TRAVAUX INÉDITS. 153 



FAMILIA CRASPEDOSOMIDvE. 



Craspedosomidœ, Jones. — Lysiopetalidœ, Newp. — Chor- 

 deumiden, Koch. — Lysiopetalidœ, Wood. 



Tribus CRASPEDOSOMII . 

 G. Craspedosoma, Leach. 



I. Lamina basalis labii transverse divisa. — (Craspedosoma). 



16. C. Mexicanum. — Cylindricum, postice compressum, 

 fuscum ; antennarum articulis 2-4 subaequalibus, 5° lon- 

 giore, 6°,7°minutis; segmentis postice csesio-marginatis, 

 utrinque tuberculo piligero laterali et superne granulis 

 piligeris 2 pallide areolatis instructis; segmento prseanali 

 laevi, compresso, apice truncato, postice spinulis armato, 

 valvis analibus sequilongo. $. Long. 22 mill. , lat. 

 2-5 mill. — Mexico, Cordiliera orientalis. 



II. Lamina basalis labii indivisa. — Chordeuma, Koch. 



G. Spirobolus, Erandt. 



I. Corporis primi segmenti lobi lateralis late rotundati. 



1. Corpus gracile, elongatum, apice nec compresso nec 



attenuato, hemispheroidali segmento prœanali cin- 

 gulum transversum efficiente. — Sp. loltecus , 

 Sauss. 



2. Corpus minus gracile , apice phts minusve com- 



presso; segmento prœanali superne triangulari. 



A. Segmenlum prœanale valvas anales superans. — 



Sp. arboreus, Sauss. 



B. Segmentum prœanale valvas anales haud vel vix 



superans. — Sp. aztecus, Sauss. 



