290 SEEETCOENIA. 



4. Semiotus lafertei. (Tab. XII. figg. 22 ; 22a, fifth ventral segment, $ .) 

 V Semiotus lafertei, Cand. Monogr. Elat. i. p. 313 l ; Revis. Elat. p. 177 2 . 



Hab. Mexico l 2 (coll Janson, ex LafertS), Cosamaloapan, Cordova, and Tuxtla in 

 Vera Cruz (Salle) ; Guatemala, Coban, Senahu, Panima, and Purula in Vera Paz 

 (Champion) ; Nicaragua, Chontales (Belt, E. M. Janson, Richardson) ; Costa Pica (Van 

 Patten), Cache (Sogers) ; Panama (coll. Janson), Bugaba, Volcan de Chiriqui (Champion), 

 Chiriqui (Bibbe). — Colombia. 



This insect is abundant in Nicaragua and the State of Panama ; in Guatemala and 

 Mexico it appears to be confined to the Atlantic slope. S. lafertei is, no doubt, a 

 variety of the S.-American S, affinis, Guerin (=candezei, Kirsch), from which it differs 

 in having the marginal spot on the thorax obliterated above, the sutural stripe not 

 extending to the base, and the cavity surrounding the scutellum not black. The 

 thoracic vittee are sometimes interrupted. Candeze in his ' Catalogue ' (1891), p. 41, 

 nota, remarks that JS. candezei, Kirsch, S. lafertei, Cand., and 8. affinis, Guer., 

 may be regarded as local forms of 8. intermedins, Herbst. I have examined 107 

 specimens of 8. lafertei from within our limits, four only of which are males. The 

 females have two very large, oval, piliferous fovea? on the fifth ventral segment, 

 extending from about the basal fourth to near the apex, the apex itself being feebly 

 emarginate. A specimen from Tuxtla is figured. 



V 



5. Semiotus dohrni. (Tab. XIII. figg. 1, $ ; 2, $ , var.) 

 Semiotus dohrni, Cand. Ann. Soc. Ent. Belg. 1889, p. 80 (Elat. Nouv. iv. p. 14) \ 



Hab. Nicaeagua, Chontales (Belt); Panama 1 (coll. Janson), Chiriqui (Trbtsch). 



Var. The head with a patch on the vertex, the prothorax with a broad median vitta extending from the base 

 almost to the apex and a small spot on the sides before the middle (extending to the pleurae beneath), the 

 scutellum and the cavity surrounding it, and the elytra with the suture from the base to the apex, two 

 vittse on the disc (extending along the fourth and sixth interspaces from near the base to near the apex, 

 and narrowing behind), and a marginal stripe (extending from opposite the hind coxae to the apex), black ; 

 a broad stripe down either side of the pro-, meso-, and metasternum, and first four ventral segments, 

 also black. 



Hab. Guatemala, Cerro Zunil (Champion). 



Two specimens from the State of Panama have been examined by Dr. Candeze. The 

 three examples from Guatemala differ from them in having the black markings much 

 more extended, both above and beneath, and they also have a black marginal spot on 

 the thorax. The single specimen from Chontales resembles those from Panama. All 

 of them are of the female sex. They have the fifth ventral segment unimpressed, with 

 the apex sub truncate. We figure two specimens — one from Chiriqui, and one of the 

 variety from Guatemala. 



