290 NYCTERIBTD^. 



appear like a tube ; but if cut off they will separate and show the 

 siphuncle, as fine as a hair, between them." 



1. ovinus, L. Fn. 1923 (1761) ; F. ; Schr. ; Friscli ; Va. ; Nitzsch ; 

 Fal. ; Latr. ; Leach ; Meig. ; Mcq. ; Zett.—aptem, L. I. Westrogoth. 

 Fulvus, capite subtus albido, abdomiue fcrrugineo, unguibus uigris. 

 Long. 3 Hn. 



Tawny. Head whitish beneath. Eyes brown. Abdomen ferru- 

 ginous. Ungues black. 



Generally distributed. (E. S. I.) 



Family XXXI. NYCTERIBID^. 



NycTERiBiDiE, Leach, Eprobosc. Ins. (1815). Notvstomata, Leach, 

 Suppl. Enc. Brit. Nycterihiida, Westw. PJdJuromyii, Latr. ; Mcq. 

 Nyckribiites, Blanch. Biptera p., Latr. 



Caput reversum, et subversum, supra mesouotum. 



Head turned back, and npude doicu, over the mesofioimn. 



Genus I. NYCTERIBIA. 



Nycteribia, Latr. Pre'c. Car. Gen. (1795) ; F. S. A. ; Fal. ; Meig. ; 

 Mont. ; Leach ; Curt. ; Westw. ; Mcq. ; Zett. Pedicidm p., L. Fn. 

 Jcarus p., F. Sp. Hippobosca p., L. ; F. Ent. Syst. ; Schr. ; Voigt. 

 Celerlpes, Mont. Fhthiridium, Herm. ; Oilers ; Leach. 



Caput parvum, obconicura, antice setosum et emarginatum. Oculi 

 tuberculis paucis, aut simplices. Os basi tumidum, antice styliforme. 

 Antennae biarticulatee, brevissimae, approximatse, porrectaj, paralleke ; 

 articulus secundus primo longior, subtrigonus, externe rotundatus. 

 Thorax brevi-ovatus, supra elevato-arcolatus,' subtus planus, linea 

 media longitudinali, appendice utrinque pectinata. Pedes crassi, 

 longissimi, setosi ; coxai antic* sat longaj ; trochanteres brevissimi ; 

 femora valida, compressa, transverse impressa ; tibiaj graciliorcs, basi 

 quasi triarticulata3 ; tarsi articulo primo longissimo subannulato, 

 secundo, tertio, quartoque brevissimis, quinto longiore; onychia duo 

 maf^na ; ungues duo validi, basi subtus dilatati. Mas. Abdomen 

 5- aut 6-articulatuui. Fwm. Abdomen quasi biarticulatum. 

 Body crustaceous ; thorax above and alxlomen leathery. Head small, 



obcouical, furnished with set.e, and slightly emarginate in front above, 



more deeply so beneath. Eyes composed of a few tubercles, or sinqjlc. 



Mouth with a large basal bulb-like organ, ternunating in an elongated. 



