186 University of California Publications in Zoology [Vol. 11 



Scolecithrix mollis n. sp. 



PI. 10, figs. 14, 29; pi. 12, figs. 62, 65 



Adult female. The head is rounded; the rostrum is bifid, 

 with soft and rather delicate filaments of a characteristic .shape 

 (pi. 10, fig. 29). The last thoracic segment has rounded lateral 

 margins, the dorsal portion of the outline being indented, as 

 shown in plate 10, figure 14. The genital segment of the abdo- 

 men is about as long as the second and third together, and four 

 times as long as the fourth (pi. 10, fig. 14). 



The outer ramus of the first foot exhibits specific characters 

 (pi. 12, fig. 65). The fifth foot (pi. 12, fig. 62) is 2- jointed; the 

 second joint has a short, heavy spine on the distal end, a very 

 heavy dentate bristle at the middle of the inner margin, and two 

 tiny spines, one at the end of the joint, the other at the middle 

 of the outer margin. 



Length: 1.55 mm. (cephalothorax about 1 mm.). 



Coloration: Unpigmented and opaque in formalin. 



Occurrence : Haul 2567. 



Augaptilus calif ornicus n. sp. 



PI. 10, figs. 4, 22; pi. 11, figs. 31, 40; pi. 12, figs. 43, 48 

 Adult female. The body is somewhat flattened. The head 

 is rounded and carries the stiff, bifid rostrum on a projecting, 

 fleshy eminence (pi. 10, fig. 22). The last segment of the thorax 

 is rounded laterally and the cephalothorax is four and one-half 

 times as long as the abdomen. The genital segment protrudes 

 a good deal on the ventral surface and the aperture is surrounded 

 by hairs; the segment is as long as the other two together and 

 more than three times as long as the second segment (pi. 10, 

 fig. 4). 



The anterior antennae are 24-jointed, and are 7.3 mm. long. 

 The inner ramus of the po.sterior antennae (pi. 11, fig. 40) is 

 less than twice the length of the outer. The blade of the mandible 

 is elongated ; the arrangement of teeth on it is shown in plate 11, 

 figure 31. The maxillipeds have distinctly cupped bristles. 



The feet do not show characters that are easily described, 

 but the outer ramus of the firet foot, and the fifth foot, are 



