TABLE 6

Abundances of snail species in mop samples from 38 small springheads (localities shown in Fig. 2) L=Locality, N=Number of samples, Pal = Paludiscala caramba, C.h. = Coahuilix hubbsi, C. n. sp. = Coahuilix n. sp., "S" = "Stiobia" n. sp., Dur = Durangonella coahuilae, Nym = Mymphophilus minckleyi, Mex = Mexipyrgus churinceanus

L	N	Pal	C.h.	C.n.sp.	"S"	Dur	Nym	Mex	Total
2	2	1				10	na	na	11
12	2		1			75			76
14	1			2	1	13			16
15	2				17	298			315
16	9	98	85	1	63	459			706
17	5	118		1	2	23			144
18	4	6	1	2			16		25
23	2	95				3			98
24	4	431		6		23			460
25	2	14			1				15
26	1	40				6			46
27	1	110							110
28	4	237	2	2	41	48	1		329
31	3	16	1	1	98	2			119
32	1	5							5
33	2	200							206
34	2	211	1		1				213
35	2	203	2			6			211
38a*	4	13	35	1	214	35			298
b*	2	1			1	6			8
40	1				2				2
52	1	2			131	10			143
56	1	1	1			18			20
57	3	38			290				328
58	2	19	29		3	137			188
59	2	29							29
60	2	186		1	4	4			195
61	1	100	3			44			147
62	2	199			135				334
63	8	444		3					447
64	4	450	40	3		1			494
65	6	633	9	3	6	104		1	755
66	2	51	8						59
67**	10	982	119	15	100				1216
58	2	11	8						19
69	2	142		2					144
72	2	4			4	2			11
77	2				101	27			128
total	107	5090	350	43	1215	1354	18	1	8071

*"a" and b are from small springs adjoining the larger cool spring at Locality 38

**Orygoceras (?) sp. also found in subsequent samples from this spring