SEBK1C0KNIA. 175 



on the disc of the thorax ; the lower part of the face is generally green. The thorax 

 is evenly convex, with a trace of a longitudinal median impression ; rather strongly 

 punctured, the punctures crowded at the sides, slightly separated on the disc ; the 

 lateral carina is not quite so straight as it is in C. uniformis, and is continued to near 

 the front angles. The elytra are sulcate, with the interstices posteriorly convex, rather 

 strongly punctured, the punctures slightly separated on the disc, but more crowded at 

 the sides. The apex of each elytron has two nearly equal teeth, the sutural one not 

 being produced beyond the outer one. 



5. Cinyra sexspinosa. 



Elongata, parum convexa, omnino senea, crebre punctata ; elytris striatis, interstitiis postice convexis, singulis 



elytris ad apicem trispinosis. 

 Long. 6| lin. 



Hab. Mexico, Acapulco in Guerrero (Ilbge). 



The thorax is rather strongly punctured, the punctures crowded at the sides, slightly 

 separated on the disc ; there is a very slight impression on each side of the base and a 

 shallow elongate fovea in the middle of the base ; the lateral carina does not reach the 

 middle of the side. The elytra are rather deeply striated, the strise punctured ; the 

 interstices are posteriorly somewhat convex, the second and fourth more convex than 

 the others ; the punctures are rather strong, slightly separated on the dorsal interstices, 

 close together on the lateral ones ; each elytron has at the apex three acute teeth, 

 the one at the suture and the one at the end of the second stria equal, the third at the 

 end of the fourth interstice more removed from the apex. The prosternum is rather 

 finely and not very closely punctured. 



ISOPH^NUS. (Tab. IX. figg. 11, 11 a-c.) 

 (To precede the genus Melanophila, p. 16.) 



Elongate, parallel. Mentum very short and transverse, rounded at the sides, membranous anteriorly. Maxil- 

 lary palpi with the apical joint twice as long as broad, subcylindrical. Antennae with the pores in a large 

 cavity at the lower anterior portion of the joints, the cavities more lateral at the apical joints (fig. 11 a). 

 Thorax transverse-quadrate. Scutellum rather small, pentagonal. Elytra narrower in the middle than 

 at the base or apex, leaving the abdomen exposed at the sides, rounded and denticulate at the apex. 

 Prosternal process acuminate at the apex, scarcely widened behind the coxae (fig. 11 b). Sternal cavity 

 formed by the mesosternum (which is rather large) and metasternum ; the posterior margin of the 

 mesosternum, however, is slightly visible. Metathoracic episterna rather broad, somewhat narrowed 

 posteriorly, the epimera triangular, not covered by the elytra. The posterior coxae are gradually wider 

 internally. The legs are slender; the tibiae straight; the tarsi long, slender, the basal joint of the 

 posterior pair as long as the following four joints together, hairy, especially beneath, the second and third 

 joints with a fringe of white hairs at the apex representing the lamina, the fourth joint with a distinct 

 lamina (fig. 11 c). 



I am in doubt as to the affinities of this genus, but on the whole it seems best to 

 place it before Melanojphila. The system of coloration and sculpture is more that of 

 Anthaxia. 



