684 PROCEEDINGS OF THE ACADEMY OF [DeC, 



legs with some clavate hairs near tip of femora, and on the tibia 

 above. 



Length 3 mm.; pedipalpi 3.3 mm. 



From bromeliads at La Emilia, Juan Vinas, and Reventazon 

 Valley, below Juan Viiias, Costa Rica, Oct. and Nov., 1909; March 

 and April, 1910 (Calvert). The pedipalpi are very similar to those 

 of CheUfer canestrinii Balzan. 



SOORPIONIDA. 



Centrurus bicolor Pocock. 



One specimen taken in the office of Philadelphia South Farm 

 (Banana River district), Costa Rica, Nov. 7, 1909 (Calvert). 



Centrurus margaritatus Gerv. 



From Turrucares, August 14 and 15, 1909 (Calvert). 



SOLPUGIDA. 



Ammotrecha stoUi Pocock. 



Atenas Station, Pacific Railroad, one specimen running about in 

 bed at hotel, April 8, 1910, 9 P.M. 



AOARINA. 



Canestrinia blattophaga Banks. 



From Santa Cruz, 21 Jan., 1910 (Calvert), in a vial with various 

 insects, including a large cockroach, Archimandrita marmorata Stoll, 

 identified by Mr. J. A. G. Rehn. 

 Trombidium furcipes n. sp. PI. xxx, fig. 21. 



Red. Body nearly twice as long as broad, broadest at humeri, 

 constricted behind the humeri and again at insertion of third legs; 

 crista metopica (or groove) reaching to abdomen, with a papilla 

 near posterior third; two sessile eyes each side, the inner one much 

 the smaller. Body densely clothed with minute, short, dense fascicles 

 of hair, each arising from -a pit; so close are these as to give the abdo- 

 men a pitted appearance from' above; legs with short, fine hairs, 

 leg I longer than body, leg IV plainly shorter, and all tarsi at end 

 have a long deep slit in which are located the claws, each side of 

 slit the hairs are long and dense, so that seen from the side the tarsi 

 appear abruptly clavate at tip, and from above appear forked; tarsi 

 longer than preceding joint; palpi quite long, with only short hairs, 

 the thumb fusiform and hardly longer than the long claw. 



Length 2 mm. 



From Juan Vinas, Costa Rica, June 23 to 29, 1910 (Calvert). 



