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APPENDIX. 







sulci very shallow ; the head with pale brown and whitish scales only, the latter condensed into a trans- 

 verse band between the eyes ; the elytral interstices broad, convex, and uneven. 

 Length 4j%, breadth 2§ millim. 



Hab. Mexico (Truqui, in coll. Fry). 



One specimen. Very like G. tolucana, but with the prothorax more convex (the 

 sulci almost obsolete), the vestiture of the upper surface partly whitish, and the 



blackish-brown streaks 





differently 



The coarse seriate punctures 



■Iy 







8. Gerstaeckeria lineatocollis, sp 



(Tab. IX. figg. 18, 18 



Short-ovate, very convex, black, the base of the antennae, the tibiae, and tarsi rufo-piceous or ferruginous, 

 the entire surface very densely punctate ; variegated above with a dense clothing of rather broad, pale 



wn 



the middle of the fourth interstice the most conspicuous), the prothorax with a line of intermixed 

 whitish and pale brown scales down the middle. Prothorax small, transversely convex, rounded at the 

 sides, constricted in front, densely punctate. Elytra at the base a little wider than the prothorax, 

 moderately rounded at the sides ; shallowly striate, the striae with very coarse closely placed punctures, 



the interstices feebly convex. Beneath coarsely, densely punctate ; ventral segments 2-4 subequal in 

 length, the sutures straight. Femora unarmed. 

 Length 4|-, breadth 21 millim. 



Hab. Mexico, " Sierra de Durango " (Hoge, ex Solari). 





















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Narrower and less convex than G. tolucana, the prothorax relatively smaller and 

 with a whitish median line, the elytra less rounded at the sides and with flatter 

 interstices, the second ventral segment very little longer than the third. A single 

 worn specimen only has been seen of this species, but it is so different from its nearest 

 known Mexican allies that there could be no difficulty in identifying the insect. 



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ACALLES (p. 472). 



4 (a). Acalles triseriatus, sp. n. (Tab. IX. figg. 19, 19 a.) 



Subovate, black, the antennae, tip of the rostrum, and tarsi ferruginous ; clothed with a few small, scattered, 

 brown, curled, hair-like scales, the depressions of the surface more or less incrustate. Head and rostrum 

 densely punctate, the latter short, stout, and obsoletely carinate. Prothorax transverse, rounded at the 

 sides, constricted and much narrowed in front, slightly hollowed at the base, shallowly sulcate down the 

 middle ; densely, confluently punctate. Elytra oval, produced at the apex, the humeri obtuse ; coarsely 

 seriato-punctate, the interstices 3, 5, and 7 each with a row of scattered tuberculiform prominences 

 that at the base of each of them cariniform and the one on 3 and 5 at the commencement of the apical 

 declivity oblong, large, and prominent. Ventral segments 3 and 4 short. Legs short; femora and 

 tibiae very stout, the tarsi slender, the intermediate and posterior femora unidentate. 



Length 3|, breadth y 9 ^ millim. 



Hab. Mexico (Truqui, in coll. Fry). 



One specimen. Near A. cinericius, but with a transverse, mesially sulcate 

 confluently punctate prothorax, the tubercles on the elytra differently placed (forming 

 interrupted series on the alternate interstices), the legs very short, the intermediate 

 and posterior femora conspicuously dentate. 





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