HEMIPTEBA HETEROPTERA PENTATOMIDJB. 443 



8. PROCYDNTS MAMII.I.ANUS 



I 'I. 7. Fi-. !'.. 

 Cydniuf mamiliamu Soodd., Boll. U. 8. Oeol. Geogr. 801 !\'. 770 1878 



The body is broad .-iiiil convex ill 1'nnil, \vitli a rapidly taperin;r ahdo- 



men, scarcely ;it all rounded, even at the tip. The head, as seen tV 



above, is nearly circular. >haped niiich a> in Steiiopelta piinctiilata from tin- 

 same heils. hut more broadly ami regularly rounded in front, with tin- cen- 

 tral lobe broad, and defined by rather stronirlv impre>--d furrow-: the 

 ocelli are lar^e, situated just behind the anterior extension of the thoracic 

 loln-s: the surface of the head is rn^nlose. Thorax more than twice as 

 broad as the head, and more than half as \nn<r a^ain ; the sides rounded, 

 bein^- broadest at the posterior horde]-, narrowing in front and roundly 

 excised at the anterior angles ; front border very deeply hollowed behind 

 the head, leaving- prominent front lobes on either side, nearlv as larj_ r e as 

 the bead and strongly mamillate ; hind border nearly straight. The sur- 

 face is minutely granulate, besides which there is a transverse belt of rather 

 lar^v and distant punctures midwav between the mamillatioiis and the hind 

 border. The scutellnm is very lar^e. rounded-triangulai', broader than 

 long, and granulate like the thorax, (,'oriumof tetrmina, which occnpie- 

 t heir greater portion, obscurely and distantly punctulate ; abdomen trian- 

 gular, the apex hhintlv pointed 



Length of body, .;""": of head. US' ..... : (1 f either lateral half of thorax, 

 L.35 ...... ; breadth <>l' head. I""": of thorax, 2.4""". 



(ireen River. Wyoming, (hie specimen, No. .'I'.i i F. (' A liichanUon i. 

 Florissant, Colorado. Two specimen^, Nos. r.i-j'i. 



3. NEGROCVDXt'S u-,.,,. nov. (vexpot, ( 'ydnns. noni. gen.). 



The species of this have the same oval form as those ,,f the preceding 

 L r '-niis, and differ from them in little but the relation between the head and 

 thorax, the latter \ cry broadly and shallowlv emar^inate in trout, .ami the 

 former consequent!} embraced hv the thorax to a much smaller decree. 

 The head is rounded, always broader, generally much broader, than loiiL r , 

 the eyes and ocelli a- in I'rocvdnns; it is, however, snnk'-n to some extent 

 in the thorax, and its curves and those of the sides of the thorax are >nch 

 as hardl\ to destroy the ell'ect of a -in^le parabolic curve to the front end of 



