512 MAZATLAN UNIVALVES 
Tablet 2431 contains 2 young gp. and one adult, perfect ; 
also two fragments exhibiting variations in sculpture. 
654. ANACHIS ALBONODOSA, 7. S. 
A. t. minore, conoided, marginibus spire valde excurvatis, 
antice angustd ; albido-virescente, maculis et lineis ziczac-for- 
mibus castaneis irregulariter ornatd, infa suturam viz impressam 
albo maculata ; anfr. iii. nucleosis, subeffusis, levibus, sed prop- 
ter lineas coloris pallidiores quasi corrugatis ; anfr. normali- 
bus iv. costis sepe subobsoletis, planatis, juxta basin obsoletis, 
strus spiralibus circa basin paucis; apertura elongata, con- 
tracta, contorta ; labro in medio arcuato, intus dentibus circiter 
vil. munito, canali postico angusto ; labio continuo, labro attin- 
gente, levi, parum extante. 
This extremely beautiful but very small species is remarkable 
for the appearance of corrugation (due to colour only) in the 
somewhat elongated nuclear whirls. A young shell has the ribs 
extremely faint, and the details of painting different. Long. ‘13, 
long. spir. ‘07, lat. *063, div. 40°. 
Hab.—Mazatlan ; 2 sp. off Chama and Spondylus ; Z’pool Col. 
Tablet 2452 contains the adult specimen. 
* 
¢ 
655. P ANAcHIS ————, sp. ind. (a.) 
Tablet 2433 contains 4 fragments of a species remarkable for 
its glossy texture and buff colour, irregularly spotted. The 
three nuclear whirls are very compact ; the rest rather effuse, 
and with broad, flattened, but sharply chiseled ribs, resembling 
in the adult state the young of Col. cervinetta. 
Hab.—Mazatlan ; extremely rare, off Spondylus ; Z’pool Col. 
656. P ANACHIS ————, sp. ind. (b.) : 
Tablet 2434 contains a very young sp. with 3 nuclear and 2 
normal whirls, very narrow and elongate, with fine radiating 
ribs ; white with 3 spiral light chesnut bands. 
Tablet 2435 contains a still younger sp., resembling the last 
but more compact; normal whirls commencing, irregularly 
spotted without bands, with a spiral line close to the suture. 
Hab.—Mazatlan ; extremely rare, off Spondylus; L’pool Col. 
