177 
2582 Vertigo Coloradoensis Arizonensis 
2583 Heliodiscus parallelus 
2584 Pupilla muscorum 
2585 Pupilla Blandi 
2586 Pupilla syngenes dextroversa 
2587 Pupoides marginatus 
2588 Pupoides hordaceus 
2589 Bifidaria pellucida hordeacella 
7 — EEE 
2590 Cockerell, T. D. A.: 
Snails of New Mexico and Arizona. Nautilus 19:67-71. 
In part a review of the next paper. 
——_—— 9 
2591 Pilsbry, H. A.: 
Mollusca of the southwestern states. Phila. acad pr 
1905. 
Among the species are numbers 2592-2598, and others. 
2592 Ashmunella Levettei 
2593 Ashmunella Chiricahuana 
2594 Ashmunella metamorphosa 
2595 Ashmunella Ferrissi 
2596 Ashmunella angulata 
2597 Ashmunella fissidens 
2598 Ashmunella duplicidens 
2599 Genus Acanthina 
Under this are now placed the species of Monoceros. 
2600 Adeomelon Stearnsii Dall. 
2601 Msopus myrmecoon Dall. 
2602 Alabina Californica Dall & Bartsch. 
2603 Alabina cerithoidea Dall. 
2604 Alabina tenuisculpta Cpr. 
2605 Variety diegensis Bartsch. 
2606 Genus Amalthea 
Synonymy:—Hipponyx of former lists. 
2607 Amicula pallasii Midd. 
(Mr 
Shell nearly concealed by the hairy mantle, which is almost 
circular, and which covers the back of the animal except for 8 
small holes; this mantle or girdle bears unequal bunches of red- 
dish hairs; length 67 mm. Northern waters. The ‘Concealed 
Chiton.”’ 
2608 Ampullina purpurea Dall. 
Point Barrow, Alaska, etc. Shell about 2 inches long, purp- 
lish, with patches of white enamel near aperture; periostracum 
Olive with darker streaks. 
2609 Ancylus (Lanx) altus 
Synonym of A. patelloides Lea. 
2610 Ancylus Newberryi 
Synonym of A. patelloides Lea. 
2611 #Anisodoris nobilis 
Montereina nobilis MacFarland. 
2612 Arca reticulata Gmel. 
San Pedro, Cal., southward, as also the next, 
2613 Arca mutabilis Sby. 
2614 Archidoris Montereyensis (See 266). 
2615 Asthenotherus villosior Cpr. 
2616 Astrea undosa 
Better known as Pomaulax undosus. 
