. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. 104 EISEN HENLEA EHRHORNI sp. nov. p1. XV, figs. 2-6; text-fig. 69. Definition. — Length 12 mm., width .5 mm. Somites about 67. The anterior few somites deeply pluri-ringed; the posterior ones, com- mencing with about VII, are smooth and indistinct. Setas generally four in each fascicle, the inner setae much smaller. The most ventral seta in the ventral fascicles and the most dorsal seta in the lateral fascicles are larger than the others. No dorsal pores. Head-pore large, be- tween prostomium and somite I. Prostomium short,
. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. 104 EISEN HENLEA EHRHORNI sp. nov. p1. XV, figs. 2-6; text-fig. 69. Definition. — Length 12 mm., width .5 mm. Somites about 67. The anterior few somites deeply pluri-ringed; the posterior ones, com- mencing with about VII, are smooth and indistinct. Setas generally four in each fascicle, the inner setae much smaller. The most ventral seta in the ventral fascicles and the most dorsal seta in the lateral fascicles are larger than the others. No dorsal pores. Head-pore large, be- tween prostomium and somite I. Prostomium short, blunt, and rounded. Clitellum XII and XIII. Sexual papillas small and square. Septal glands in IV to VI. Peptonephridia extending into VI. Brain oblong, posteriorly truncated, anteriorly convex. Dorsal vessel rises in VIII. Intestine tubular until VIII, in which somite it is fur- b. Fig. 69. He?ilea ehrhortn. nished with two lateral diverticles. Sacculated intestine commences in IX. Spermathecae with pyramidal ampulla and furnished with three knob-like diverticles. Penial glands of four kinds, confined to the bulb. Nephridia large, with large anteseptal; inner ducts of varying thickness. Lymphocytes large, as wide as the body-wall is thick, rounded-oval. Color yellowish-white. Locality.—Mountain View, San Mateo County, California. Col- lected by Prof. Edward M. Ehrhorn, the well-known entomologist, for whom the species is named. DETAILED DESCRIPTION. Sctce. — The setae are more curved in the anterior somites than in the posterior ones. The most ventral sette are very much larger and especially thicker than the other setae in the ventral fascicles. In Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harriman Alaska Expedition (1899); Washington Academy of Sciences (Washington, D. C. ); Harriman, Edwa
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