88 



FAMILY II. CABABIDiE. 



XXII. AjSJOphtbalmus Sturm, 1844. (Gr., " without eyes.") 



Small, pale brown, eyeless beetles found in eaves. Eight species 

 are known from the United States, two of which were described 

 from Wyandotte Cave. Indiana. For literature see : 



Horn. — "Synoptic Table" in Trans. Amer. Ent. Soc, X 5 1883, 

 270; also in Bull. Brook. Ent. Soc, Y, 1882, 48. 



IIS (489). AxoPHiHALiirs tewis Horn. Trans. Amer. Ent. 



Soc., III. 1871, 327 ; Geol. Surv. Ind. 1872, 

 %^f^ 179. 



%j Elongate, slender. Pale brownish-yellow, shining. Head 



oval, front with two curved impressed lines. Thorax broader 

 than head, slightly longer than wide ; sides curved in front. 

 ¥^l&J^i sinuate behind, median line distinctly impressed: hind 

 % angles rectangular. , acute. Elytra elongate-oval, two-thirds 

 I \ longer than broad, surface finely alutaceous ; striae faint but 

 evident, with three bristle-bearing punctures along the third. 

 (Sihbi) Length 4.5-6 mm. (Fig. 56.) 



Caves of Monroe, Lawrence and Crawford counties ; frequent in 

 Wyandotte. April 15-Septeniber 20. They occur only in the re- 

 mote parts of the caves, where they may be found crawling rapidly 

 over mud, sand or rocks in damp localities. Like other Carabids. 

 these small blind beetles are supposed to be carnivorous. In Wyan- 

 dotte specimens of mites, spiders, springtails and harvestmen were 

 taken in the same locality as the beetles, and probably furnish the 

 latter a scanty supply of food. 



119 (491). A^ophthalmvs eremtta Horn, Trans. Amer. Ent. Soc.. III. 

 1S71. 32S; Geol. Surv. Ind.. 1872, 180. 

 Of the same color as tenuis and resembling that species but broader. 

 Thorax wider than long and wider than head : hind angles less prominent. 

 Elytra more distinctly alutaceous, with scarcely any traces of striae, the 

 surface subopaoue. Length 5 mm. 



Very rare; originally described from a single male specimen 

 taken in Wyandotte Cave, Crawford County. The type is in the 

 Horn collection at the Philadelphia Academy of Natural Sciences. 



Tribe VI. PTEROSTICHENT. 



Beetles of medium or large size, having the antenna? arising from 

 beneath a distinct frontal ridge, the three basal joints glabrous: 

 mandibles without a bristle-bearing puncture in the outer groove: 

 mentum broad, usually deeply emarginate and toothed. Thorax 

 with at least one bristle-bearing puncture at side and one at hind 

 angle. Body not pedunculate, scutellum distinct. Elytra narrowly 

 inflexed, margin strongly interrupted behind the middle and with 



