DESCRIPTIONS OF NEW SPECIES. 93 



MALTIIODES Kiksk.swktter. 



333. M. fuligiiiosus. Elongatus,fuscus,tenuiter cinereo-pubescens, 

 thorace latitucline breviore, antrorsuni paulo latiore, marginato, angulifl 

 anticis rotundatis, apice utrinque oblique truncato, basi recto; elytris 

 rugosis, longiusculis ; pedibus pallidioribus, autennis basi testaceis, 

 articulis 2 et 3 sequalibus. Long. -17. 



Mas, segmento dorsali penultimo postice utrinque Binuato, angulis posticis 

 prominulis ; ultimo prolongate, angusto apice acute emarginato, supra 

 longitudinaliter concavo ; penultimo ventrali late profundi- emarginato; 

 ultimo pallidiore elongate, vage canalicnlato, postice in cornua duo 

 cylindrica ascendentia, et divergentia producto. 



Femina, segmento ventrali 6to fisso, lobis rotundatis. 



Lake Superior; three specimens. A rather large species, easily 



known by the sexual characters : the last dorsal segment (if the 

 male is much prolonged, narrow, and concave above, emarginate 

 at tip, with the lobes rounded; the penultimate ventral segment 

 is very deeply and broadly emarginate ; the last ventral prolonged, 

 broadly canaliculate, produced behind into two cylindrical horns, 

 ascending so as to pass each side of the prolonged last dorsal 

 segment. 



The females of different species of this genus resemble each 

 other in such manner that, as already observed by Kiesenwetter, 

 it is very difficult to distinguish them: the sexual characters of 

 the male are very extraordinary, and very easily recognized in 

 each species. 



334. m. spado. Nigro-fuscus, tenniter cinereo-pubescens, capit.> tho- 

 race latiore, ore rufo, thorace latitudine dnplo breviore, undique tenniter 



marginato, lateribus rectis angulis omnibus rotundatis, elytris rugosis, 

 ad medium abdominis abbreviatis. Long. '09 — -13. 



Mas, segmento dorsali ultimo apice rotundato ; ventrali penultimo late 

 profunde emarginato, ultimo conico, baud producto, apice parum emar- 

 ginato ; antennis corpore brevioribus. 



Femina, segmento ventrali penultimo late emarginato. 



Variat capite obscure rufo, fascia pone oculoa nigrioante. 



Pennsylvania; five specimens. Theelytra aresomewhal Bhorter 



than in the other species, being only one-half the length of the 

 abdomen; the 2d joint of the antennie is about equal to the Sd in 

 the female, and a little shorter in the male. 



The penultimate ventral Begmenl is feebly emarginate in the 

 female, but deeply semicircular!}- emarginate in the male; the last 



