Enchytræidæ of the west coast of North America enchytridofw00eise Year: 1905 ENCHYTR^ID^ 45 cytes of medium size, globular^ with some six or more large and densely staining granules. Color pale citron yellow. Locality. — In plants brought from Alaska (probably Sitka or Juneau). Presented by Mr, Alexander Craw. A single specimen which was carefully narcotized and fixed in sublimate. Note. — The specimen having been received late in the year (Sept., 1897), the testes and ovaries had degenerated, as careful search failed to reveal any trace of them whatever. The sperm-sacs, on the con- trary, a
Enchytræidæ of the west coast of North America enchytridofw00eise Year: 1905 ENCHYTR^ID^ 45 cytes of medium size, globular^ with some six or more large and densely staining granules. Color pale citron yellow. Locality. — In plants brought from Alaska (probably Sitka or Juneau). Presented by Mr, Alexander Craw. A single specimen which was carefully narcotized and fixed in sublimate. Note. — The specimen having been received late in the year (Sept., 1897), the testes and ovaries had degenerated, as careful search failed to reveal any trace of them whatever. The sperm-sacs, on the con- trary, are in a fully developed stage, and full of spermatozoa. The spermathecEe and the sperm-ducts are also in a highly developed con- dition, and show no sign of degeneration. Characteristics. — Characterized by its spermathecaj, the diverticles of which are as long or longer than the duct, while the ampullar part is short. The sperm-ducts widen out to an atrium, the glands of wliich are comparatively long. The long ducts of the glandular cells are carried far down the sperm-ducts, opening into the duct all along its course down to the very pore. This species resembles greatly M. harrimani^ and may be said to be M'. harrimani with short sperma- thecal ampulla. Fig. 20. Mesejic/ty/rcBus grandts. DETAILED DESCRIPTION. Brain (fig. 20, c). — The posterior margin of the brain is so indis- tinct that it is impossible to say whether it is strongly concave or only slightly so. I have therefore dotted the line indicating the margin. This indistinctness is not due to any tearing in dissecting, but from the
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