480 SEEEICOENIA. 



rugose. Beneath thickly punctured. Tarsi with the second and third joints rather slender and 

 compressed, the fourth small. 

 Length 8, breadth 2 millim. ( <$ .) 



Hah. Mexico, Ciudad in Durango 8100 feet (Forrer). 



One male example. In this insect the second and third joints of the tarsi are very 

 little stouter than the fourth, and the front in the centre is slightly raised above the 

 anterior margin of the head ; the last-mentioned character is common to various North- 

 American members of the genus, and the form of the tarsi is very similar to that of 

 most of the Central-American species. It approaches Limonius in some respects, but 

 seems better placed here. 



3. Hemicrepidius bivittatus. (Tab. XXI. fig. 6, $ .) 



Elongate, rather narrow, shining ; rufo-castaneous, the head (the sides of the front excepted), antennae, and 

 scutellum, two vittae on the prothorax — not reaching the apex, narrowing posteriorly, and confluent in 

 front and behind, — the prosternum (except in front), and the sides of the metasternum, black, the femora 

 infuscate ; finely and very sparsely pubescent, the pubescence fusco-cinereous above and cinereous beneath. 

 Head very sparsely punctate, depressed in front ; antennae scarcely reaching the hind angles of the pro- 

 thorax, joint 3 considerably longer than 2. Prothorax very much longer than broad, gradually narrowing 

 from the middle forwards and sinuate at the sides behind ; the hind angles greatly produced, narrow, and 

 strongly divergent, carinate; the surface finely and somewhat sparsely punctate, canaliculate behind. 

 Scutellum rather convex, almost smooth. Elytra two and one-half times the length of the prothorax, and 

 very much wider than it, narrowing from about the basal third, truncate at the apex ; punctate-striate, 

 the striae fine, the interstices rather convex and very sparsely punctured. Beneath very sparsely and 

 finely, the prosternum more coarsely and more closely, punctate. 



Length 11, breadth 2| millim. ( $ .) 



Hah. Costa Rica, Volcan de Irazu 6000 feet (Rogers). 



One female example. This insect is not closely allied to any of the other species of 

 the genus. The thorax is very elongate and much narrower than the elytra, with 

 greatly produced, narrow, carinate hind angles. The body is very sparsely and finely 

 pubescent, and rufo-castaneous in colour, with the head and two vittse on the thorax 

 black. 



4. Hemicrepidius instabilis. (Tab. XXI. figg. 7, <? , var. ; 8, var. leuco- 

 stigma, $ .) 



Asaphes instabilis, Cand. Monogr. Elat. iv. p. 218 \ 

 $ . Asaphes leucostigma, Cand. loc. cit. p. 220 2 . 



Hob. Mexico 1 2 , Puebla, Tuxtla, Cordova (Salle), Cerro de Plumas, Jalapa (Hoge), 

 Orizaba (coll. Janson\ Fortin in Vera Cruz (H H. Smith) ; Guatemala (Salle), Senahu 

 and Sinanja in Vera Paz (Champion), Coban in Vera Paz (Conradt) ; Costa Rica, 

 Volcan de Irazu (Rogers) ; Panama, Volcan de Chiriqui (Champion). 



With the long series of specimens before me from the above localities I am unable 

 to separate H. leucostigma from H. instabilis, the obliteration of the elytral strise in 



