112 PROCEEDINGS OP THE AMERICAN ACADEMY. 



APPENDIX. 



After this paper was in type, I received from the Davenport Academy 

 of Natural Sciences, through the kind intervention of Prof. Herbert 

 Osborn, of Ames, Iowa, the single type of Ceuthophilus utahensis 

 Thorn, (see p. 102), and append a description of it to render this paper 

 more complete. It is not so closely related to C. valgus as I had sup- 

 posed from the description and figure, but belongs rather in the near 

 vicinity of G. uhleri and C. blatchleyi, though with the inferior sulcus 

 of the hind femora not so exceptionally broad as in those species, and 

 also with very different markings, in which respect it recalls rather 

 C.pallidus. The measurement of the hind tibiae given by Thomas 

 is too great. The specimen was collected in alcohol, but has since 

 been pinned. 



Brownish fuscous with dull luteous markings ; on the pronotum the 

 fuscous borders all the margins broadly, the anterior and lateral mar- 

 gins very broadly, sending backward from in front a broad mediodorsal 

 stripe nearly meeting the posterior bordering, and through it runs a 

 faint median luteous thread ; the posterior bordering throws forward 

 on either side a subdorsal tooth embracing the posterior end of the 

 mediodorsal stripe and leaving between the two a U-shaped luteous 

 mark which connects the luteous disks of either side, the latter of 

 which are more or less mottled with fuscous lines ; the me'so- and 

 metanotum are heavily spotted anteriorly with partly confluent luteous 

 spots, and the abdominal segments are more regularly margined an- 

 teriorly with luteous ; legs warm luteous, the hind femora with the 

 usual scalariform infuscations. The antennae are moderately slender 

 and more than twice, probably thrice, as long as the body, and the 

 legs moderately long. Fore femora no stouter than the middle femora, 

 a little less than half as long as the hind femora, scarcely more than a 

 third longer than the pronotum, the inner carina with a moderately 

 long preapical spine preceded by a shorter one. Middle femora with 

 a single moderately long spine on the front carina and on the hind 

 carina 1-2 short spines besides a moderate genicular spine. Hind 

 femora nearly as long as the body, somewhat more than twice as long 

 as the fore femora, moderately stout, only the distal sixth subequal, 

 about three and a quarter times as long as broad, the surface with a 

 very few raised points along the upper edge of the inner side, the 

 outer carina considerably and subequally elevated, with about fifteen 

 coarse but rather small subequal and inequidistant spines, the longest 



