XX GEOGRAPHIC DISTRIBUTION. 



d'. Less straight, decidedly wider ; length 45-69 

 mill., 11-14 times the diam., dalli, p. 114. 



Peruvian Province. 



The west coast of South America from Peru southward is not 

 known to possess any shore Scaphopods ; the few species known 

 from off Chili are deep water forms of the Eastern Pacific, or mem- 

 bers of the Magellanic fauna. 



Magellanic Province. 



The few species yet known belong to widely distributed subgen- 

 era. D. megathyris extends north to the northern limit of the Pan- 

 amic fauna. 



D. majorinum, p. 27, and var. magellanicum. Magellan St., etc. 



D. lebruni, p. 102. Magellan Strait. 



D- megathyris, p. 67, off Chiloe I., 1,050-1,342 fms. 



C. (Polyschides) dalli, p. 155, west coast Patagonia, 122 fms. 



In this connection might also be mentioned D. ceras, p. 68, an 

 essentially mid-Pacific species, which has been dredged from 2,160 

 fms., west of Valparaiso. It is allied to D. Degathyris. 



California to Alaska. 



Eight species of Dentalium are known from this region, two of 

 them, semipolitum and agassizi being southern forms, reaching the 

 neighborhood of San Diego. D. neohexagonum and D. pretiosum 

 with its variety indianorum are abundant shore species, the others 

 being from deeper water. 



Six species of Cadulus have been described, mostly within the 

 past year. 



The following species extend into the Panamic province : D. 

 semipolitum, agassizi, dalli, C. californicus. The subgenus Rhabdus 

 is almost peculiar to this and the Panamic region ; the affinities of 

 the other species are with Panamic forms, with the exception of D. 

 pretiosum, which belongs to Antalis, a North Atlantic group. 

 D. neohexagonum. D. watsoni, 786 fms. 



D. agassizi, 822 fms. D. rectius, 13-786 fms. 



D. pretiosum. D. dalli, 265-786 fms. 



D. semipolitum. D. stearnsii, 786 fms. 



C. (Polyschides) quadrifissatus. C. aberrans. 



C. californicus, 252-822 fms. C. fusiformis. 



C. tolmiei, 60 fms. C. hepburni, 60 fms. 



