196 ENTOMOLOGICAL NEWS. [September, 



(^. — Genitalia conspicuous, clothed with gray hair. Inferior append- 

 ages elongate, two-jointed ; basal joint stout, twice as long as broad ; 

 second joint swollen at base, tapering to apex, which is rounded and 

 bears on its dorsal surface a group of six or more stout flattened setae. 

 Superior appendages as long as inferior, two-jointed ; basal joint stout, 

 cylindrical ; second joint slender, slightly enlarged basally, curving 

 gently upwards. 



//a^.— Congress Springs, California. 



The above species is described from specimens reared from 

 aquatic larvae by Prof. Vernon ly. Kellogg of Stanford Uni- 

 versity. The immature stages were described by Prof Kellogg 

 in the Entomological News for February, 1901. 



EXPLANATION OF PLATE. 

 Figs. 1-5. — Pericoma ocellaris var. ainericana . 

 Fig. I. — Ventral plate of female. 



" 2. — Basal joints of male antenna. 



" 3. — Basal joints of female antenna. 



" 4. — Male genitalia. 



" 5. — Ovipositor of female. 

 Figs. 6-9. — Pericoma calif ornica. 

 Fig. 6. — Wing of female, denuded of hair. 



" 7. — Male genitalia. 



" 8. — Ventral plate of female. 



" 9. — Basal joints of male antenna. 



Contributions to the Odonata of Maine. — IV. 



By (the late) F. L. Harvey, Orono, Me. 



(Continued from page 178.) 



67. Enallagma geminatam Kellicott. 



Taken in Bradley at Chemo Mills, July 26, 1899, on rocks 

 in swift water. 8 specimens taken, 7 males and i female. 

 One pair in coitu. Our specimens are larger than recorded by 

 Kellicott, the abdomen being about 23 mm. long instead of 

 20 mm. The superior appendages seems to be longer, more 

 slender, and the superior incision deeper, than shown in Kelli- 

 cott' s drawing. The specimens all have lateral black stripes 

 on 8 and 9. The male in coitu has a blue spot and two small 

 blue dots in the distal third of the dorsum of 7. All the other 

 males have 7 entirely black. One specimen showed the blue 



