92 Journal New York Entomological Society. [vol. vi 



SPHINDID^E. 

 This family forms a very good transition to the Cryptophagidae. 

 The antennae are of a more perfectly clavicorn type than in Cioidae, 

 and have a large compact club, with the ninth joint variable in size. 

 The mentum is very large, in striking contrast to the Cioidse, where it 

 is unusually minute. The maxillary palpi are small, slender and pointed 

 and the anterior coxae rather widely separated. The clypeus is con- 

 vex, continuous with the front, narrowed and continued over the larger 

 part of the mandibles, the labrum being small, almost atrophied in 

 Odontosphindus, the epistomal suture fine and posteriorly arcuate. 

 The eyes are large, convex and coarsely faceted. The two genera before 

 me may be distinguished as follows : — 



Tarsi heteromerous ; antennae n-jointed, the ninth joint wider than the eighth, but 

 very short, the club virtually 2 jointed, large and nearly c)lindr.c ; prothorax den- 

 ticulate at the sides, the elytra with impressed series of coarse punctures ; body 



glabrous Odontosphindus 



Tarsi pentamerous ; antennae 10-jointed, the club variable, 2 or 3-jointed ; prothorax 

 not denticulate, the elytra with unimpressed series of fine punctures ; body 



sparsely pubescent Sphindus 



Another genus, Eurysphindus, has been described by LeConte, but 

 I have seen no example ; the inferior flanks of the prothorax are said 

 to be deeply concave and the body clothed with erect hair. 



Odontosphindus Lee. 

 These species are much larger than those of Sphindus and are 

 distinguishable at once by the characters of the table ; the two species 

 are as follows : — 



Sides of the prothorax scarcely at all reflexed, finely margined. Atlantic regions. 



denticollis Lee. 



S.des of the prothorax distinctly though not very broadly explanato-reflexed, more 

 strongly and quite irregularly denticulate. Body subparallel, moderately convex, 

 pale rufo-testaceous in color, shining though somewhat alutaceous in lustre ; head 

 moderate in size, the epistoma polished and impunctate ; eyes moderately large, 

 convex ; antennas as long as the width of the head, the first joint large, the sec- 

 ond more slender, contorted at base as usual ; prothorax quite transverse, parallel, 

 the sides feebly arcuate ; punctures rather coarse and close set ; elytra only just 

 visibly wider than the prothorax, three- fourths longer than wide, the serial punc- 

 tures obsolete toward tip. Length 3.0-3.5 mm.; width 1.25 mm. California 

 (Sonoma Co. ) clavicornis, sp. nov. 



Clavieomis is materially larger than denticollis, and has a larger, 

 more transverse and more coarsely punctured prothorax. 



