PACIFIC COAST OLIGOCH ATA, 169 
My object is merely to call attention to this form which after all may be more distinct 
as more of its structure is known. In regards to the form of the spermatheecs it 
differs much more from Sp. Benhami than does the other subspecies Sp. guutemalensis. 
It is also much smaller. 
CHARACTERISTICS, 
Color is much lighter, more flesh and less violet than that of Sp. Benhami and 
Sp. guatemalensis, and the irridescence more faint. The species is smaller than 
Sp. Benhami, being about 9:em., about one-half the size of that species. 
Clitellum in the most developed specimen occupied xy—xxiy ventrally, dorsally 
it could not be properly defined. Prostates present with certainty in xxiii, xxiv, but 
owing to the somites being torn in xxy, xxvi I could not with certainty ascertain their 
presence there. 
Sete are similar to those in Sp. Benhami. The anterior xxii somites have 
much larger sete than the other, except the most posterior ten. The sets increase 
in size from somite ii to somite xy, then diminish backwards to xxiii, in which somite 
they are smaller yet, this size continuing to the tail, where at about ten somites from 
the anus the sete again begin to increase. There is no parietal gland in somite 
iii as in Sp. Hiseni, and this is the chief reason why I class this species under Sp. 
Benhami. The spermathece are in three pairs and open in front of 3 and 4 dorsally. 
Their shape resembles much more those of Sp. Hiseni than they do those of Sp. 
Benhami. The apical end is globular and very much larger than the basal part. 
The spermathecz are not trowel-like. I give some outline drawings of the sperm- 
athecee taken from one and the same individual. 
Sperm-sacs are very large in xi, xii, the one in xxii projecting into xxiii filling 
the somite also. The sperm-sacs are coarsely lobulate, much less so than in Sp. Kiseni. 
The capillaries resulting from the lateral integumental vessels are very large 
in the anterior six somites. The hearts also are very large and seem to fill all available 
space on the ecelomic cavity in vill, ix, x, Xi. 
Deltania Troyeri Eisen, n. var. crassa. 
Figs. 142, 143. 
Derinition. Size 45 mm. by 2 1-2mm. Septal glands in v and vi, about twice 
as thick as the septum. Spermathece each with two diverticles, which have the apical 
ends globular and inflated. Prostates thick, with the glandular part about 1 1-2 times 
longer than the thin muscular duct. Habitat, Baja California. 
In other respects like the type, judging from two dissected specimens. 
Habitat. Of this variety I possess only three specimens, from Ensenada de 
Todos Santos, in the northern part of Baja California, on the Pacific Coast side. They 
were taken in the same locality as A/eodrilus Keyesi, in the pure sand in the creek 
bottom, in a spot which had been kept moist by the accumulation of some sacks and 
rubbish. The specimens became strongly contracted, on account of the necessity of 
immediately placing them in alcohol. 
