170 CAMFOKNIA ACADEMY OF SCIENCES. 



EXTERNAL CHARACTERS. 



The variety resembles the maiu form in most respects, but is much larger, 

 especially thicker. The contracted specimens were as long as tiie longest of the main 

 form from San Francisco, when fully extended, and twice as thick, and must, when 

 alive, have measured 45 mm. by 2^ mm. Other external characters agreed exactly 

 with those of Deltania Troyeri type from San Francisco, California. The deltoid 

 arrangement of the ventral seta; in the genital region was identical, which satisfies me 

 that we in this arrangement have most important species characters between the 

 species of this genus. 



INTERNAL CHARACTERS. 



The variety differs from the type in two particular points. 



The »eptnl glands are present only in two somites, v and vi, and are exceedingly 

 thin, or about one-fourth as thick as those of D. Troyeri type. This refers to those 

 superior to the intestine. Those below the intestine I could not discern, as no sections 

 were made. The glands were lamellie-like, and only about twice as thick as the 

 septum. 



The spermathecf/} were thicker than those of the type, with more inflated diver- 

 ticula. 



The prostate was thick, and its glandular part about H times longer than the 

 very thin muscular duct. Two or three fully developed penial setie with each 

 prostate. 



Deltania Troyeri Eisen, n. var. lagunae. 

 Figs. 144-147. 



Definition. Size 32 ■mm. by 1 1-2 mm. No copiilatory impilhe. Seir.e a and 

 h ne.d posterior to clitellam, reach their final distance in the fifth somite posterior to clitel- 

 lum. Spermathecfe in ic twice as large as those of the type, contracted at center, apical 

 part swollen. Prostates more slender than in the type. Large ovisacs. Habitat, Baja 

 California, Sierra Laguna. 



DETAILED DESCRIPTION. 



Habitat. The exact locality in the Cape Kegion of Baja California and Sierra 

 Laguna is a camping-place called La Joya. There, where the trail crosses the creek 

 the water had backed up behind some fallen logs causing a miniature mudflat covered 

 with leaves and sediment. The specimens were found in the rotten wood and under 

 the decayed leaves in the mud. Altitude about 5500 feet. 



EXTERIOR CHARACTERS. 



The average specimen is larger than the type from San Francisco, the largest 

 specimen of the latter being smaller than the average mature specimens of the 

 variety laguna^. The two round copulatory palpilUe figured by me from D. Troyeri 

 are not seen in the variety. The sacs of penial setae in several dissected specimens 

 possessed each two penial setse fully developed, one having three, but of which one 



