CHRYSOBOTHKIS. 39 



at the extreme base, and a slight shallow one between the first and second bands ; the 

 punctures are not very close together on the disc, but are closer and stronger towards 

 the sides ; the first fascia does not reach the margin nor the suture ; and the second 

 and third fasciae nearly touch the margin and suture, and are united by a fine line 

 running close to the latter (in one example the three bands are united by a line). The 

 underside is slaty blue-black ; the apical segment is arcuately and broadly emarginate, 

 with the angles spiniform (Tab. III. fig. 8 a). 



The example from Jalapa has the basal fascia reduced to a transverse spot. 



15. Chrysobothris trisignata. (Tab. ill. fig. 9.) 



Elongata, convexa, crebre punctata, aureo-viridis, splendens ; thoraee parallelo ; singulo elytro macula ante 

 medium, fascia pone medium alteraque ante apicem, cyaneo-nigris ; fronte corporeque subtus aureo- 

 cupreis. 



Long. 5 lin. 



Hab. Mexico, Sierra de Mazamithl in Guanajuato (Salle), Almolonga, Chilpancingo 

 in Guerrero (Hoge). 



This insect somewhat resembles C. melazona, but has the thorax parallel at the sides, 

 a character at once separating it from that species ; the punctuation is, moreover, 

 closer, and stronger and more crowded at the sides of the elytra. The forehead has 

 a short, slightly prominent ridge on the vertex. The lateral margins of the thorax are 

 coppery. The elytra are without costae, but there is a slight longitudinal impression 

 at the suture posteriorly ; there is a deep fovea at the base, and there is a very shallow 

 one on the disc ; the punctures near the suture are fine and separated, but towards 

 the sides and apex they become stronger and closer, so that at the margins the surface 

 is rather rugose. The apical segment of the abdomen of the male is broadly but very 

 slightly sinuate, with the angles very acute (Tab. III. fig. 9 a); in the female it is bi- 

 sinuate (fig. 9 b). 



16. Chrysobothris socialis. (Tab. III. fig. 10.) 



Aureo-viridis, minus nitida, confertissime punctata ; singulo elytro macula ante medium, fascia pone medium 

 (medio interrupta) alteraque subapicali, cyaneo-nigris ; fronte corporeque subtus asneo-cupreis, confertim 

 punctatis. 



Long. 6 lin. 



Hab. Mexico, Ventanas in Durango 2000 feet (Forrer). 



This species is very close to the preceding, but is distinguished by its surface being 

 somewhat dull, owing to the stronger and more dense punctuation. The punctures on 

 the disc of the thorax frequently touch each other, whilst in C. trisignata they are 

 somewhat separated. The forehead has scarcely any trace of the usual ridge. The 

 middle band of the elytra is interrupted in the centre, but this may be an individual 

 peculiarity, as there is only one specimen before me. The lateral angles of the terminal 

 segment of the abdomen are scarcely prominent (Tab. III. fig. 10 a). 



