148 LAMELLICOENIA. 



1. Isonychus ocellatus. (Tab. IX. %g. 10, 11, 12, 13.) 



Isonychus ocellatus, Burm. Handb. der Ent. iv. 2, p. 46 \ 



cj . Ventris segraentum 5 m medio late deplanatum, subexeavatum, subtiliter corrugatum, nudum ; segmenti 6 l 



apice cum pygidii apice elevato interdum verticali. 

 5 . Ventris segmentum 6 m (et o 1 apex) simplex, nudum, rufum. 

 Long. 10-13 millim. 



Hab. Mexico \ Puebla, Capulalpam, Toxpam, Juquila, Oaxaca (Salle), Jalapa, 

 Coatepec (Edge) ; Guatemala, Volcan de Fuego 6500 feet (Champion). 



The head is generally dark, tending to brassy-black, and punctured ; the rest of the 

 integument castaneous or brown, clothed with ashy or dingy-ashy pile, and presenting 

 a very variable dark brown design on the elytra. Burmeister describes only one state, 

 which may be fairly taken as typical, the elytra having twelve large brown rounded 

 spots, the two central ones of which are ring-shaped, or have a pale centre. The chief 

 variations from this typical pattern are the following :■ — ■ 



1. The fuscous spots all ocellated; pile longer and coarser. — Puebla, Jalapa. (Tab. IX. fig. 11.) 



2. The same reduced to thread-lite rings. — Coatepec. 



3. Spots coalescing to form two broad oblique belts. — Jalapa, Toxpam. (Tab. IX. fig. 12.) 



4. Pile finer, leaving the strise (partly geminated) visible; the. brown spots paler and more rufous 



in colour, generally coalescing in two belts. — Capulalpam, Juquila. 



5. Var. /. piperitus. Spots much reduced in number and size, or entirely absent ; elytra sprinkled 



throughout with minute blackish spots. — Juquila, Oaxaca, Toxpam, Jalapa, Coatepec. 

 (Tab. IX. fig. 13.) 



6. Clothed with longer, light ashy pile; elytra with faint traces of two oblique dusky belts. — 



Guatemala. 

 Var. 5 is more numerously represented and more definite than the others, thus meriting a distinc- 

 tive name. 



2. Isonychus pictus. (Tab. IX. fig. 14, 2 .) 



Isonychus pictus, Sharp, Journ. Linn. Soc, Zool. xiii. p. 131 \ 



Hab. Nicaeagua, Chontales (Belt 1 ); Costa Rica (Van Patten). 

 A Nicaraguan specimen is figured. 



3. Isonychus hirsutus. 



Oblongo-ovatus, nigro-seneus ; antennis (clava nigra excepta), pygidio anoque obscure rufls, undique pilis 

 elongatis erectis fulvis pubeque recumbente flavescente, vestitus ; elytris utrinque fascia obliqua lata ante 

 medium, macula transversa communi post medium plagisque vagis apicalibus, nigris recumbenti-pilosis. 

 Long. 13-14 millim. 

 <$ . Ventris segmentum 5 m medio late depresso-planatum et crebre rugoso-punctatum, 6° (basi profunde 



transversim sulcato) pygidioque apice elevatis ; tibiae posticae ecalcaratae ; intermedise bicalcaratse. 

 2 . Ventris segmenta 5 m apice et 6 m lsevissima, rufescentia, 5 m valde elongatum. 



Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 



Allied to I. pictus and I, crinitics, and apparently still more closely to i". principalis, 



