NEW AMKUICAN ACAKINA. 213 



tlie tip of al)d()iiuMi ; last Ji)iiit of lej; i a little shorter llian or almost as \oi\ji as 

 the preceding one. The plumose hairs on body are much longer than those of 

 sericeiivi. The second joint of the palpus is bnt little swollen above at base; the 

 third about twice as long as broad ; the fourtli long and tapering to a stout claw, 

 which bears a tooth on its underside; tiie thumb is slightly clavate, the tip is 

 truncate on one side, forming a circular, tlat surface, suiioundeti by hairs; the 

 whole palpus with long hairs. ^ 



Siiliiieville, Ohio [A. i). Macgillivray] ; Fraiiconia, N. li. (Mrs. t^^jAf 



Slosson). 



Troiiil»i«iiiiin ina$>^iiifi<'iliii LeConte, Proc. Awid. Nat. Sci. Phil. 185:5. ^ 

 Ltingth 5.-8. mm. Body pyriform, constricted a little behind the middle, much 

 broader in front, with several circular depressions above. Anterior legs shorter 

 than the body, posterior pair reaching be.vond tip of abdomen. Body and legs 

 thickly clothed with very long plumose hairs, much longer than those of gigan- 

 teitm. Last joint of leg i cylindrical, slightly shorter than the preceding. The 

 second joint of the palpus is long and cylindrical ; tlie third joint short, about 

 as broad as long; the fourth longer and tapering into a long, slender daw! 

 thumb is clavate; the whole palpus with very long fine hair.s, those on the outer- 

 side of the thuiub being much shorter than those on the innerside. 



Texas, New Mexico (?j. 



Troinbidiiiin pucificiaiii nov. sj). — Length 2.2 mu-.. Body pyriform, 

 with a number of circular depressions above, some connected transversely, tip 

 of abdomen emarginate; anterior legs as long as body, posterior pair reaching 

 beyond the tip of the abdomen. Last joint of leg i about equal to the preced- 

 ing, slightly enlarged at tip. Hairs on the body very stout and finely feathered. 

 Second joint of palpus broad, swollen at base, as in scabrum ; third joint short, 

 about as broad as long; fourth joint short, tapering into a (daw, which is nearly 

 as long as the joint; thumb clavate, thickly clothed witli short haiis. 



Olyiupia, Washington State [Trevor Kincaid]. 



We have at least two species of Ottonia which are very distinct: 



Anal opening on dorsum l<>(*ii>it:i I'll ill. 



Anal opening below iiiiiMfai'iiiil. 



Ottonia locuMtarilin Kiley [Trombidinm). 1st Rept. U. S. Ent. Com. 

 Very peculiar in having the anal opening on the dorsum, like the 

 Eupodid genus Notophallns. Dr. Riley's specimens were quite 

 small; a specimen from Poughkeepsie, N. Y. [G. Van Ingen], is 

 5 mm. long. It is known from mi^st of the Eastern States and from 

 Texas and California. 



Ottonia ninscariini Riley ; Trombidiim), 1st Rept. U. S. Ent. Com. 

 I have not seen adults of this species ; I have the young from 

 Washington, D. C, and Sea Cliff, N. Y. Murray seems to think it 

 the same as tiie European 7\ jHinmiicum Latr. The Aearus paro- 



TRANS. AM. ENT. SCO. XXI. JUNK, 1894. 



