146 



e. The sulcus very broad ; the spines of the outer carina much 

 larger than those of the inner. 



34. Ceuthophilus latisulcus, nov. sp. 



f CeuthophUus uhleri, Brunner, Monog. der Stenopel. und Gryll., L888, 

 308, pi. VII., fig. 33 b. 



General color, light brownish or clay yellow, irregularly mottled with 

 fuscous, especially on the pronotum and abdomen ; the female somewhat 

 darker. The anterior femora much longer than the pronotum with two 

 sub-equal spines near the apex of the lower front carina. The interme- 

 diate femora with three spines on each of the lower carina?. The hind 

 femora not so broad as in the preceding, the outer lower carina much less 

 prominent ; the upper half of the exterior face very scabrous, with small 

 projections. The inferior sulcus very broad and shallow, about twice the 

 breadth and one-half the depth of that of C. uhleri ; the sides not meet- 

 ing in an angle as there, but the upper surface of the sulcus flat. The 

 outer carina with 8 sub-equal spines borne at equal distances apart on 

 the apical half ; the middle two slightly the larger but much less strong 

 than the corresponding one of C. uhleri. The inner carina armed with 

 20 or more very small teeth. The hind tibise with a very slight curve 

 just below the base ; a little longer than the corresponding femora. 



Measurements : Male— Length of body, 15 mm.; of pronotum, 5.1 

 m.m. ; of front femora, 7 mm. ; of hind femora, 17.5 mm. ; of hind tibiae, 

 18.5 mm. 



From C. uhleri, which it most resembles, this species may at once be 

 known by the longer anterior femora, the much broader and shallower 

 sulcus of the hind femora, as well as by the difference in size and arrange- 

 ment of the teeth upon the latter. The adult male is larger with longer 

 hind limbs than that of uhleri, though the males of both these species 

 are much more robust when mature than those of maculatus and lapidi- 

 colus which have come under my notice. 



C. Brunner, in his Monographie, has described a species of Ceuthophdus 

 under the name of uhleri, Scudder, which may be the same insect as 

 latisulcus. As shown above, however, the name of uhleri belongs to the 

 preceding species. Brunner's measurement of his so-called uhleri, as well 

 as the number of spines on the femora, differ from those given above. 



Latisulcus is described from two males and a female taken in Vigo coun- 

 ty, August 25, from beneath a log on a sandy hillside. 



