324 



PSYCHE. 



[March— April iSgo. 



several black tipped spines and a large 

 movable spur ; tarsi 3-iointed, the basal 

 joint longer than the other two to- 

 gether, all with black tipped spines or 

 teeth at apex ; the anterior and middle 

 tarsi shorter, the terminal joint the long- 

 est, longer than the first two together. 

 Face with three keels, the middle one 

 forked on the frons above ; clypeus 

 also tricarinated, the middle carina deli- 

 cate ; beak, apparently, but two-jointed, 

 reaching far beyond the middle coxae, 

 the first joint being slightly the longer. 

 Prothorax and mesotborax tricarinate, 

 those of the last being delicate or sub- 

 obsolete. Front wings pale gi-eenish- 

 brown, sub-hyaline, the apex of the 

 clavus and veins of apical cells more or 

 less distinctly surrounded by fuliginous 

 clouds, as shown in the figure (c). 

 9 . Length 2^ mm. ; wing expanse 7 

 mm. This sex agrees with the male, 

 except its slightly larger size, the cly- 

 peus as well as the frons and all the 

 coxae are more or less distinctly em- 

 browned or blackish, while the apical 

 edges of the abdominal segments, as 

 well as the lateral edges and a broad 

 dorsal stripe, are yellow. 



The ventral apical aspect of the two 

 sexes is shown in figures e andy" ; the 



head and antennae in figure d. 



The brachypterous form measures 

 3 mm. in length, the abdomen being 

 much broader and more depressed than 

 in the fully winged form. 



The aborted wings, shown in figure 

 ^, are less than 3 mm. in length, with 

 a spot at apex of clavus and two on the 

 apical margin, the venation as in the 

 drawing. 



Parasites. 



The species is subject to the attacks 

 of a dipterous parasite and probably 

 also to hymenopterous parasites be- 

 longing to the subfamily dryininae. A 

 single 9 , unfortunately killed in the 

 cyanide bottle before I discovered the 

 fact or I might have reared it, exhibited 

 peculiar inflated or oval projections 

 issuing from each abdominal spiracle, 

 covered with a dark colored, felt-like 

 skin, which, on dissecting under the 

 microscope, I found each to be the re- 

 cepticle of a puparium of a dipteron 

 closely allied to, if not, a Cecido7nyia. 



Another year's observations will prob- 

 ably enable me to rear this parasite and 

 settle definitely to what family it be- 

 longs and it is only mentioned at this 

 time as an interesting fact in its life 

 historv well worth v of record. 



