COLEOPTERA — TENEBRIONINA. 191 



Prostenus californicus Horn. robustus Cas. 



Stenochidius cyanescens (Lee.) Xystropus californicus 



gracilis Lee. opacus — Cistela. 



MELOINA 



MELOID/E. 



The blister beetles are used in medicine. They feed on the Coliage of 

 plants and are sometimes quite injurious. The young larvae are parasitic on 

 bees and are called triungulins because of their trident-shaped claws. 'I'hey 

 have hypermetamorphoses. 



SYNOPSIS OP GENERA. 



Lytta: antennae with apical joints thickened. Gnathium: mandibles pro- 

 longed beyond labrum. 



Nemognatha: mandibles prolonged beyond labrum. Zonlttis outer Io])e of 

 maxillae not prolonged. 



Epicauta: lower portion of claws equal to upper. Meloe: elytra short. 

 Marrcbasis: second joint of antennae long. 



Calospasta. Cysteodemus: elytra inflated. iVIegetra: elytra divergent from 

 scutellum. Porespasta: elytra separating at tip. Phodaga: vertex elevated 

 Tegrcdera: body glabrous. 



Calospasta elegans (Lee.) nitidicollis — Lytta. 



fuller! Horn. oblita — Epicauta. 



mirabilis Horn. puncticollis — Epicauta. 



moesta Horn. purpurescens — Lytta. 



nemognathoides Horn. rathvini — Lytta. 



perpulchra Horn. refulgens — Lytta. 



Cantharis aeneipennis — Lytta. smaragdula — Lytta stygica. 



aairiculata — Lytta. sphaericollis — Lytta. 



chalybeata — Lytta. stolida — Lytta. 



childii — Lytta. stygica — Lytta. 



choris — Lytta. tenebrosa — Lytta. 



compressicornis — Lytta. vulnerata — Lytta. 



crotchii — Lytta. Cysteodermus armatus Lee. 



cyanipennis — Lytta. v.(izlizeni Lee. 



difficilis — Lytta. Epicauta alphonsii Horn. 



dolorosa — Lytta stygica. elegans — Calospasta. 



lunerea — Lytta. fallax Horn. 



incommoda — Lytta. maculata Say. 



infidelis — Lytta. maura (Lee.) 



insperata — Lytta. oblita (Lee.) 



lugens — Lytta. puncticollis Man.) 



lugubris — Lytta. straba Horn. 



magister — Lytta. Gnathium nitidum Hron. 



melEena (Arizona.) Lytta aeneipennis Lee. 



mcerens — Lytta. atriventris — Macrobasis. 



molesta — Lytta. auriculata Horn. 



morosa — Lytta. chalybeata (Gem.) 



morosa — Lytta, childii Lee. 



nigripilis — Lytta. choris (Fall). 



