaensis Fefld. Testa ovato-conica , minus acmninata [quani 

 in H. gagatinellal, aut iudumento fusco, haud nitente, aut granuloso, nigro munita, 

 (sub eo viridescenti-cornea, nitens), subtiliter striata; anfr. (>, paullo convexi, 

 regulariter crescentes, ultimus sat ventrosus, infra valde iuflexus; sutura con- 

 stricta; apertura ovata, infra rotundato-protracta ; peristoma acutum, columella 

 leviter arcuata, rimae augustae umbilicari late apposita. — Long. 4,5 — 5, lat. 2,5 mm. 



Distrib. : Litora maris rubri, Ain-el-Musa, penins. Sinait. (Frauenpeld), 



Habit. : ^lalta ( Westerhnd). 



III 6. H. algerica West. Testa rimata, conica, subtiliter striata, livide 

 griseo-flavida ; spira '/s lougior quam apertura, conica, apice gracili; anfr. 5^2, 

 rapide crescentes, convexi, ad suturam profundam distincte constricti, antepenulti- 

 mus fere triplo priore longior, vix V^ penultimo brevior; sutura paullo obliqua; 

 apertura elliptica, supra paullo angustior, sed rotundata, peristoma continuum, 

 labro recto, labio supra late reflexo et afflxo. — Long. o, lat. 2,5, apert. l.o mm. 



H a b i t. : Algeria i Westerlund). 



m 7. H. Brusinae (Bourgt. in sclied.) West. Testa exumbilicata , an- 

 guste ovato-conica , tenuis, subtilissime striata, viridescenti-cornea ; spira acuta 

 conica, quam apertura paullo longior; aufr. 5^2, sat celeriter crescentes. convexi, 

 ultimus elongatus, fere longitudine spirae; sutura paullo impressa paullo obliqua; 

 apertura auguste ovata, supra augulata, peristoma callo tenui conjunctum, labro 

 paullum curvato, margine columellari super rimam umbilicarem reflexo et appresso. 



— Long. 3, lat. 1,75 ram. 



Habit. : Dalmatia (Stossich, Westeklund). 



m 8. H. declinata Frfld. Testa anguste sed profunde perforata. conica, 

 pallide cornea, supra plerumque fusco-flavida, satis solida, paullo pellucida, haud 

 uitens, in anfractibus saepe scabra, velut desquamata; spira fere duplo longior 

 (|uam apertura, acuta; anfr. 5 '/2 convexi, fere scalariformiter constricti; apertura 

 dextrorsum versa , elongato-rotunda , paullo angulata ; margo columellaris leviter 

 reflexus. — Long. 2,1, lat. 1,2 mm. — Var. !<oreUa West. 



Habit.: Croatia, Dalmatia: Budua; Morea (Frauenfeld). — (VMesopotamia.) 



in 9. H. Thiessae (Cless. in sched.) West. Testa longe rimata, elato- 

 conica aut conico-turrita , nitens, clare coruea aut albida; spira gracilis, conica, 

 (luam apertura multo longior; anfr. 6 — 6^/2, celeriter crescentes, sat convexi, 

 ultimus vix ^,7 longit. testae, penultirao paullo major. convexo-rotundatus , basi 

 Virevius protractus quam ad suturam ; sutura sat profunda, obliqua ; apertura parva, 

 ovata, supra augulata, peristoma continuum, margo columellaris supra adnatus. 



— Long. o. lat. 1,5 mm. 



Habit.: Insula Euboea (W^esterlund). 



m 10. H. Maltzani ICless. in sched.) West. Testa subtiliter rimata, gra- 

 cilis, couica, albido-cornea, pellucida; spira gracilis, conica. acuta, dimidio longior 

 quam apertura; anfr. 5^/2, sensim cresceutes, convexiusculi. sutura impressa, ultimus 

 paullo ventricosior, lira spirali media munitus ; apertur aovata, supra acutangula, peris- 

 toma continuum, margine columellari paullum expauso. — Long. 3,5, lat. 1,65 muu 



H a b i t. : Creta ( Wksterlund). 



III 11. H. haesitans \Vest. Testa rimato-perforata, elongato-couica, apice 

 ol)tusiuscuIo, subtiliter striata, albida aut clare cornea, haud niteus; spira elou- 

 gata, conica; anfr. 5, valde couvexi, supra ad suturam profundam sulciformem 

 impressi, ultimus latus, brevis, interdum a penultimo solutus; apertura rotundato- 

 ovata, supra perobtuse angulata, peristoma rectum. — Long. 2,75, lat. 1,5 mm. 



Habit.: Morea : Santa Maura, Megali Vressi (Westeklund). 



