ENTOMOLOGICAL SECTION. Vll 



Dr. Horn suggested a modification of the table of Clivina whit-h was 

 originally published by Dr. LeConte in Proc. Acad. 1857, p. 81, and since 

 somewhat changed by the author in Bull. Brooklyn Ent. Soc. ii, p. 32. 



Lateral margin of thorax attaining the basal margin. 



Middle tibiae with a spur on outer side near the tip Species 1-8. 



Middle tibise without spur Species 9-15. 



Lateral margin of thorax not, attaining the base but forming an ante-basal ridge. 



Middle tibiae without spur Species 16-21. 



Species 1-15 have many dorsal punctures, 16-21 two or none. 



Dr. Horn also called attention to the fact that the characters used in 

 the separation of the genera of the group Clivinae seemed to have very 

 little value, and those based on the ligula not strictly true. An iiiiportant 

 difference between Clivina and Dj/schirius seemed to have been entirely 

 overlooked. In the former genus the terminal joint of the maxillary 

 palpi does not differ materially in the sexes, while in the latter that of 

 the male is much more dilated and on the under surface is excavated, 

 the concavity which is sharply defined is membranous and probably 

 sensitive. The two genera are thus distinctly separable, while the ligula 

 and paraglossse do not differ materially in all the genera of Clivintv. 



The gToup Scarites is separated from the Clivinas not only by the form 

 of the antenuiB and mentum. but also in the occurrence of but one supra- 

 orbital setigerous puncture in the former group and two in the latter. 

 A fuller discussion of the genera of both these groups, illustrated with 

 drawings of dissections of the mouth parts, were promised in a UKjre 

 extended paper which would soon be presented for publication. 



Dr. Horn also exhibited two new species of Desmocerus which he 

 briefly characterized as follows : 



D. californicus n. sp. — Black opaque, elytra bluish- or greenish-black, nar- 

 rowly margined at base and sides with orange-red. Head and thorax densely and 

 moderately coarsely punctured, the latter with the surface regular, and with a 

 slight tinge of bluish-green. Elytra densely punctured, the punctures near the 

 base coarse and deep, becoming gradually finer and denser toward the apex, sur- 

 face black opaque and with a bluish, violaceous or greenish tinge, the lateral and 

 basal margins narrowly orange-red, scutellum and a small spot each side black. 

 Body beneath and legs densely and rather finely j^wnetured, the metasternum 

 very finely pubescent. Length .64 % —.80 J inch ; 16—20 mm. 



The male is smaller and more slender than the female, and the elytra 

 gradually narrower to apex ; the five basal joints of the antennae are also 

 stouter and more serrate. 



Collected by Mr. H. K. Morrison during the past year, in the southern 

 part of California. 



