40 Mrmoim of thf liulunt Munrum. (V<»l. VII, 



bi-ad witbout nml iK'hiiul ttic> ridgOM ; in front of tlii.s j^ruovc and between tbc ridges it i» 

 matt. 



Tbe mnrginal grnovf.s of the iimnntuni an- nmri" finely and fvcnly punrturtHi tbun 

 in P. jtiinqurconnitus. Tbr coariM? pum-turc.H on tbe Hides of the pronotuni nr<' Icm 

 nunuTouH tban in tbat hptries, and a pair <if punctiintl snirs are* evident ; tbere are a few 

 inar.M* piuutures un tin- dornid Mirfact' as well as at tiu' sides. 



The scutellum is witbout punctures. Tbe mesotboracic e])istcrna, uieHosternum 

 and alHlominnl sterna resemble tbo.se of /'. iiiiiitiiuecomttlus ; the meta.sternum is more 

 e.xtensively punetureil in tbe posterior intermediate areas. Tbe punt-tures in the gnK>ve» 

 i>f tbe elytra, and the spines on tb«' miibllc and posterior tibiae, are not cpiite so 

 pronounced as in iliit >|»ecies. 



Chondrocephalus purulensis il'.itr-). 

 Fig. VI, ;i. ,. 1... 

 Popiliiit jninilnt»i». Bate*. 1886, p. 13. 



One specimen from (luatemala, 22'8 ram. long. 



The anterior margin of tbe labrum is slightly concave. an<l tin' .-.ides are slightly 

 convergent behind. Tbere are no inner tubercles. Tbe frontal ridges, which are flattened 

 above, are straight and meet in a more obtuse angle than in either «»f the preceding species ; 

 they and the clj'peiis are glo.ssy, the whole of the triangidar area bouniled by them being 

 matt. In other respects the head resembles that of C. corditjcr. as do also the antennae 

 and mnn«libles. 



The pronotum re.sembles that of C. cordiyrr in form, but tbe scars are more pronouncc4l 



and there are no coarse punctures on the general surface, either at the sides or nearer tbe 



i ' iitelbim bears a group of pun«tures on either side of tbe miihile line ; in 



the niesot borax re.sembles that of the two prece«liiig species. The 



metastemum bears a few punctures in the inner angles only of the posteri«»r intermediate 



ar«as. The alxlominal sterna, elytra and legs resemble tbitse of C. cordit/rr. 



Chondrocephalus granulifrons (Bates). 

 Fig. W \, p. I".. 

 PopiUu* granuUfTom. Botes. \i>S(\. p. 12. 

 Numerous specimens from (tuatemala, 26- 2 -32- 2 nmi. long. 



C. grannUfronfi differs from C. purxtlensis \x\ having the frontal ridges (which meet in a 

 right angle) less flattened above, with the inner tubercles more or less imperfectly developed 

 and .sometimes united. The small area behind and between the inner tubenles is glossy, 

 that between the inner and outer tubercles matt, ami the clypetis more or le.ss rough an«l 

 glossy. The puncturing oi\ the .scutellum is variable. Tli" -iiii.es on the middle and hind 

 tibiae are stronger. 



Genus VINDEX. Kaup. 1871. p. 78. 

 Type, Patsnlus aijnofcenduf, I'crcheron. 1841. p. .::. pi. l.x.xviii, fig. 2. 



