Vol. 3] Esterhj.— Cope pod Fauna. 67 



Length : Female, 4.4 mm. 



Coloration : Rather opaque and without pigment. 



Occurrence : One female, Coll. 1030. 



This animal is undoubtedly aS*. magna (Scott), although the 

 fifth feet vary slightly from his and Giesbrecht's drawings, espe- 

 cially in the relative and actual lengths of the spines. 



Scolecithrix inornata n. sp. 



PI. 9, fig. 18; p]. 11, fig. 37; pi. 13, figs. 65, 73. 



Female: Head without crest, regularly rounded (PI. 9, fig. 

 18). Last thoracic segment rounded at sides, but with an inden- 

 tation above and below the middle of the posterior border (PI. 11, 

 fig, 37). Genital segiuent as long as the next two, the second as 

 long as the third and anal together; the anal segment is about 

 half as long as the preceding one. All of the abdominal segments 

 are broader than long-. The maxilla has four bristles on the 

 second basal, eight on the outer rannis, and seven on the inner 

 rannis; first outer marginal lolie with nine. The anterior maxil- 

 liped has three vermiform and five pencillate sensory append- 

 ages. First foot with 3-jointed outer ramus, all the joints having 

 outer marginal spines, those of the first two being of equal 

 lengths. The outer marginals of the outer ramus of the second 

 foot are all of nearly equal lengths ; the faces of the rami are set 

 with spines, the larger ones being on the inner ramus. The teeth 

 of the terminal saw are very closely set (PI. 13, fig. 65). The 

 spines l)ecome smaller in the third and fourth pairs. The fifth 

 feet are 2-jointed, with two heavy terminal spines, the inner one 

 being slightly larger (PI. 13, fig. 73). 



Length : Female, 4.3 mm. 



Coloration : Slight yellowish tinge to the body, in formalin. 



Occurrence: One female. Coll. 1030. Type in the collection 

 of the University of California. 



The fifth feet resemble those of 8. auropccten Giesbrecht, but 

 the bristling of the maxilla and the relative sizes of the animals 

 {auoroprctcn 1.8 mm. long) are distinguishing characters. 



