26 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 7^ 



The tuberculate segments of Gosodesmus suggest the European 

 genus Fioria Silvestri,^° which also has two transverse rows of large 

 tubercles, but not in the form of longitudinal ridges. Fioria was- 

 described as related to Dolistenus^ but apparently is closer to Brachy- 

 cyhe and Ischnocyhe. The segments have two transverse rows of 

 large subconic dorsal tubercles, those of each side standing rather 

 close together, and the rows interrupted by a strong median groove. 

 First segment has 8 tubercles, the others 12 tubercles. Antennae- 

 with joint six the largest and joint seven unusually large, exceeding 

 joint five, the other joints distinctly smaller. Anterior gonopods 

 three-jointed, the posterior five-jointed. The body is very small, only 

 7 mm. long by 1 mm. wide, and with only 35 segments. 



Chamberlin also refers to Pseudodesnius Pocock, from the Malay 

 Peninsula as related to Ghsodesiivus, on account of the large dorsal 

 tubercles, but not in the form of longitudinal ridges. Fioria was 

 not with Andrognathus and Brachycyhe. The head is covered by 

 the expanded anterior segment and the body is strongly convex, each 

 segment with a pair of large dorsal processes and large lateral carina© 

 inserted very low, scarcely above the level of the legs. Also Pseudo- 

 desTrms is a relatively large animal, 34 mm. long and 4.5 mm. wide,, 

 with 76 segments. 



GOSODESMUS CLAREMONTANUS Chamberlin 



Gosodesmus claremontamus Chameb]klin, Pomona College Journal of Ento- 

 mology and Zoology, vol. 14, p. 9, with two figures, March, 1922. 



The largest specimen measured 13 mm. by 1.2 mm., with 52 seg- 

 ments. The color is described as reddish or pinkish fulvous, paler 

 underneath. The only locality is at Claremont, in southern 

 California. 



EXPLANATION OF PLATES 

 Plate 1 



Ischnocyhe pUcata, female, dorsal view. X 7.5 times. 

 Brachycy'be rosea, male, dorsal and ventral views. X 6.5 times. 



Plate 2 



Bdellozonium cerviculatum, male, dorsal and ventral views. 

 Siphonacme lyttoni, male, ventral view ; female, dorsal and ventral views. Pho- 

 tographs X 10 times. 



JO Ann. Mus, Civ. St. Nat. Genova, vol. 38, p. 664. pi. .?, 189S. 



o 



