182 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 106 



made from four specimens collected from a ground squirrel at 

 Topaz, Mono County, Calif. It is a description of a species that 

 could be included in Euschongastia, as the genus is known. 

 Probably the description is not adequate to identify any species 

 today. The type specimens (USNM 893) cannot be deciphered 

 by the methods now in use. 



The specimen described here was collected from Neotoma sp. 

 in Los Angeles County, Calif. So far as can be determined, its 

 morphology is consistent with the original description. It was 

 identified by Ewing as E. calif ornica. No useful function can be 

 attained by permitting names to lapse into questionable status 

 when there is reasonable evidence that they apply to specimens at 

 hand. The name E. californica is available. There is evidence 

 that the specimen being considered here is conspecific with the 

 type material. The name E. califot-nica is here applied to this 

 specimen, which is made the basis for a redescription of the 

 species. This specimen, in the U. S. National Museum, is on the 

 slide marked "C. E. F. X." 



The "luteodema'^ group 



The "luteodema" group is composed of two species, E. luteo- 

 dema and E. marmotae. The group is distinguished by the fol- 

 lowing combination of characters: No tibiala III, palpal claw 

 with three prongs, a single seta on coxa III, nonspecialized setae 

 on the legs with rather few and heavy, straight setules. The 

 scutum is wide and relatively flat; any ridges are weak. The 

 sensillae are clavate on distinct pedicels. The palpal setae have 

 a reduced number of setules. Dorsal setae have relatively few 

 and heavy setules. There is a tendency for the dorsal setae of 

 the first three posthumeral rows to occur out of line, or in bands . 

 rather than in rows. 



16. Euschongastia luteodema Brennan 



Figure 7,a; Plates 7, 17 

 Euschongastia luteodema Brennan, 1948, pp. 470, 472-473, figs. 5a-b, 12. 



Description: Size: Engorged length, 370 to 610; width, 300 

 to 640. 



Shape : Broad oval, sometimes broader than long. 



Color: Pale yellow (Brennan, 1948). 



Gnathosoma: Seta on palpal coxa with few setules. Seta on 

 palpal femur strong, with a few strong setules. Seta on genu 

 with about three to seven setules. Dorsal seta on tibia with about 

 three to six setules; lateral seta nude; ventral seta with about 



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