CHMNOBIA.— LISTKOCHELUS. 169 



posticarum calcaribus dissimilibus, interiore recto acuto, exteriore curvato latiore, apice oblique truncato. 



Antennae 10-articulatae ; clava J elongata. 

 5 . Pygidium nee tuberculatum nee excavatum, apice sublobatum, marginibus sinuatis ibique supra impunc- 



tatum. Antennarum clava elongata, gracilis, articulis 3°-7 m conjunctis longiore. 

 Long. 12-14 millim. 



Hab. Nicaragua, Chontales (Janson)-, Costa Eica (Van Patten), Volcan de Irazu 



(Rogers). 



Four examples. 



CHIRODINES. 



Gen. CUcenobice et Phytalo affinis. S • Corpus elongato-angustatum, calvum. Caput sicut in Chlcenobia ; oculi 

 magni. Labrum profunde arcuato-excavatum, longe setosum. Antennae 10-articulatae. Thorax toto 

 marginatus, postice sinuatim leviter angustatus, angulis posticis acutis. Pedes elongati ; tarsi robuste 

 filiformes, subtus sparsim breviter setosi ; unguibus 4 anteriorum simplicibus basi tantum late dentatis, 

 2 posteriorum profundissime fissis, dentibus gracilibus subsequalibus. 



The simple claws of the four anterior tarsi distinguish this genus from both Chlce- 

 nobia and Phytalus ; the absence of dense pubescence from the soles of the tarsi (in the 

 male) further distinguishes it from Chlcenobia, to which it is most nearly allied by the 

 form of the head and thorax and the long and stout filiform tarsi. The spurs of the 

 hind tibiae are both freely articulated, both long and slender, but the lower shorter 

 than the upper. 



l. Chirodines zunilensis. (Tab. X. fig. 2, 4 .) 



Elongatus, subcylindricus, glaber, sordide flavo-testaceus, supra sat dense sequaliter punctulatus ; clypeo late 

 rotundato, margine anteriore reflexo, medio sinuato. 



c? . Pygidium, prascipue apice, convexum, sparsissime punctatum, apice sulcato-marginatum. Tenter glaber, 

 lateribus punctulatis ; segmentum 5 m medio transverse sulcatum ; 6 m magnum, laeve, medio depressum et 

 longitudinaliter sulcatum. Tarsi anteriores valde elongati, articulis leviter incrassatis. 



Long. 15 millim. 



Hab. Guatemala, Cerro Zunil 4000 to 5000 feet (Champion). 



Two male examples. 



LISTKOCHELUS. 



Listrochelus, Blanchard, Cat. Coll. Ent. i. p. 141 (1850) ; Lacordaire, Gen. Coll. iii. p. 28 (1856) ; 

 Leconte, Journ. Acad. Nat. Sc. Phil. 2nd ser. iii. p. 262 (1856) ; Horn, Trans. Am. Ent. Soc. 

 vii. p. 138 (1878). 



A genus characteristic of the insect fauna of the South-western States of America 

 and the northern part of Mexico. Fourteen species have been described, nearly all 

 of which are from the United States. 



l. Listrochelus laportaei. 



Listrochelus laportcei, Blanch. Cat. Coll. Ent. i. p. 141 l . 



Hab. Mexico \ Jalapa, Las Vigas (Hbge). 

 biol. CENTE.-AMER., Coleopt., Vol. II. Pt. 2, January 1888. ZZ 



