Mar. i8j9 I FaLL : On AMERICAN SpECIES OF ACM/EODERA. 15 



A. coquiltetti, sp. nov. 



Elongate, rather slender, scarcely depressed, black, strongly bronzed, clothed 

 with rather long erect hairs, which on the upper surface are brownish throughout 

 except for an intermixture of cinereous on the thorax. Elytra with three more or less 

 transverse lateral spots, the anterior median in position and largest, the two others 

 reddish externally ; there is also occasionally a very small yellow subhumeral spot. 

 Head densely punctate with a more or less evident vertical carina. Thorax not twice 

 as wide as long, widest at base, sides feebly arcuate, moderately narrowed anteriorly ; 

 disk rather sparsely, sides closely punctate ; lateral margin visible from above only in 

 front. Elytra as wide as the base of the thorax, striae not impressed on the disk, in- 

 tervals flat, finely uniseriately punctate. Body beneath rather sparsely punctate, not 

 much more closely at sides, sparsely clothed with moderately long grayish hair. Pro- 

 sternum rather strongly sinuate in front ; last ventral with rather thick apical plate 

 which is narrowly rounded or subangulate posteriorly. Length, 7.5-8 mm., .30-. 32 

 inch. 



Habitat : California (Los Angeles county). 



Described from a series of seven specimens taken by Mr. Coquillett, 

 whose name I am pleased to use for the species. 

 A. miliaris Horn, Trans, Am. Ent. Soc, VII, p. lo, PI. I, Fig. 9. 



This and the following species are very closely allied, and the 

 characters given for their separation in Horn's table are not reliable; 

 in fact, the much more common sparsa has circulated extensively as 

 miliaris and doubtless stands as such in many collections. There is, 

 however, little doubt that the species are distinct, and the best dis- 

 tinguishing character is the form of the elytra as given in the table. 

 In addition it may be said that the spots are more numerous in miliaris, 

 the abdomen is more strongly punctate, the prosternal cusp is less 

 strong, and the lateral impressions of the thorax are inclined to be less 

 developed anteriorly. The apical plate is moderately thin and sub- 

 acutely rounded in both miliaris and sparsa. Length, 8-10.5 I'firn., 

 .32— .42 inch. 



Habitat : I have seen only some seven or eight examples, all from 

 Texas. 

 A. sparsa Horn, Trans. Am. Ent. Soc, VII, p. 11, PI. I, Fig. 10. 



For comparison with miliaris see remarks under that species. The 

 type specimens came from Colorado and are rather more sparsely 

 punctate and less spotted than those from New Mexico and Arizona. 

 These latter area pparently venusta Waterh., judging from the figure in 

 the Biologia. The apical marginal spots are more or less red as in 

 miliaris, though not so mentioned by Horn in his description. Length, 

 ^•5-12.3 mm., .34-.49 inch. 



