(iO J. L. LECONTE, M. I). 



iHAIiTHIXUS Latr. 

 Tlic lu'iid is laruv in tliis ucmi.s, iiaiTowed Itehind the eyes a.s in 

 PoJahrus. wliicli it (iliAiuusly rcjiresiMits in tliis LiTDiip ; the antennfe 

 slt'Uilri-. with tile sccdud jtiint nut shorter fliaii the t'dllowini:' ones, soine- 

 wliat (hstant from the eyes, which are lateral and moderately prominent. 

 Last joint of palpi oval, acutely pointed at tip. Elytra three-fourths as 

 long as the abdomen, punctured in rows in our species. Last dorsal 

 segment of % not lobed but rounded ; penultimate ventral emarginate, 

 last ventral oval, large and convex, as in Chaulingnafhus ; 9 with last 

 ventral cmarginate at tip. 



Piceous, protliorax smootli and seutel ferruginous, elytra entirely black, an- 

 terior half of head, base of antennsie and front legs yellow. Length 3 nam. ; 

 Tex.: (Belfrage) 1. atripennis n. sp. 



Picciiu^ or testaceous, prothorax jiuuctureil, sides of jirotliorax and tip of elytra 

 yellow. L(^iigth o rniii. : Va.; (ia 2. occipitali!^ Lee. 



The paler specimens are difficillii Lee. ; this species is very closely 

 allied to, and perhaps not difFtn-ent from the P]uropean faaciatus. 



IVIAI^TIIOIIEfii Kiesenw. 

 As above mentioned, the insects of this genus have not ])een very 

 thoroughly collected, and from the meagre contents of the collections 

 of Dr. Horn and myself, not exceeding ninety examples, I have con- 

 structed tho following table of the species which seem to be indicated 

 in our fauna. The characters are derived from the % % . 



I^ast abdominal segments normal in both sexes A. 



Last abdominal segments % inflated and variously modified B. 



Last abdominal segments % with long complex processes C. 



A. 



Picoous tinged with testaceous, prothorax nearly twice as wide as long, sides 

 finely margined, more strongly so near and at the sides of the base; elytra 

 two-thirds the length of the wings; % head wider than prothorax, eyes sinall, 

 prominent, antennte extending behind the elytra, as long as the wings, second 

 joint e(|ual to third, penultimate veiiti-al segment emarginate, last segment tri- 

 angular, rounded at tip. Length 2—.'; mm. : Pa.: Ga 1. spado Lee. 



B. 



Piceous head blackish; prothorax twice as wide as long, sides parallel and 

 strongly margined, subsinuate and wider at the front angles which are rounded ; 

 elytra three-fourths as long as the wings; % head wider than the prothorax, eyes 

 moderately large, prominent, antenna3 extending to tip of elytra, second joint 

 equal to third, penultimate ventral segment large and more convex, emai-ginate, 

 last segment ])romineu(, obtusely i-ounded at tip, accessory jii-ocesses short, neither 

 sltMidcr nor prominent. Longtli :'. mm.: Cal 2. Isilicollis Tjcc 



t)f tlir sanii' c.ilor ns tiie preceding. .•iiilcuii:i- ami alxluium sunielimcs ])artly 



b-'sta( us: pi-nlh.>nix •-h.-ilf widrr tiian long, si.lcs iiarrowly margined, <-(in- 



cavely (ransvci-sely impressed near fb<' iVoiit angles wliieb are round<'d; elytra 

 twM-lliirds as long as tile wings ; % liea<l widi'i- tlian ] in .(Ik. rax, eyes very large. 



