294 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



Soc, vol. 36, p. 148, 1910) described the Arizona one under the name 

 A^. pluristicta. The one from Matamoras represents a race from the 

 arid eastern area. A fourth race, represented by a single female 

 collected by E. A. Schwarz at Tampico, is from the eastern coastal 

 humid lowlands, and is the most divergent of the group. I am de- 

 scribing this as N. tampicensis. 



Neobrotica pluristicta Fall 



Figure 31 

 Neobrotica pluristicta Fall, Trans. American Ent. Soc, vol. 36, p. 148, 1910. 



About 5.5 mm in length, oblong oval, somewhat shiny, the prothorax 

 with a transverse sulcus, the elytra strongly costate with the intervals 

 geminate striate punctate, pale yellow brown; each elytron has 7 

 spots : one on the humerus, another midway down the side and one 

 at the apical curve, a second line of spots on the disk with the one 

 nearest the apex having a smaller one beside it; the tibiae and tarsi 

 dark, the antennae brown with the basal and terminal three joints 

 usually paler. 



Head with the interocular space a little more than half width of 

 head, vertex densely and rather coarsely punctate, the cheeks on either 

 side of the short carina also punctate, mouthparts edged with brown. 

 Antennae sometimes entkely brownish, but often with the three basal 

 and three terminal joints paler. Prothorax with rounded sides, more 

 or less distinct transverse sulcus, alutaceous, finely punctate, pale 

 yellow. Scutellum pale. Elytra distinctly costate, the intervals being 

 coarsely and striately punctate, not very shiny, yellow brown with 

 four spots across the base, four across the middle and six near the apex. 

 Body beneath pale, the front tibiae dark on the outside, the other 

 tibiae and all tarsi dark. Anterior coxal cavities open, claws appendic- 

 ulate. Length 6-6.5 mm.; width 3.3 mm. 



Type, Fall collection, MCZ, from Baboquivari Mts., Ariz., also 

 collected in Santa Rita Mts., July 12-24, 1915, by Dury; Nogales, 

 St. Cruz Co., collected by F. W. Nunenmacher, April 14, 1906; Penna 

 Blanca, Ariz., collected by Lindsay, July 2, 1944, on Chilopsis linearis. 



Remarks: This species while very much like A^. sexmaculata Jacoby 

 from the Federal District, Mexico, is smaller and not q'uite so coarsely 

 punctate and the elytral costae are a little more distinct. The elytral 

 spots are slightly different too. Whether it is a distinct species or only 

 a geographic race is uncertain. 



Neobrotica tnatamorasensis, new species 



Figure 33 



Between 6.5 and 7 mm. in length, oblong oval, not very shiny, the 



