454 Coleopterological Notices, V. 



Elytra as long as the head and prothorax, one-half wider than the latter and 

 fully as long as wide, the sutural stria deep and entire, the discal short, the 

 outer terminating at basal fourth, the inner at basal two-fifths. Abdomen about 

 as wide as the elytra and scarcely as long ; border broad, one-fourth as wide 

 as the disk. Ventral segments two to four decreasing almost imperceptibly 

 in length ; hind cox* contiguous, the abdominal process short and acutely 

 triangular. Length 1.5 mm. ; width 0.45 mm. 



California (Los Angeles Co.). 



The unique specimen has no striking sexual modifications, and is 

 apparently a female. 



ACOLOXIA n. gen. 



The form in this genus is shorter and more convex than in 

 Euplectus and the eyes are larger. The infraocular channel be- 

 comes narrowed anteriorly and communicates with the antennal 

 excavation. The prosternum is long, not carinate, the first three 

 dorsal segments equal, the first two each with two long strong 

 divergent carinse, the fourth much longer than the preceding. 

 First ventral extending beyond the coxae; two to five rapidly de- 

 creasing in length. Male with the large convex rhomboidal and 

 carinate ventral pygidium of Euplectus. Legs rather short and 

 stout, the tarsi short and compressed, the third joint of the poste- 

 rior rather longer than the second ; claw long, arcuate, with a very 

 minute internal basal appendage. The pronotum has no discal im- 

 pression, and each elytron has at base two pairs of deep foveae. 

 Our species has been described under the name Euplectus cavi- 

 collis Lee. 



EIJPI.ECTUS Leach. 



The somewhat numerous species within our boundaries agree 

 satisfactorily with the European, but are probably more hetero- 

 geneous. Among those in my cabinet three subgeneric groups are 

 readily observable : — 



Head not quite so large, sometimes very slightly narrower than the prothorax, 

 with two larger widely distant fovese situated behind the middle, the inter- 

 mediate surface of the vertex strongly convex ; body less slender, more 



convex I 



Head larger, flatter above, frequently much larger than the prothorax, with 

 two smaller, more anterior and much more approximate fovese ; body 

 smaller, narrower and more depressed. 



