143 GEO. H. HORN, M. D. 



ate and gradually but slightly narrowed to apex, the latter obtuse, disc feebly 

 convex, sjiarsely and irregularly punctate with a faint tendency to a striate 

 arrangement, sutural stria finely impressed. Body beneath very sparsely punc- 

 tate. Length .20— .22 inch; 5— 5.5 mm, (PI. Ill, fig. 4). 



In addition to the antennal character above given the male diflFers 

 from the female in having the middle tibiae slightly arcuate at tip 

 and also a curious arrangement on the last ventral segment. The 

 latter is as follows : the middle of the segment is deeply concave, 

 from the bottom of the concavity arises a thin plate which has a 

 transverse expansion posteriorly so that its summit forms the letter T, 

 on each side of the concavity a short triangular plate arises which is 

 placed obliquely. The general appearance of this insect is that of a 

 large Phyviapliora. 



Two specimens taken by Mr. H. K. Morrison, in the high Sierras 

 of western Nevada, another was taken by Mr. Crotch. 



Mycetina testacea Lee, has a well defined line parallel with the side 

 margin of the thorax. As the genera are defined it should not be a 

 Mycetina. I would refer it to Coniopoda but the second tarsal joint 

 is said to be subbilobed. A species of Epopterm is said by Chapuis 

 to occur in Texas, but this genus has no basal transverse groove. 

 Both these genera have the marginal and the longitudinal lines well 

 marked. In M. testacea the tenth joint of the antennae is slightly 

 prolonged on the inner side. This prolongation is the principal if not 

 the only character made use of to separate three genera under the 

 group name Upipocites, (Gen. Col. xii, p. 120). From a study of our 

 species this seems entirely insufficient from its inconstancy. 



Here also might be mentioned the genus Ajjhorista Gorham, sepa- 

 rated by the claws being (so said), dentate or subdentate. They 

 certainly do not differ from those of Mycetina vittafa. If it be con- 

 sidered advisable to divide Mycetina the form of the presternum is a 

 far better character, using it as follows : 

 Presternum extremely narrow and depressed between the eoxse, the point 



deflexed and not prolonged, mesosternum very oblique, nearly flat. 



Aphorista. 

 Presternum moderately broad not depressed, the tip prolonged, meeting the 



rather protuberant mesosternum Mycetina, 



By this means the maculate species remain with Mycetina, while 

 morosa, Iseta and vittata are Apliorista, testacea having already been 

 removed, 



PHYMAPIIORA Newm. 



P» califoriiica n. sp. — Oblong, glabrous, shining, piceous, thorax reddish- 

 yellow with median piceous spot, elytra piceous, base broadly rufous and a 

 narrow crescentic band posteriorly of the same color. Head rufous, sparsely 



