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SPHENOPHOKUS. 



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Sent in abundance from 



Mexico and Costa Rica, the long 





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seen: S. monilis is based 



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g the three forms described by Gyllenhal and Chevrolat, whose types I have 



upon reddish opaque examples with the elytral interstices 

 almost flat; 8. glabripes upon a specimen (d) with the coarse punctures on the 

 V-shaped basal depression of the prothorax continued forwards on each side in a 





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in all its varieties by the large, deep, rugosely punctate, sub triangular fovea on the 

 fifth ventral segment in both sexes. It has the rostrum rather slender, slightly 

 compressed, narrowly sulcate at the base, and angularly dilated near the apex beneath ; 

 the prothorax with a V-shaped depressed area at the base, an oblong depression 

 towards the apex, the sides, and often a fovea near the hind angles, very coarsely 

 punctate ; the elytra with rows of oval or rounded fovese placed upon narrow striae ; 

 the tibiae fringed with very short hairs, the anterior pair obliquely truncate at 

 the apex, and all with a very long uncus ; and the third tarsal joint small. The 

 sculpture of the prothorax and elytra is variable. The opaque reddish form 

 (S. monilis) has only been seen from Mexico. S. pontederice, Chittend., from 

 Texas, &c. (two males of which are before me), is very closely related to the present 

 species, but differs from it in the subcylindrical rostrum, which is very feebly angulate 

 at the apex beneath, the much more coarsely punctured under surface, and the 

 shallower depression on the fifth ventral segment. 







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17. Sphenophorus quadrivittatus. (Tab. VIII. figg. 6, 6 a, $ .) 



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Sphenophorus quadrivittatus, Gyll. in Schonh. Gen. Cure. iv. p. 962 l ; Chevr. Ann. Soc. Ent. Fr. 



1885, p. 109 2 . 

 Sphenophorus bicolor, Jekel, in litt. 3 < 



S . Anterior and intermediate femora more or less clothed with erect matted hairs along their lower face ; 

 anterior coxae with a large, and the other coxse with a smaller, tuft of matted hairs ; ventral excavation 

 very long and deep, sparsely, finely punctate, the fifth segment also hollowed down the middle from near 



the base to the apex. 









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2 . Anterior and intermediate femora each with a small pencil of hairs at the base, similar to that on 



the coxee ; fifth ventral segment transversely depressed at the apex. 

 Length 7^9, breadth 2|-3f millim. 



Eab. Mexico 123 (Mm. Brit.; Truqui), Puebla {Salle), Mexico city {Edge). 



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This is one of several similarly coloured Mexican forms. It has the prothorax 

 rufo-quadrivittate (the two narrow dorsal vittse sometimes wanting), with a coarsely 



V-shaped, depressed area at the base ; the elytra coarsely crenate-striate, 



with the interstices flat or feebly convex, faintly uniseriate-punctate, and the alternate 





ones (13 5 7) often more or less infuscate or black ; the apical portion of the 



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pygidium transversely depressed and coarsely punctate on each side of the raised 

 median line • the rostrum moderately stout, and (as seen in profile) angulate at the 





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apex beneath ; and the tibiae fringed with long hairs in both sexes. I have 



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